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Paradyne 3551 Network Card User Manual

1. Date Location Local Phone No Device Local Addr DBM Installed Serial No Tributary Network Addr TDM Flex Installed Menu Value Diagnostic General Value External DBU Value Full Mode Enab Disab Position Cnirl Trib ExtBU Ansr Orig None LinkConfig Pt Pt M Pt Rate Kbps 64 56 38 4 28 8 19 2 14 4 9 6 4 8 2 4 Resp Period 1 2 10 TxClkSource DCE Prt1 Prt2 Trib Tim Out Chang min sec 5 sec to 10 min DSU Value Link Delay Os 1s 2s 5s 10s 20s 50s Rate Kbps 64L 56 38 4 19 2 9 6 4 8 2 4 PrtSp Kb 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab B a o rtSp Kbps 00 46 19 2 9 0 4 0 2 4 1 2 Disa M Pt SymPrt Enab Disab TxClkSource Int Ext Prt1 Prt2 DDS General Value Msg Clamp Enab Disab DTE Port 32 V 35 TxElasStor Enab Disab RTS Cntrl FrcOn DTE RxElasStor Enab Disab CTS Cntrl Std RTS Delay FrcOn 19 2 PowrLvl 6 0 10 Ais an rarer ntistream an t V 54 Lpbk Enab Disab sana Whee nies DBM Value LSD Lead STD Delay FrcOn Rate Kbps 14 4 12 0 9 6 4 8 2 4 DSR FrcOn Enab Disab PrtSp Kbps 14 4 12 0 9 6 4 8 1 2 Disab SystemStat Enab Disab TxClkSource Int RXC Ext Prti Prt2 DSU DSR on Tst Enab Disab Diagnostic DSU Value CarrLossDisc Yes No Circ Assur Enab Disab Diag Type NonD Disr Mixed None Auto Retrain Yes No RespondRDL Enab Disab 2nd Ch bps 100 400 800 1200 1600 Singl
2. 4 12 ete a oe ee ose 5 E es Ae es be ee ees 4 12 Selecting an Application Coniguration 64 2dou bese cade een ee bons 6 REE ERED 4 13 Ba niran ege o cla 5 ees oo hah oes Se hee ee 4 14 3 01 a DSU POr oe a cad bas 8a tbe SERS eee he hod Ree eee ROTERE 4 14 Reconfiguring a TDM Flex Port 6 5 9 4 14 8 6 052 25 4 15 Ole ie tie POLLE oe ot beste 4 15 Ce ie cae nee oe ere 9 5 4 15 Pai DE rol LI os one aed 2 eee Oe 4 16 E e a oo a eed oh T Se ek ee Oe ho ee eee ees 4 17 Entering a Telephone Number 2 242 sun che dme do ere bead wes eb ke bu wee 8 edute hsi 4 17 EG bee oe eh a bt 0 be bse eee eee ees 4 18 EO oo a Bs as eens 33 4 18 P a es ee eee E i oe ese nee ee E 4 18 3550 A2 GB 20 20 December 1996 4 1 COMSPHERE 3550 Series Data Service Units Control Branch 4 8 8 80 1 1 0 111 94 18 het SET
3. 5 2 Configuration Option Tables 20 6 44 lt 2649 4eeeneGeeseeeededes 5 5 A 17 111 6 c 0acrenenaaveast 1 B Configuration Worksheets 59 8 25 5 8 9 86 8 9 66 8 1 1 C Status Indicators and Control Panel Messages C 1 1 Pim Assisnments coca ose aee ee nunka ee Ge ema de shad D 1 E Application Configurations E 1 F Eigen List e irren ear a NES aE E F 1 i December 1996 3550 A2 GB20 20 Table of Contents List of Figures Figure Page 2 1 Model 3550 Hardware Switch Location shown without a TDM Flex 2 3 2 2 Model 3550 Electrical Connection 8 9 9 6 8 6 96 8 8 88 6 86 8 6 98 2 4 2 3 Model 3550 DSU NMS Connection 2 6 2 4 Model 3550 DSU Dial PSTN Network Connection 2 6 2 5 Model 3550 DSU DDS LADS Network Connection 2 7 220 Addr ssing Example 4 2 i62te eens yGeneedoesade dhadagh eset bebedae 2 9 2 Wie IES 1699399879 8 a aa Aa Seed baad ons eo eears 2 10 3 1 Model 3551 DSU Switch and Jumper Locations 0 020000 3 3 3 2 COMSPHERE 3000 Series Carrier Rear 3 5 3 3 Model 3551 DSU Installation and Circuit Pack 1 0 3 6 3 4 M
4. Indicates an illegal value NOTES Input leads A and B Off when voltage on lead is less than 8V ON when voltage on lead is more than 2 2V Output leads are either ON or Off When output is set to Off 12V is applied to lead When output is set to ON 12V is applied to lead Reporting External Lead Changes to NMS To receive messages Changing either the output leads or the input leads gt Procedure changes the DSU s health and status message 1 Press the F3 key Msgs If the DSU is polled by the 6700 Series NMS the NMS reports a change configuration notification CCN event 2 Select Read F1 The NMS operator can then issue a CCN Display 3 Ifthe message is less than 16 characters in length command to determine what caused the event the entire message is displayed e Ifthe CCN event was caused by a change in the If the message is greater than 16 characters press external leads select Displ F1 to see the current the c key to scroll additional lines of the states of the leads message onto the screen e Ifa positive voltage is detected in either one of the input leads an external leads alarm is also To clear delete messages reported 2 Procedure 1 Press the F3 key Msgs Messages Branch The Messages Msgs branch of the top level menu allows the DSU to receive messages from the NMS It only appears when there is a message waiting Both control and tr
5. Redun Pwr Alarm Indicates a problem with the power on the 48 Vdc Central Office Power Unit Subnetwrk Alarm A major alarm was set Off by one of the devices in your subnetwork Check the Subnetwork Health and Status report Sub normal Speed The DSU is operating at a dial backup speed that is less than the DDS network speed Subtree Truncat Downstream health and status information has been truncated because it overflowed system limits OutofFrameThresh For DSUs operating on a single port rate adaption or nondisruptive TDM the local DSU has detected a continuous MUX Out of Frame condition The alarm clears when a local DSU synchronizes with a remote DSU On a point to point circuit if the alarm continues and the local DSU is configured for automatic backup the local DSU disruptively tests the DDS circuit If the test fails the local DSU initiates a DDS Facility Alarm and initiates dial backup nn n DDS Indicates the speed nn n of the active core DSU or DBM when there are no alarms 3550 A2 GB20 20 December 1996 C 5 COMSPHERE 3550 Series Data Service Units Table C 4 Expanded Health and Status Messages Message Condition Dial Attempt nn The number nn of failures of dialing attempts since failure of private line service This message is cleared when the automatic backup process succeeds or the backup process is reset due to configuration option changes When the maxi
6. 3550 A2 GB20 20 Installing the Model 3551 DSU Each DSU can be configured to use either interface EIA 232 or V 35 independent of other DSUs in the carrier Connection of the DSU to the DTE is a matter of selecting and installing the appropriate cable Refer to the COMSPHERE 3000 Series Carrier Installation Manual for installation procedures Appendix E provides connectivity diagrams should you need further assistance in connecting the DSU to the network Addressing the Unit A unique address must be assigned to each control and tributary DSU in your network You can assign an address within the range of 1 through 255 NOTE Do not assign the number 192 as a network address This number is reserved as a broadcast address If a DBM is installed it requires a separate address which is automatically assigned by the DSU The address assigned a DBM 15 the DSU s address plus 1 e g if the DSU s address is 1 the assigned DBM address will be 2 NOTE The numbers 191 and 255 cannot be assigned to a DSU that has a DBM However addresses can be assigned in any order they do not have to be sequential It is recommended that only odd numbered addresses be assigned to DSUs so that even numbered addresses are reserved for DBMs your network does not currently include DBMs you retain the flexibility to add them later without having to reconfigure your entire network December 1996 3 9 COMSPHERE 3550 S
7. 40S 8G6e bh ade aieas C 2 C 3 Device Health and Status Messages 422s 6 0544 86 7 8 8 8 544405464 Hashana C 3 C 4 Expanded Health and Status Messages C 6 C 5 Subnetwork Health and Status Messages 042606 0444400 949 699 4666644 C 7 C 6 Command Progress Messages 22 244 44644426 650686404b00400 Feds C 8 C 7 Dial Backup Progress Messages 6c ccd ct tet bbosdbaaedaiGedeehedn ce 2 C 8 C 8 Command Error Messages 24425644445 6564584 4444554440 d ddd bod ve 8 C 9 C 9 Dial Backup Error Messages 2c Seated eisandetiaddedsa tebe C 10 C 10 TDM Flex Error Messages 2 5 2 8 9 eee eee ees C 11 D 1 Model 3550 Digital DDS Network Connector Pin Assignments D 2 D 2 Model 3550 Dial Analog Network Connector Pin Assignments D 2 D 3 3600 Hubbing Device Pin Assignments D 3 D 4 3600 Hubbing Device CC IN DC OUT Jack Pin Assignments D 3 D 5 ETA 232 V 24 Connector Pin Assignments D 5 D 6 V 35 Connector Pin Assignments coos os ecw eteseetctse cs set act ovecaeede es D 7 3550 A2 GB20 20 December 1996 v Preface About This Guide This user s guide provides the information needed to install and operate your Model 3550 or 3551 data service unit DSU which may or may not be equipped with a dial backup module DBM or time division multiplexer TDM If
8. Ansr Select for the external DBU to answer an incoming dial backup call Orig Select for the external DBU to originate dial backup Only when the external DBU is set to Orig will the Backup option set be available The external DBU must be set for Dial on DTR None Select to disable the external DBU This is the default setting Rate Kbps 9 6 Next 64 56 38 4 28 8 19 2 14 4 9 6 4 8 2 4 1 2 Disab Prev Backup Rate for the External Dial Unit DBU 64to Select the data rate to match the external DBU s port speed 1 2 kbps TxClkSource DCE Next DCE Prt Prt2 Prev Transmit Clock Source Specifies the transmit timing source for the external DBU DCE Select if clock is provided by the external DBU Prti or Select the port that timing is to be taken from using the selected port s external Transmit Prt2 Timing lead Prt2 is only displayed if a TDM Flex is installed and enabled 5 16 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 8 1 of 4 General Configuration Options DTE Port EIA232 Next EIA232 V 35 Prev DTE Port not displayed when a TDM Flex is installed and enabled Selects the active DTE interface EIA232 Select when using the EIA 232 interface connector EIA232 operation is recommended for speeds 19 2 kbps or below Operation at speeds up to 56 kbps is dependent upon cable length cable quality and the local environment Select when using the V 35 interface connect
9. E December 1996 3550 A2 GB20 20 3550 A2 GB20 20 Table of Contents Preface About TUS 19110 2565024 25584 i bow ee ederdi inea Vil Howto Use This Ging gc 5o0 05d dbo cbR esta ee 5 ba os vil Related DOCU x 46 6 65 46 5 66 5666S 966 Vill 1 6644 65 6654 5043 66 OEE SESE vili 1 About Your DSU OON 22 ot boeken n e E R ee eee 1 1 5 1 17 14818 1 11 2 eos aes 1 1 81 1 1510 18 1011 anh 86577 7 1 2 Upgrades Available 501 0 9 9 5 99 6 9 86 6 9 reima 1 3 Technical 5 1 1111 171115 5 5 2 8 9 9 9 1 3 Equipment Warranty and Support 5 1 8 2 Installing the Model 3550 DSU RPO Bee cues eet oa 2 1 Before You Beil isc ers c tat ee 6 96 6 2 1 How to Change Hardware 5 8885 2 2 Where to Pisce te DSU cove vccsecepeescetmagesuawetsatesnas 2 4 eilor ne DSU na accessed eee EEEE RTE EEES ates 2 4 onnectine to he NelWOrK 6 lt lt ssovscee coisa dueeeseada 2 5 Addressing the UMT ss 25 262 se het Eek s eG eee eee 2 8 Connecine the DSW 6 11711 51 50 5 8 dae sade evdawes 2 10 Verifying Operation and Te
10. The following shows an example of the top level menu for a standalone Model 3550 DSU that is configured as a control operating at 9 6 kbps with an NMS message waiting Port DSU 9 6 Local Remot Msg aj rjlelle The following information is displayed Line I Source of the information being displayed DSU s current function or mode In this example the unit is operating as a DSU not as a DBM or TDM Flex DSU s data rate DSU s network designation Here the DSU is a control If this display was for a Model 3551 a carrier mounted DSU the carrier nest or rack and slot numbers would appear instead of Port e g Carrier 2 and Slot 16 would appear as 2 16 Line 2 Menu selections one appearing directly over each function key F1 and F2 Continued on Page A 4 December 1996 1 COMSPHERE 3550 Series Data Service Units TOP LEVEL MENU Local Address Read Clear HS CircQ ID TPwr DSU and ExtBU DBM Port Select Abort Devic Lobk DT EE BERT Lamp Start Start Start Devic Expan Subn Sib S lective Port Port Select Select ExtBU DBM Address Address Installed or External DBU Run Blocks Tim ExtBU DrBU LO DE A Displ Clr Port Port Port Select Select Select Address idie Mode Standby Mode Dial Backup Mode Bkup Dial DrBU gt DDS l Dial l Dial Idle Standby Backup Mode Mode Mode l
11. messages Table C 6 Command Progress Messages Message Condition Please wait Command is taking more than 2 seconds to complete Command Complete Command has been completed Command Failed Command was unable to be executed Table C 7 Dial Backup Progress Messages Message Condition DBM Answering DBM is answering an incoming call DBM Callback Callback sequence has initiated DBM Connected DBM is connected DBM Disabled No calls can be initiated or answered DBM Ringing Ringing at remote DBM or external DBU dial backup unit DBM Standby A connection is made but the digital circuit is still the active link DBM Starting Up The DBM is training for synchronization DBM WaitForAnswr A call has been placed and the DBM is waiting for connection DBM Wait Callock The DBM is expecting a call back from remote DBM or external DBU DBM XXXXXXXXXXX The last 11 digits for the telephone number that has been dialed ExtBU Active Data has been routed to the ExtBU external DBU ExtBU Inact ExtBU is enabled but the external DBU is not active C 8 December 1996 3550 A2 GB20 20 Status Indicators and Control Panel Messages Error Messages Table C 8 describes the command error messages Table C 9 describes the dial backup error messages and Table C 10 describes the TDM Flex error messages Table C 8 Command Error
12. s TxCarrSel is set to Cntrl Pav PIET Or RTS Cntrl must be set 10 DTE When a port s TxCarrSel is set to Const RTS Cntrl must be set to FrcOn C 12 December 1996 3550 A2 GB20 20 Table C 10 3 of 3 TDM Flex Error Messages Status Indicators and Control Panel Messages Message Condition Action Sync gt Async Req The port s asynchronous rate setting requires that more capacity bandwidth be allocated to the port Asynchronous rates of 150 300 600 and 1200 bps require the allocation of 1200 bps Exception At a line speed of 56 kbps asynchronous rates 150 300 600 and 1200 bps require the allocation of 2400 bps Asynchronous rate of 1800 bps requires the allocation of 2400 bps For all other available asynchronous rates the asynchronous rate equals the synchronous rate Allocate more capacity bandwidth to the port that is set the port rate to a higher speed via the PrtSp submenu Sync Port Requir The sum of the TDM Flex port speeds equals the DSU DBM rate and all ports are configured for asynchronous operation Correct the problem in one of two ways 1 Increase the DSU s DBM s or ExtBU s data rate 2 Decrease the DSU DBM or ExtBU port speeds and the Async rate via the PrtSp submenu Undersp Required The sum of the TDM Flex port speeds equals the DSU DBM or ExtBU rate and at least one port is configured for synchronous op
13. 103 104 105 106 107 108 109 DIAL 496 14462 01 Figure 4 1 Model 3550 Diagnostic Control Panel 4 2 December 1996 3550 A2 GB20 20 Operating the DSU CARRIER SLOTS 1 16 M E Ie Ig 1 1 sot A B Ox Aam Baup si ea Fi Fe F3 9 21 COMSPHERE 3000 SELECT KY LCD DISPLAY KEY STATUS INDICATORS OK Alarm BckUp Test ST CG Oo O JA TEST MODE NETWORK ERROR DEVICE CORRECTION DIAL BACKUP ALARM DIAL TEST BACKUP MODE DTE STATUS INDICATORS SDCP INDICATOR Figure 4 2 SDCP and Both control panels have a 2 line 16 character liquid crystal display LCD and a keypad through which you can e Monitor the unit s health and status e Initiate dial backup Initiate diagnostic tests Load or change the unit s configuration or how it will operate Enable or disable the DSU s DBM s or port s transmitter Display or change the status of the general purpose external DTE leads 496 14463 01 Model 3551 DSU Faceplate The DCP s LCD displays the result of any command initiated from the DCP Refer to Appendix C to understand the meaning of DCP status indicators Keypad There are seven keys on the DCP of the standalone Model 3550 and eight on the SDCP for the carrier mounted Model 3551 DSU The additional key the Select key connects the SDCP to a specific DSU located in a specific carrier and slot within
14. F1 A Abort You can stop the process and keep the poll list as it has been generated by selecting Abort Acquir Poll List Command Complete E la e le Otherwise all tributary addresses have been acquired 3550 A2 GB20 20 Directory The DSU s dial backup Directory Dir can store up to ten telephone numbers dial strings so the DBM can call other DBMs or modems Directory entries are numbered from 1 to 10 Each dial string in the directory can be up to 36 characters in length Refer to Table 4 6 for numbers and characters that can be used When the dial string or changes are complete enter an underscore _ to the immediate right of the last character this ends the dial string field NOTE Do not load duplicate telephone numbers into the Directory telephone numbers should be unique Entering a Telephone Number For the following example we will add a dial string telephone number to Backup Directory 1 The number to be entered 15 555 1234 To add or change a telephone number 2 Procedure 1 3550 A2 GB20 20 Select Local Press the gt key to display Confg Configuration branch Select Confg Select Dir if entering a telephone number into the Backup Directory Press the gt key to display then select Phone if entering the local DSU s telephone number This telephone number is entered similarly to entering a number into Dir
15. LCD LDM LEC LED link level address Local Loopback LSD Glossary 4 COMSPHERE 3550 Series Data Service Units A performance measurement reported during Digital Test or Transmit Test Pattern that is defined as a second in which at least one error has been detected A failure condition reported to the 6700 Series NMS when there is a break in communication with one or more tributary Retraining of a V 32 DBM at a lower rate or speed Federal Communications Commission Board of commissioners that regulates all interstate and foreign electrical communication systems that originate from the United States A communications computer associated with a host computer that manages the lines and routing of data through the network it is the data terminal equipment DTE at the control DSU A circuit in a DSU or in external test equipment that produces a continuous string or stream of known data patterns InterExchange Carrier A company that provides inter LATA local exchange carrier telecommunication services like AT amp T MCI and Sprint Access to these services can be provided through DDS dedicated channels T1 5 dedicated access channel or digital switched access DSA channels Local Area Data Set also called a limited distance modem or LDM This refers to a mode of operation where the control and tributary DSUs are directly connected but not passing through a DDS network A test to verify that all status indic
16. MPTT areas are read only storage areas configuration option changes cannot be saved to these areas 3550 A2 GB20 20 e The factory loaded configuration option sets for a point to point control DSU are contained in the PTPC area e The factory loaded configuration option sets for a point to point tributary DSU are contained in the PTPT area e The factory loaded configuration option sets for a multipoint control DSU are contained in the MPTC area e The factory loaded configuration option set for a multipoint tributary DSU are contained in the MPTT area NOTE Load the appropriate option set PTPC PTPT MPTC or MPTT when installing or upgrading the DSU Selecting Activ Usrl PTPC PTPT MPTC or MPTT from the Load from screen brings a complete set of configuration options into the DSU s working buffer These configuration options are grouped by their function These groupings are referred to as option sets Each of these option sets or groupings control a specific aspect of the DSU s operation December 1996 5 1 COMSPHERE 3550 Series Data Service Units Once loaded the following Edit Save submenu appears Edit Save SAVE DSU DBM Press the lt 1 or key to scroll the following configuration option sets into view DSU Diagnostic DSU DBM External DBU and General DBM External DBU General Backup MUX Copy Setup and Ports and Port Speed DSU D
17. None No call setup security is required Dial Backup Operation None is the default The Model 3550 or 3551 DSU with dial backup capability can provide backup for a point to point circuit operating at 14 4 kbps or below Appendix E shows some typical dial backup system configurations Password Originating and receiving DBMs exchange passwords before the DBMs can enter Standby mode There must be an incoming password RxPwd and an outgoing Backup is controlled primarily by software password TxPwd set up configuration options in the DBM or ExtBU and Backup Callback Both DBMs must exchange option sets The unit can be configured so that backup can be either automatic or manual Backup can be controlled from either the DSU s control panel or a 6700 Series NMS passwords and a Backup Directory pointer must be sent before a call can be initiated There must be an incoming password RxPwd and an outgoing password TxPwd set up and the originator s local telephone number Phone subbranch must be stored in the answering DBM s Backup Directory Backup begins with configuring the unit Configuring the Unit for Dial Backup Alarm No security is to be used at the control DBM and the DBM only answers The follow1 figurati ti hould be set as ee T incoming calls when there is a facility alarm whether initiating backup manually or automatically If the control DSU is to initiate the call set
18. Press the gt key to display Prt2 13 Select Prt2 14 Select V 35 15 Press the A key twice to return to the Edit Save screen 3550 A2 GB20 20 16 Select SAVE F1 17 Save to Activ F1 Command Complete appears to confirm that the configuration is saved Poll List The Poll List PList subbranch maintains or changes the DSU s poll list A control DSU s poll list includes all tributary DSUs and DBMs one level downstream You can display clear change or acquire a poll list If you select Clr Clear from the Poll List screen all network addresses are erased from the DSU s poll list PList is only available from the Local branch and only to a DSU configured for nondisruptive and mixed diagnostics Diag Type is set to NonD or Mixed Displaying the Poll List To display each of the network addresses included in the DSU s poll list 2 Procedure 1 Select PList F2 2 Select Displ F1 The following screen appears Addr 2 Active w e e e amp The number after Addr in this example 2 is the network address of the poll list member The member is identified as either Active or Skip identified via the Change Poll List function 3 Press the F1 or F2 key to display additional addresses 4 Press the A key to return to the Poll List screen 3550 A2 GB20 20 Operating the DSU Changing the Poll List To change the poll list e g add network address 3 C7 P
19. frequency 1 7 front panel DBM test initiator C 3 DSU test initiator port test initiator security Status indicator Index ID identity descriptions report Idle mode Illegal Char DBM error message C 10 impedence inbound Incmpt Diag mode error message C 11 indicators status install DSU 2 4 Model 3550 2 1 interconnect cable V 35 3 7 interface DDS network 1 6 diagnostic DTE 1 4 receive VE 1 7 switched network transmit VE V 35 DTE Full Menu Mode internal lead states C 2 disabled 4 Inval lowest Prt error message C 11 enabled 2 Inval Selection No Valid Choices error message Full Mode 4 12 Invalid Address message Invalid timing error message general J configuration options 5 17 jumper technical specifications straps government requirements D switch locations modular circuit card 3 3 hardware apa keypad 4 3 2 2 changing health and status 4 4 device expanded indicator LADS connection distances table 2 8 IC 3 network connection expanded operation anen LADS network connection figure subnetwork Lamp 4 12 heat dissipation ee DSU Lamp Test Lamp Tes 5 1211 17 power up 3 8 LDM see LADS 3550 A2 GB20 20 December 1996 Index 5 COMSPHERE 3550 Series Data Service Units leads external changing displaying ea changes to NMS 4 20 States
20. sensitive components from damage due to electrostatic discharge ESD during normal operation When performing installation procedures however take proper static control precautions to prevent damage to equipment If you are not sure of the proper static control precautions contact your nearest sales or service representative The Model 3550 DSU has a switch located behind its diagnostic control panel DCP This switch contains two straps one that controls the permissive or programmable connection when a DBM 1s installed and one that controls the frame to signal grounds Table 2 1 shows the DSU s settings Refer to Figure 2 1 and the following steps if you need to change one of these straps 2 Procedure 1 With your thumbs under the edge of the front bezel firmly press upward to lift the bezel from the tabs securing it in place 2 Swing the front bezel up and set the bezel aside 3 Refer to Table 2 1 to determine which switch needs to be changed Then using a small instrument carefully change the position of the switch 4 Reinsert the front bezel s hinge tabs into position and swing the bezel down Snap the bezel back into place 3550 A2 GB20 20 Installing the Model 3550 DSU FRONT BEZEL SWITCH 1 HINGE LOCAT 496 14457 01 Figure 2 1 Model 3550 Hardware Switch Location shown without a TDM Flex Table 2 1 Model 3550 DSU Switch Settings Switch Position Switch S
21. 20 Configuring the Unit Table 5 10 MUX Setup Configuration Options MUX Funct Disab for MPTC Enab for all other configurations Next Enab Disab Prev TDM Flex Function Enables or disables the TDM Flex Enab Select when you want to enable the TDM Flex and perform multiplexing Disab Select when you want to disable the TDM Flex Share DevA Enab MPTT Disab for all other configurations Next Enab Disab Prev Sharing Device A Enabling this configuration option allows you to create a digital sharing group The following rules apply e All ports in a group must have the same port speed e All ports must be adjacent e A digital sharing group can have 2 ports Enab Select to enable the digital sharing feature Disab Select to disable the digital sharing feature Port Cntrl DSD for MPTT Host for all other configurations Next Host DSD Prev Port Control Specifies how to handle contention between the ports in a digital sharing group Host Select if the Host protocol must enforce the order of transmission to avoid collisions DSD Select for Digital Sharing Device if selection of the next port to transmit is based upon the lowest numbered port that is ready to transmit Table 5 11 1 of 5 MUX Port Configuration Options DTE Port EIA232 Next EIA232 V 35 Prev DTE Port Selects the port data will be transmitted over EIA232 Select when using the EIA 232 interface connector V 35 Select when
22. 232 Cable straight connection 10 835 4507 1011 V 35 Crossover Cable 15 835 1092 0011 Model 3551 Digital DDS Network Cables 50 pin to eight 6 pin Multiple Network Interface Adapter 1 5 035 0258 0231 Model 3551 in Canada 50 pin to eight 8 pin Multiple Network Interface Adapter 1 5 035 0256 0231 Model 3551 in U S A Model 3551 Dial PSTN Network Cable Adapter 50 pin to eight 6 pin RJ11C Permissive Cable 1 5 035 0255 0231 50 pin to eight 8 pin RU45S Programmable Cable 1 5 035 0257 0231 COMSPHERE 3000 Series Carrier Installation Manual 3000 A2 GA31 COMSPHERE 48 Vdc Central Office Power Unit Installation Manual 3000 A2 GB41 COMSPHERE 3550 Series Data Service Units Models 3550 and 3551 3550 A2 GB20 User s Guide 1 These cables are extended using a 035 0254 1031 3031 cable For use by Field Service personnel F 4 December 1996 3550 A2 GB20 20 active core Advanced Diagnostic protocol ADp auto backup auto restoral backup Bilateral Loopback Bit Error Rate Test BERT broadcast buffer callback directory pointer carrier carrier mounted 3550 A2 GB20 20 Glossary The core that is transmitting data For example the DBM is the active core when the unit is in Backup mode The network management protocol used by the COMSPHERE 6700 Series NMS It provides diagnostic communication for the network A function of the dial backup module DBM a
23. 3551 DSU that is designed for installation in a COMSPHERE 3000 Series Carrier used at central site operations December 1996 Glossary 1 CCITT clamping CMI collision control Control Channel CC core CSA CTS Data Communications Equipment DCE data router Data Service Unit DSU Data Terminal Equipment DTE DBM DDS dedicated backup Glossary 2 COMSPHERE 3550 Series Data Service Units The International Consultative Committee for Telegraphy and Telephony a committee of the International Telecommunication Union ITU A function of the DSU that forces the output signal to go low Off and causes the DSU to ignore input signals Control Mode Idle A control signal sent over the DDS line to indicate that no data activity is being sent A collision occurs when two tributary DSUs transmit data onto the network at the same time The transmissions interfere with each other and neither is successfully received A DSU or modem that is for diagnostic purposes at the logical head of a hierarchical network It is the unit from which tests and commands are issued to other units on the same circuit There is only one control per link The diagnostic interface between the 6700 Series NMS and the SDU for a Model 3551 DSU and the Hubbing Device for the Model 3550 A function of the circuit card that provides data transmission capability With Model 3550 or Model 3551 DSUs there are two cores one
24. Asynchronous to Synchronous Conversion only displayed with no TDM Flex installed Sets Port 1 of the DSU for asynchronous or synchronous operation Enab Select to configure the DSU as asynchronous An asynchronous to synchronous conversion takes place Disab Select to configure the DSU as synchronous AsyncBit Char 8 Next 6 7 8 9 10 Prev Asynchronous Bits per Character only displayed with no TDM Flex installed Specifies the length of a character including the parity bit but excluding the start and stop bits This configuration option only applies when Async gt Sync is enabled 6to10 Select the number of asynchronous bits per character When Stop Bits is set to 2 10 will not be displayed Stop Bits 1 Next 1 2 Prev Stop Bits only displayed with no TDM Flex installed Specifies the number of stop bits in an asynchronous character This configuration option only applies when Async Sync is enabled 1to2 Select the number of stop bits to be used When the AsyncBit Char configuration option is set to 10 2 will not be displayed Overspeed 2 3 Next 1 0 2 3 Prev Overspeed only displayed with no TDM Flex installed Selects the overspeed range of the asynchronous to synchronous converter This configuration option only applies when Async Sync is enabled 1 0 Select the basic overspeed range Basic range provides 1 0 overspeed in the DTE asynchronous data rate 2 3 Select the overspeed perce
25. DSU DIAGNOSTIC INTERFACE 3550 DSU 3551 DSU NETWORK COMPATIBILITY AT amp T Technical Reference 62310 1967 Integrated Network Corporation Compatibility Bulletin CB INC 101 and Pacific Bell publications PUB L 780035 PB NB and PUB L 780036 PB NB DSU COMPATIBILITY Primary Channel 1 6 Full or half duplex data transmission via point to point or multipoint DDS network or local area data channel Leased or private 4 wire DDS line 2 4 4 8 9 6 19 2 38 4 and 56 kbps 2 4 4 8 9 6 19 2 38 4 56 and 64 kbps 64 kbps 11 bps 56 kops 9 bps 38 4 kbps 4 bps 19 2 kbps 5 bps 9 6 kbps 1 bps 4 8 kbps 0 bps 2 4 kbps 0 bps 8 pin modular jack USOC RJ48S One or two 50 pin connector USOC RJ48T Requires 3600 Series Hubbing Device which provides two 8 pin modular jacks Via the SDU in the COMSPHERE 3000 Series Carrier 2 4 4 8 9 6 and 56 kbps 19 2 kbps loop at levels of 6 0 or 10 dBm All Paradyne digital products and other products that are compliant with AT amp T Technical Reference 62310 1987 December 1996 3550 A2 GB20 20 About Your DSU Table 1 3 V 32 DBM Technical Specifications Specifications RINGER EQUIVALENCE NUMBER REN DBM option 0 7B APPLICATION Full or half duplex data transmission via analog 2 wire dial network MODULATION AND FREQUENCY point to point At 14 4 and 12 kbps CCITT V 32bis 1800 Hz At 4 8 and 9 6 kbps CCITT V 32 1800 Hz At 2 4 kbp
26. Directory indicator 4 Select another teleph ber to call ee E E Manual Dial Backup Termination 9 Press the F1 key T to increment the directory indicator e g 1 to 2 e Ifin Standby mode select Disc 9 Press the F2 key 4 to decrement the indicator Ifin Dial Backup mode select DrBU e g 2 to 1 e Ifin External Backup mode select DrBU 48 December 1996s 35 0 2082 20 Test Branch The Test branch provides extensive testing capabilities for the DSU the DDS circuit the DBM if installed and the backup circuit When the tributary DSU receives a test request from the control DSU it aborts any locally initiated test in progress Running a test can affect your application data or may cause your application session to be dropped depending upon front end processor time out parameters etc since no data or acknowledgment messages will be transmitted while the test is in progress Abort The Abort selection allows you to abort a test that is running The DSU cannot run any other test until the test in progress is aborted There are two types of selections to abort a test e Selective terminates whatever test is in progress at the local DSU e Subn Subnetwork only displays at the control DSU This selection terminates any test running at the control DSU or at a tributary DSU or DBM associated with the control After selecting either Selective or Subn the test is terminated and the DCP displays t
27. MPTT configuration Select when configured for point to point nondisruptive diagnostics or point to point rate adaption V 13 Signaling is turned Off Dial Test Disab Next Enab Disab Prev Dial Tone Test only displayed when Full Mode is enabled When enabled the DBM periodically checks for a signal or dial tone If the test fails the DSU reports a Dial Test Failure alarm in its health and status reports A Dial Test occurs once every 60 minutes until a failure occurs Then the test repeats every minute until the network recovers Enab Select to perform a Dial Tone testing Disab Set to Disable if the DBM is not to perform Dial Tone testing DTRCallCon Disab Next Ansr Disab Prev Data Terminal Ready Call Control only displayed when Full Mode is enabled DIT RCallCon uses the state of the DTR lead to control backup when contact with the remote DSU is lost Ansr Select answer when the DTR lead is used for incoming calls The DBM answers a backup call from the remote DBM when DTR is raised It drops the call when DTR goes low or will not answer an incoming call if DTR is low Select to disable DTR Call Control the state of the DTR lead is ignored 3550 A2 GB 20 20 December 1996 5 15 COMSPHERE 3550 Series Data Service Units Table 5 7 External DBU Configuration Options ExtBU None Next Ansr Orig None Prev External Backup Unit This feature allows dial backup for a DSU using an external dial backup unit DBU
28. Select Chang F1 to add or change a telephone number The Enter Dir screen appears Press the F1 key 1 to increment the Directory entry indicator the default is 1 For this example assume that you are entering your first directory entry Select Load F2 December 1996 Operating the DSU The Directory entry appears on the first line the cursor 15 positioned in the first position of the currently empty Directory fay vj le If the number had been entered previously that number would appear on the first line following the colon For numeric screens the following applies Press the F1 key T to increment the digit Press the F2 key 4 to decrement the digit Press the lt 1 or keys to move the blinking cursor one position to the left or right Press the F3 key Undo to restore the number as it was first displayed so you can start over Refer to Table 4 6 to see all available directory and password entry characters Press the F1 key until the number 5 appears Press the gt key to move to the next position Repeat the process until all numbers in the telephone number have been entered 1 5551234 ___ 4 Undo w NOTE A dial string cannot have any separating characters or spaces i e 555 1234 or 555 1234 Other valid characters can be interspersed as needed t p w and comma 4 17 COMSPHERE 3550 Series Da
29. Specifications 2 1 Model 3550 DSU Switch Settings 2 2 LADS Connection Distances 3 1 Model 3551 DSU Switch Settings 3 2 Model 3551 DSU Jumper Straps 4 1 Identity Descriptions 4 2 Backup Branch Menu Selections 4 3 Digital Test Results 4 4 End to End Test Results 4 5 Bit Error Rate Test Results 4 6 Directory Entry and Password Characters A 7 ee ee 3 5 1 DSU Configuration Options 5 2 Diagnostic DSU Configuration Options 5 3 Diagnostic DBM Configuration Options 5 4 Diagnostic External DBU Configuration Options 5 5 Diagnostic General Configuration Options 5 6 DBM Configuration Options 5 7 External DBU Configuration Options 5 8 General Configuration Options 5 9 Backup Configuration Options 5 10 MUX Setup Configuration Options 5 11 MUX Port Configuration Options 5 12 Port Speed DSU Configuration Options 5 13 Port Speed DBM Configuration Options 5 14 Port Speed External DBU Configuration Options iv December 1996 3550 A2 GB20 20 Table of Contents Table Page 1 DSUStats I bbc eens cenheetd thoew dade a C 2 C2 SDCP Sr Micas esascs
30. Worksheets summarizes the unit s configuration options for each Menu mode selection gt Procedure 1 Select Local F1 for the local DSU 2 Press the gt key until Confg Configuration branch is displayed 3 Select the function key directly below Opts F3 4 Press the lt I key to display Menu 5 Select Menu F1 Full Mode appears on the first line of the LCD 3550 A2 GB20 20 6 Select the mode e Enable Full Mode F2 All configuration options will be displayed e Disable Full Mode F3 Only those configuration options likely to change will be displayed When the selection is made it is displayed on the first line of the LCD e g Full Mode Disab 7 Select Save F1 8 Press the A key to return to the Configure submenu 9 Select Opts F2 and view the difference in the configuration options displayed based upon the current Menu mode Selecting an Application Configuration The DSU is shipped from the factory with four 4 Operating the DSU NOTE By referencing the menu in Appendix A you will see that pressing the lt key is more efficient if the unit is to operate on a multipoint circuit Make your selection PTPC PTPT MPTC or MPTT and press the function key F1 F2 or F3 directly below the desired configuration The Edit Save screen appears To view the point to point or multipoint configuration loaded 2 Procedure common appli
31. a Disc gt Dial l idle Dial Mode Backup Mode 494 14451a A 2 December 1996 3550 A2 GB20 20 ABBREVIATIONS Switch to DDS Path Switch to Dial Path Acquire Backup Bit Error Rate Test Circuit Quality Clear Configure Control Device Test Diagnostic Directory Disconnect Digital Loopback Drop Backup Display Digital Test DTE Loopback End to End Test External Dial Backup Unit External Leads Device Health Status Identity Monitor Port Local Loopback Loopback Multipoint Control Multipoint Tributary Messages Configuration Options Poll List Port Speed DSU Menu Point to Point Control Point to Point Tributary Remote Mode Remote Loopback Status Terminal Power Transmitter Control for TDM Flex for DBM Opts PList Dir Phone Addr Menu Disp Clr Chang Acq Load Save Enab Disab Execute Load Save Chang Clr Activ Delet Skip Load Save be Execute A y Undo TxCtl LEDs ExtL Disp Chang Activ Remt Usr1 PTPT MPTT TPC MPTC Port Select Address Activ Usr1 Enab Disab Load Save Port Select SAVE DSU Diag DBM ExtBU Gen Bkup MUX PrtSp DSU ExtBU Gen DSU DBM ExtBU Activ Remt Usr1 Copy Setup Prti Prt2 Address Activ Usr1 Copy Copy ENADE OSAN From To 494 14451b Prti Prt2 All Prti Pri2 3550 A2 GB20 20 December 1996 COMSPHERE 3550 Series Data Service Units Continued from Page A 1 Press a function key to select one of the following branches Local branch R
32. an interface between the DSU s 25 pin D type connector and the DTE cable s V 35 connector 32 to 122 F 0 to 50 C 4 to 158 F 20 to 70 C 5 95 noncondensing Withstands normal shipping and handling December 1996 3550 A2 GB20 20 About Your DSU Table 1 1 2 of 2 General Technical Specifications Specifications Criteria HEAT DISSIPATION MAX AT 115 VAC 3550 DSU 22 16 Btu hr 3550 DSU with DBM 29 00 Btu hr 3550 DSU with 2 Port TDM Flex 29 21 Btu hr 3551 DSU 22 16 Btu hr 3551 DSU with DBM 27 30 Btu hr 3000 Series Carrier 16 DSUs with DBMs 563 00 Btu hr plus SDU and fan module PORT RATES Async or Sync rates 64 56 48 19 2 14 4 12 0 9 6 4 8 2 4 and 1 2 kbps Other asynchronous rates e g 150 300 600 and 1800 bps can be obtained through oversampling Asynchronous rates support CCITT V 14 extended rate range at 8 to 12 bits per character including the start and stop bit 2 3 2 5 percent overspeed underspeed compensation at 10 bits per character NMS COMPATIBILITY COMSPHERE 6700 Series NMS Release 4 0 or greater 3550 A2 GB20 20 December 1996 1 5 COMSPHERE 3550 Series Data Service Units Table 1 2 DSU Technical Specifications APPLICATION COMMUNICATION LINE DATA RATES Digital Services DDS ASDS LADS When timing is external provided by the DTE the DTE s clock must be within these ranges DDS NETWORK INTERFACE 3550 DSU 3551
33. configuration using both a carrier mounted Model 3551 DSU and a standalone Model 3550 DSU configured as controls These units have the PTPC configuration The standalone DSU shows both a DBM and a TDM Flex installed the carrier mounted DSUs are equipped with DBMs On the tributary side of the configurations a Model 3550 DSU is paired with a 3800 Series modem for backup Other tributaries each equipped with a DBM and TDM Flex are shown one is paired with a carrier mounted DSU and the other is paired with another standalone DSU Refer to your 6700 Series NMS documentation before connecting the NMS to the circuit December 1996 E 1 COMSPHERE 3550 Series Data Service Units CONTROLS 3000 SERIES CARRIER CC IN SDU CC OUT ADAPTER 002 0025 0031 3551 DSU 3600 HUBBING DEVICE 3600 F 3 300 870 1669 5000 TRIBUTARIES M6BJ S DIAL NETWORK TDM 3550 DSU PRIMARY DATA gt gt gt NONDISRUPTIVE DIAGNOSTICS 494 1 4460 Figure E 1 Point to Point Application Configurations with Internal and External V 32 Backup E 2 December 1996 3550 A2 GB20 20 Application Configurations M u Iti po nt Appl ication S Using this application backup is provided via modems rather than a DBM In this case a matrix switch at the Model 3550 and Model 3551 DSUs also provide control site switches data from the FEP ports to the high speed multipoint
34. for the DSU and one for the DBM and the data can be transmitted through either also see active core Canadian Standards Association The state of the Clear to Send lead A device such as a DSU or modem that provides an interface between a DTE device and a digital or dial analog network also called data circuit terminating equipment A sophisticated circuit switch in the DSU that is capable of connecting several communication interfaces in more than one way redirecting or routing data to an alternate path A DCE device that interprets interfaces and provides timing and signal control between a DTE device and a digital network A computer or peripheral device such as a terminal or printer a data source or sink The V 32 dial backup module that can be ordered for the DSU This module operates at 14 4 kbps and provides an alternate data path in case of failure of the digital connection through the dial network Digital Data Service such as the ACCUNET Spectrum of Digital Services that provides digital not dial communication circuits A dial backup module DBM assigned to a particular DSU that is continually available for service restoration The DBM switches to Dial Backup mode automatically when the DDS line fails no switching is required An external dial backup unit DBU can also provide dedicated backup December 1996 3550 A2 GB20 20 Device Test Devic Diagnostic Control Panel DCP Dial Backup Unit DB
35. label the circuit breaker that protects the ac wall outlet and make sure that it is set to ON Then proceed with the installation 2 Procedure 1 Place the DSU in its planned location Make sure the ventilation slots are not blocked At the rear of the DSU Figure 2 2 insert the ac transformer circular plug into the interface labeled POWER Plug the ac transformer s 3 prong plug into the ac wall outlet CAUTION Only use the power transformer designed for the Model 3550 DSU Using other transformers may result in personal injury or damage to the equipment ElA 232 D V 24 INTERFACE V 35 INTERFACE NMS JACK DBM JACK DDS JACK 494 14455 Figure 2 2 Model 3550 Electrical Connection December 1996 3550 A2 GB20 20 Power Up Routine When power is applied the DSU Determines what options DBM or TDM Flex are installed if any Runs a Device Test on itself and each of the installed options During the tests all indicators on the DCP light briefly and the message Power Up Tests appears on the liquid crystal display LCD Displays the results of each test momentarily as Pass Fail or Abrt Abrt indicates that the Device Test was aborted because a network loopback was in progress during the power up procedure These tests take about 20 seconds to complete If a TDM Flex is installed MUX is displayed as Pass or Fail If the DSU DBM or TDM Flex MUX fails this test fo
36. of the Model 3551 DSU or on the DCP of the Model 3550 DSU External Leads The External Leads ExtL selection allows you to display the state of four general purpose leads on the EJA 232 D V 24 Port 1 interface Pins 12 and 13 for output control leads and Pins 19 and 23 for input alarm leads When the configuration option Ext Leads External Leads is set to ExtLd you can change the state of the two output leads from the DCP or a 6700 Series NMS When CCN by EL CCN by External Leads is enabled the control DSU reports changes in the four leads to the 6700 Series NMS as part of its health and status poll response Table 4 7 describes the meaning of the state of each input or output lead Displaying External Leads The Display Displ selection allows you to view the external lead states When Display is selected the External Leads status report appears showing the current status of the general purpose external leads on the EJA 232 D V 24 interface Changing External Leads The Change Chang selection allows you to change the state of the two output leads for example to change a lead to signal a console operator or to reset a remote computer Leads can be changed from the NMS After the leads are set press the F2 key to save the leads in the specified state December 1996 4 19 COMSPHERE 3550 Series Data Service Units Table 4 7 Lead States Co F ON above text line t Changing
37. operation you can order an ACCULINK 3100 Series CSU wall mount adapter if you want to mount the DSU on a wall an equipment shelf a 19 inch RS 310 C or 23 inch AT amp T DATAPHONE equipment cabinet Refer to Appendix F to order the adapter Before You Begin Your installation site should be clean well lighted well ventilated and free from environmental extremes A dedicated grounded ac outlet that is protected by a circuit breaker should be installed within 6 feet of the DSU s planned location The outlet should be capable of supplying 90 to 132 Vac 60 Hz U S and Canada The December 1996 2 1 COMSPHERE 3550 Series Data Service Units circuit must be capable of supplying a minimum of 2 amperes at 115 Vac Refer to the Technical Specifications section in Chapter for additional power requirements CAUTION The ac transformer contains a 3 wire grounding type plug which has a grounding pin This is a safety feature Do not defeat the purpose of the grounding plug by modifying it or by using an adapter Prior to installation use an outlet tester to check the ac receptacle for earth ground If the power source does not provide a ground connection consult an electrician to determine another method of grounding the DSU before proceeding with the installation Before connecting the DSU you need to contact the telephone company to coordinate your installation before connecting the DSU to their network The DSU c
38. status 4 5 streaming 5 17 MUX port configurations DTE Port 5 17 5 23 DTR Alarm 2 Discon failure_message C message Status indicator DBM error message Index 4 DTR Alarm 5 20 DTRCallCon dynamic range EC status indicator SDCP editing configuration options 5 2 E E DBM test DSU test pe k11 EJA 232 D crossover cable figure EJA 232 V 24 connector pin assignments D 5 Elast Store 5 26 elastic store per port 1 3 electrical connection figure 2 4 emissions CSA end to end test results 4 11 environment equipment support 1 8 warranty 1 8 error correction indicator SDCP error messages command dial backup TDM Flex Exp C 6 Expan 4 41 expanded health and status 4 5 messages Ext Leads 19 Ext Time undspd error message 5 16 ExtBU Agg Exceed error message External Alarm A message Alarm B message Bkup speed C3 external backup mode dial backup 2 leads 4 19 external DBU configuration options diagnostic configuration options 5 10 option set 4 7 port speed configuration options cA ExternBU message ExtL ExtLd message C 7 3550 A2 GB20 20 Fac Alarm FacAlOnCMI faceplate Model 3611 Facil message Facility Alarm Fail message FCC feature number F I features optional 1 2 standard 1 FP DBM test initiator C 3 DSU test initiator port test initiator
39. than 3V or greater than 3V for both the EIA 232 and V 35 interfaces The second line displays On if power is detected The second line displays Off if no power is detected December 1996 4 5 COMSPHERE 3550 Series Data Service Units Table 4 1 Identity Descriptions Description Information Displayed 3550 or 3551 Unit serial number DSU SW ver Software firmware version residing on DSU Netwrk Addr Unit s network address DSU Rate Value set for DSU Rate Kbps configuration option DBM Rate Value set for DBM Rate Kbps configuration option the DBM s aggregate speed It only appears when a V 32 DBM is installed MUX Card 2Prt Type of TDM Flex installed It only appears when a TDM Flex is installed TDM or None Currently configured application refer to the MUX Setup option set It only appears when a TDM Flex is installed MUX SW ver Software firmware version residing on TDM Flex It only appears when a TDM Flex is installed Backup Branch DBM Option Set The Backup Bekup branch controls dial backup e AutoAnswer Select Enab operation This branch appears when a DBM 1s installed When enabled this option set allows the DBM to or when the DSU is configured to support an external dial answer an incoming call Enab is the backup unit DBU The following sections explain dial factory loaded default setting backup operation e Call Setup Set call setup security level
40. the appropriate function key F1 or F2 4 Select Save F3 December 1996 4 21 Configuring the Unit OVON OW as 6 eta oa oo Oe ote oe Using the DCP to Set Configuration Options Editing Configuration Values Saving Configuration Options Example Usme Me DCP 2242205544 car dele ers Configuration Option Tables 2 lt s s442i lt e4 e444 Understanding the Tables 6 9 4 9 9 28 xs Overview After the DSU has been installed and any necessary hardware switches or jumpers have been set the software configuration options must be set Configuration options are set via the DCP by accessing the Configuration Confg branch of the menu refer to the menu tree in Appendix A There are seven configuration storage areas within the DSU e The active area Activ contains the configuration options currently being used by the DSU e The remote area Remt allows a selected DSU s configuration options to be retrieved Once retrieved they can be edited and or saved back to the selected DSU another DSU or the local DSU Activ and 75 are the remote configuration option sets that can be retrieved e The user 1 area Usr1 is a customer defined set of stored configuration options By predetermining and storing a frequently used configuration the stored option set can be loaded quickly as operating requirements change NOTE The PTPC PTPT MPTC and
41. the carrier 3550 A2 GB20 20 December 1996 4 3 COMSPHERE 3550 Series Data Service Units al B B 0 lel le e The key returns you to the top level menu and terminates any work in progress e The 4 key returns you to the previous display one level up from the current display It can also be used to terminate a data entry display without making a change e The lt and keys scroll menus or other displays to the left or right respectively On status and test result displays the and keys scroll additional information into view On data entry displays these keys move the cursor one character to the left or right to allow entry of one digit or character at a time e Function keys F1 F2 or F3 select the item displayed directly above the key Additional information on operating the DSU s keypad can be found in the procedures used to install and verify operation of the DSU in Chapters 2 and 3 the procedure for editing configuration options in Chapter 5 and the various procedures scattered throughout this chapter Menu Structure The menu is your map through the DSU s various functions The following sections describe each branch and subbranch and provide procedures for operating certain features Appendix A shows the complete menu and describes the DSU s branches and subbranches The menu is also included on the handy Reference Card that comes with this guide Top Level Men
42. using the V 35 interface connector a V 35 Interconnect Cable must be used on Port 2 Async Sync Disab Next Enab Disab Prev Asynchronous to Synchronous Conversion Sets the port for asynchronous or synchronous operation Option Verification When the TDM Flex is enabled the DSU verifies that the sum of the port speeds equals the aggregate speed The asynchronous setting cannot be specified as underspeed Enab Select to configure the port as asynchronous asynchronous to synchronous conversion takes place Disab Select to configure the port as synchronous The menu paths for Prtl and Prt2 are identical 3550 A2 GB20 20 December 1996 5 23 COMSPHERE 3550 Series Data Service Units Table 5 11 2 of 5 MUX Port Configuration Options Async Rate Sync Next Sync 1800 1200 600 300 150 Prev Asynchronous Rate Specifies the rate of an asynchronous port The asynchronous rate must be ess than or equal to the synchronous data rate of the port Set the synchronous data rate for a port via the Port Speed PrtSp configuration submenu This configuration option is displayed only if Async Sync is enabled Option Verification When 1800 bps is selected the DSU verifies that the synchronous port speed is 2400 bps or greater If only one stop bit is used the asynchronous rate cannot be equal to half the synchronous rate Sync Select for the asynchronous rate to be the same as the synchronous rate 1800 _ Sel
43. your DSU is not equipped with these options skip the information that pertains to them Be sure to read the safety and regulatory information at the beginning of this guide It is assumed that you are familiar with the functional operation of digital data communications equipment How to Use This Guide This guide provides basic information about your DSU how to install it and verify that it is installed and operating correctly how to operate the unit and its options and how to configure it Two installation chapters are provided one for the Model 3550 DSU and one for the Model 3551 DSU Select the chapter that applies to your DSU Refer to the following chapters or appendices as needed Chapter I Provides a general overview of the DSU and its options information about equipment upgrades and conversions and the unit s technical specifications It also includes equipment warranty information and equipment return instructions Chapter 2 Provides step by step instructions for installing your standalone Model 3550 DSU Chapter 3 Provides step by step instructions for installing your carrier mounted Model 3551 DSU Chapter 4 Describes how to operate your DSU and its DBM and TDM Flex options Chapter 5 Presents the basics of setting and changing configuration options and provides Configuration Option Set Tables which describe each configuration option in an option set along with its possible settings Appendi
44. 0 1600 100 400 800 1200 1600 100 400 800 1200 1600 100 400 800 1200 1600 5 8 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 3 Diagnostic DBM Configuration Options Diag Type Disr Next NonD Disr Mixed None Prev Diagnostic Type This configuration option defines the diagnostic interaction between control and tributary DSUs that are in backup All DSUs on the same circuit should be set the same e g if the control is set to NonD all its tributaries should also be set to NonD NonD Select nondisruptive diagnostics for diagnostic data to be transmitted between the control and the tributary DSUs over a separate diagnostic channel Disr Select disruptive diagnostics for diagnostic data to be carried between the control and the tributary DSUs over the same primary channel as user transmitted data User initiated commands are sent between the control and the tributary DSUs disruptively interrupting data Select if operating over a multipoint network This setting supports nondisruptive health and status updates but user initiated commands are sent between the control and the tributary DSUs disruptively interrupting data Select none if only local diagnostics are to be allowed that is there will be no diagnostic communications with remote devices 2nd Ch bps 400 Next 100 400 800 1200 1600 Prev In band Secondary Channel Diagnostic Transport Speed in bps only displayed when Diag Type is set to
45. 1 RL Remote Digital Loopback RL 231 CH Data Signal Rate Selector DTE Source alternate external control alarm Lead I Transmitter Signal Element Timing DTE Source Hl Data Signal Rate Selector function is not available at this time These leads can be used for the External Lead functions 3550 A2 GB 20 20 December 1996 D 5 COMSPHERE 3550 Series Data Service Units 25 PIN PLUG CONNECTOR Figure D 4 D 6 34 PIN SOCKET CONNECTOR 493 13679 01 V 35 Interconnect Cable 3000 F1 510 December 1996 3550 A2 GB20 20 Pin Assignments Table D 6 V 35 Connector Pin Assignments 34 Pin Connector V 35 Interconnect 25 Pin Connector Rear Connector Plate Circuit Name Pin Number Signal Ground B D Clear to Send CTS E Data Set Ready DSR 1 0 9 lt 2 24 11 PS Transmit Data TXD 23 22 Received Data RXD 16 3 Receiver Signal Element Timing DCE Source 10 Negative DC Test Voltage NO a AJ N 3550 A2 GB20 20 December 1996 D 7 COMSPHERE 3550 Series Data Service Units 19 F203 PT PIN 14 PIN 1 PIN 4 1 po PIN 14 PIN 13 PIN 25 PIN 25 PIN 13 CHASSIS GND TXD RXD RTS NC DSR SIG GND MR LSD NC NC NC on ot NOT USED NOT USED NC NC NC NC NC PURPLE BROWN NC NC NC NC 492 1 2868 01 Figure D 5 EIA 232 D Crossover Cabl
46. 11C plug e Programmable service telephone cord with 8 pin RJ45S plug 2 Plug the other end of the cable into the modular jack provided by the telephone company USOC RJ11C permissive or USOC RJ45S programmable 3 If your site has programmable service verify that the DSU s hardware strap S1 1 is switched to the OFF position DIAL NETWORK CONNECTION VOLTAGE AC POWER IN OR RJ45S WALL JACK 494 1 4579 Figure 2 4 Model 3550 DSU Dial PSTN Network Connection 3550 A2 GB20 20 Connecting to the DDS or LADS Network NOTE Before connecting the DSU to the DDS network ensure that approved primary protectors have been installed on the circuit in accordance with Article 800 of the National Electric Code NFPA 70 in the United States and Section 60 of the Canadian Electric Code Part 1 in Canada Refer to Figure 2 5 as you follow these steps 2 Procedure 1 Plug the DDS network interface cable into the DSU jack labeled LINE e U S select either end of the cable 9 Canada select the 8 pin end 2 Plug the other end of the cable into the modular jack USOC RJ48S provided by the circuit provider If the remote DSU 15 also connected to the network the DSU s green OK indicator lights and the Alrm indicator goes off The Health and Status screen no longer displays a No Signal message 3550 A2 GB20 20 Installing the Model 3550 DSU If connecting the DSU to a LADS netw
47. 3 1 1 ge ot eae hohe eee hd 0 6 5326 95 69 0 9 9 999 5 6 03 9 9 5 3 2 How to Change Hardware SApS 5 96 6 0 8 3 2 Instalim Pe DSU ci toeeteneedate ee bbe tad ies ss 3 5 re eo oh oh te a E ee oe ee Rae OUP Ons eRe 3 8 Rom ee Ce CEE ce be E oe a Alas eee bE Ee ee hen ee 3 8 8 61018 5 2 6 eee eee ee eee ees 3 8 to the Dial or PSTN Network iii 5 3 edt bos he 8 SHEE SORES 3 8 Connecting to the DDS or LADS Network 2 edad sce we ade he db aoe eee 3 9 Connecine Me DSU toaDIE peck ci ce bats de tenet lbawedhdub dt ber 3 9 PCN Me UNE a ie o r od 05 ooh beeches asses 3 9 71 1 OS Aree oe Saas awe on ese bee cede be eee eee Ca eee 3 10 Verifying Operation and Teste Connections 5 tached eeew dawn nw 116 ede oe ee 3 10 To Comet he SOC DSU e ieee ews trt ene eee ace es 1 oe E 3 11 Verifying Network Addresses the Network and DBM Operation 3 11 OS TG bo eet hee bn e
48. 35 PB NB Pacific Bell PUB L 780036 PB NB OvervieW 9 99 9 9 9 8 Standard Features lt 664424 20566545424 205505 Optional Features cscs caus WE saeed ede eet eee ieee ee Port VON PIGS 5 doin odsxveecw ee Uperades Available ee sc 2 6 Technical Specifications cc dc beak awe Equipment Warranty and Support Overview The Model 3550 or 3551 data service unit DSU supports communication between computers and other data processing devices by providing connections to digital data service DDS transmission facilities Both point to point and multipoint configurations are supported The following sections describe the standard features of the DSU as well as the features of the options that may have been ordered with your unit The technical specifications of the DSU and its orderable options are near the end of the chapter Standard Features The Model 3550 or 3551 DSU offers the following features e Miultispeed operation The DSU operates at data rates of 2 4 4 8 9 6 19 2 38 4 and 56 kbps full duplex over the digital data service DDS network Two DTE connectors interfaces are provided for Port 1 EIA 232 D and V 35 Use the EIA 232 D connector for data rates up to and including 19 2 kbps use the V 35 connector for higher rates About Your DSU e Rate Adaption With this feature the DSU can adapt
49. 4 56 48 28 8 19 2 14 4 9 6 4 8 2 4 1 2 Disab Underspeed Disab Prt1 Prt2 Model 3550 or 3551 DSU Configuration Worksheet 1 of 2 Full Menu Mode Disabled Date Location Local Phone No Device Local Addr DBM Installed Serial No Tributary Network Addr TDM Flex Installed Menu Value External DBU Value Backup Value Full Mode Enab Disab ExtBU Ansr Orig None Auto Bckup Enab Disab Rate Kbps 64 56 38 4 28 8 19 2 14 4 9 6 4 8 2 4 Backup Dir Chang 1 10 TxClkSource DCE Prt1 Prt2 AutoRestor Enab Disab DSU Value Rate Kbps 64L 56 38 4 19 2 9 6 4 8 2 4 PrtSp Kbps 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab TxClkSource Int Ext DDS Prt1 Prt2 SAL KANG Dial String DTE Port 5 232 V 35 y RTS Cntr FrcOn DTE CTS Cntrl Std RTS Delay FrcOn 2 Diagnostic DSU Value Async Sync Enab Disab 2 Diag Type NonD Disr Mixed None AsyncBit Char 6 7 8 9 10 3 Stop Bits 1 2 2 6 Diagnostic DBM Value Overspeed 10 23 Diag Type NonD Disr Mixed None 8 9 Diagnostic 10 External DBU Value DBM Value Diag Typ Dist None Rate Kbps 14 4 12 0 9 6 4 8 2 4 PrtSp Kbps 14 4 12 0 9 6 4 8 1 2 Disab TxClkSource Int RXC Ext Prti P
50. 44 4 6 Und rstanding peta Modes 6 ress ee pe Cees Fe FERS RG 1 eb Sees 4 7 8161 nk he wee Sh ee Reed beers Eee ane how eae Bee hee oo ED 4 8 Pincmie a Cry Call ct what ede habeas baa heed eee eee cee 4 8 Manual DDS eet oe op bbe es cok hee Ree eee KES 4 8 Manual Dial Backup Termination o 0d64s coms dea dadedde se bbe 4 8 TEE oe toh os oe eee os 6h coos 6 a owe 595 555 505 4 9 PINE beeen bet oe es A E a hs E A ort ee ee ee ee ea oe ate E 4 9 e a a cae ee ee ee ee ee ee ee ie ee ee eee 4 9 Baia n el e wie ees es Sw ee ee bee ee ee ee aes 4 9 Aa 2 oh eo E he eee ee ea ben eee be baw tee oe 4 9 A oe She wee E E E Gene J 8 4 10 Distal Loopback 9 29 27 SORE RAE eee tees 4 10 Remo ye fae eee bade ee ee base 4 10 Ae ty cee da cane ene 6 ee eo Se ed oe eee Be ee oe ee 4 10 er Te os tae he et eae da ea ced Reka eee woke Rel oes oa he 4 10 1101 4 nos oe a eke ae 8 ee ee ee he Od 2 eee a eee 4 11 Te et PON et oon ches he Sedo tees 4 11 ROM Te oreari eee ta a a neous 2 12 2222 4 12 Cre I go bos eo he hd eee EAEE bed
51. 4K A TDM Flex port is configured for a synchronous rate of 1200 bps and the DSU rate is set to 56 kbps Correct the problem in one of two ways 1 Increase the speed of the port to at least 2400 bps via the DSU path in the PrtSp configuration submenu 2 Set the DSU rate to a value less than 56 kbps OnePrt no undspd Only one TDM Flex port is active and an attempt is made to configure it for underspeed no underspeed port is required Disable the port s underspeed configuration option via the appropriate path DSU or DBM in the PrtSp submenu Port Off Undersp A TDM Flex s port is disabled and is also set to run underspeed port that is disabled cannot run underspeed Correct the problem in one of two ways 1 Set the port speed to any value but Disab in the PrtSp configuration submenu 2 Select another synchronous port to run underspeed via the appropriate path DSU DBM or ExtBU in the PrtSp submenu RTS AnStr Conflc A port s AntiStreaming and RTS Control Set RTS Control to DTE via the settings are not compatible appropriate path Prt1 or Prt2 in the MUX For AntiStreaming to be in effect RTS 10 Control must be set to DTE RTS TxCrr Conflc A port s TxCarrSel Transmitter Carrier Set Transmitter Carrier Select TxCarrSel Select and RTS Cntrl RTS Control and RTS Control RTS Cnirl to settings are not compatible compatible settings via the appropriate When a port
52. 6 7 Press the F1 key to SAVE the selected configuration The Save to screen appears 8 Save the selected configuration to Activ F1 key 9 Press the key to return to the top level menu then select Local again 10 Select the Test branch F3 The Run Test on screen appears 11 Select the device that Failed the DSU or the TDM Flex or DBM 12 Press the F2 key to run the Device Test again The device should pass 13 Should the device fail contact your service representative see Chapter 1 Connecting to the Network Network connections are provided through the 3000 Series Carrier Refer to Figure 3 2 as you read the following sections and set up your network connections Connecting to the NMS A Model 3551 DSU is set up for network diagnostic connection through the shared diagnostic unit SDU which 15 installed in Slot 0 of the carrier Refer to the COMSPHERE 3000 Series Carrier Installation Manual to set up the network diagnostic connection For connection of the DSU see Appendix E of this guide For pin assignments see Appendix D Connecting to the Dial or PSTN Network Connection to the dial network or public switched telephone network PSTN for the carrier mounted Model 3551 DSU 15 through a network interface module NIM that is installed onto the carrier s backplane see Figure 3 2 Refer to the COMSPHERE 3000 Series Carrier Installation Manual for additional information or to ins
53. 62 25 4400 F 1 544 106472970 Model 3550 Digital DDS Network Interface Cables RJ48S Network Cable 14 cord included with Model 3550 14 3600 F3 501 107331381 25 3600 F3 502 107331365 8 pin to 6 pin Modular Cable Model 3550 in Canada 3000 F 1 006 106239155 Model 3550 25 pin Plug to EIA 232 Plug Cable for extended circuits select one EIA 232 Crossover Cable 15 4951 035F 105757520 Pin to Pin EIA 232 Cable straight connection 10 4951 032F 105757496 V 35 Crossover Cable 15 3211 178F 106910466 COMSPHERE 3000 Series Carrier Installation Manual 3000 M3 001 COMSPHERE 48 Vdc Central Office Power Unit 3000 A2 GB41 Installation Manual COMSPHERE 3550 Series Data Service Units Models 3550 and 3551 3550 A2 GB20 User s Guide F 2 December 1996 3550 A2 GB20 20 Equipment List Equipment Part Number Field Service Spares For Model 3550 DSU 870 1858 8001 2 Port TDM Flex 870 1871 8001 For Model 3551 DSU 870 1859 8001 For Model 3550 3551 V 32 bis14 4 kops DBM DBM Core 102 0144 0031 Line Interface 870 1571 8000 Rear Connector Plate 25 Pin ElA 232 25 Pin V 35 869 2211 0011 V 35 Interconnect Cable 1 035 0135 0031 For V 35 operation Port 2 of Model 3550 2 port TDM Flex ACCULINK 3100 Series CSU Wall Mount Adapter for Model 3550 DSU Wall Mount Bracket 1 870 1751 0014 17 Velcro Brand Straps 2 870 1770 0022 RS 310 C L
54. 96 3 5 COMSPHERE 3550 Series Data Service Units 4 Using a Phillips screwdriver loosen the screw Slide the DSU into the slot aligning the circuit holding the circuit pack lock and rotate the lock to card with the rear connector plate until the the open position Figure 3 3 Open the latch connectors seat firmly into the back of the carrier Press the faceplate latch to secure the DSU into the carrier rotate the circuit pack lock into the closed position Figure 3 3 and tighten the screw 5 At the front of the carrier hold the DSU vertically with the latch on its faceplate in the open position Then insert the circuit card into the top and bottom circuit card guides for the slot that 6 Return to the rear of the carrier and tighten the contains the rear connector plate rear connector plate screw SDU DSU FILLER PANEL GUIDES CLOSED 494 12307a 02 Figure 3 3 Model 3551 DSU Installation and Circuit Pack Lock 3 6 December 1996 3550 A2 GB20 20 7 At the rear of the carrier connect the appropriate DTE interface cable EIA 232 D or V 35 to the rear connector plate For an EIA 232 D interface cable connect the EI A 232 D cable to the top DTE connector on the rear connector plate For the 25 pin V 35 interface a V 35 interconnect cable is shipped with the unit To connect a V 35 interface cable to the 25 pin V 35 connector refer to Figure 3 4 and perform the following steps a Connect the 25 pin end of t
55. BM and External DBU If your unit has a DBM installed the External DBU option sets will not appear If your unit does not have a DBM installed the DBM option sets will not appear The Backup option set only appears when a DBM is installed or an external DBU 1s configured to originate backup otherwise the Backup option set will not appear If the unit does not have a TDM Flex installed the MUX and Port Speed option sets will not appear Select storage area Activ Remt Usrl etc from the Load from screen If the unit is a control and you select Remt enter the network address of the remote DSU Select the option set e g DSU Diag DBM to be edited The first configuration option within that set appears Page through each configuration option within the set as follows a Press the F1 key to go to the Next configuration option These configuration options scroll or wrap around e g first then last or last then first b To return to the previous configuration option press the lt I key instead of selecting Next Prev appears over the F1 key c Select Prev by pressing the F1 key As you edit configuration options be aware of the following Using the DCP to Set Configuration Options Configuration options can be edited and saved to either the Activ or Usr1 areas This section provides guidelines for using the DSU s diagnostic control panel DCP to perform these operations In addition an
56. Bracket 1 870 1809 0023 6 x 1 0 Screws 4 870 1817 0023 12 24 Screws 2 506 0025 0031 10 32 Screws 2 503 0002 0131 Clip Nuts 2 302 2508 0131 Ferrite Choke 175 0018 0031 LCD 16 characters by 2 lines with Cable 153 0009 1131 Membrane Switch 631 0014 0031 Table Top AC Transformer included with Model 3550 654 0099 0131 3600 Hubbing Device 870 1669 5100 NMS Adapter Cable Diagnostic Extension 1 5 035 0173 0031 NMS EIA 232 D Interface Connector 6700 Series NMS Adapter 873A 002 0025 0031 NMS 6 pin Modular Cable M6BK 3 035 0145 0331 10 035 0145 1031 25 035 0145 2531 For use by Field Service personnel 3550 A2 GB20 20 December 1996 F 3 COMSPHERE 3550 Series Data Service Units Equipment Part Number Model 3550 Digital DDS Network Interface Cable RJ48S Network Cable 14 cord included with 3550 14 035 0267 1431 25 035 0267 2531 8 pin to 6 pin Modular Cable Model 3550 in Canada 7 035 0279 0031 Model 3550 Dial PSTN Interface Cable Telephone Cord 6 pin Modular RJ11C Permissive PSTN Plug D4BU 7 035 0274 0731 14 035 0266 1431 25 035 0274 2531 Telephone Cord 8 pin Modular RJ45S Programmable PSTN Plug D8W 2 5 035 0116 0231 14 035 0116 1431 25 035 0116 2531 Model 3550 25 pin Plug to EIA 232 Plug Cable for extended circuits select one EIA 232 Crossover Cable 15 818 2759 0111 Pin to Pin EIA
57. COMSPHERE 3550 SERIES DATA SERVICE UNITS MODELS 3550 AND 3551 USER S GUIDE Document No 3550 A2 GB20 20 December 1996 KANADINA on COMSPHERE 3550 Series Data Service Units COMSPHERE Model 3550 and 3551 Data Service Units User s Guide 3550 A2 GB20 20 3rd Edition December 1996 Changes and enhancements to the product and to the information herein will be documented and issued as a new release United States FCC Registration number AW292J 61661 DD N PSTN Ringer Equivalence number REN DBM option 0 7B Canada V 32 Dial Backup Module Certification number 230 3684 A DOC Load number 7 Warranty Sales and Service Information Contact your sales or service representative directly for any help needed For additional information concerning warranty sales service repair installation documentation or training use one of the following methods e Via the Internet Visit the Paradyne World Wide Web site at http www paradyne com e Via Telephone Call our automated call system to receive current information via fax or to speak with a company representative Within the U S A call 1 800 870 2221 International call 727 530 2340 Trademarks All products and services mentioned herein are the trademarks service marks registered trademarks or registered service marks of their respective owners ES Printed on recycled paper COPYRIGHT 1996 Paradyne Corporation All rights reserved Thi
58. CP An SDCP installed in the carrier 15 required for installation and maintenance of the Model 3551 DSU For installation information see the COMSPHERE 3000 Series Carrier Installation Manual A fan module may also be needed to dissipate heat Refer to the Fan Module Installation section in Chapter 3 of the COMSPHERE 3000 Series Carrier Installation Manual to determine whether a fan is required The distance between your DTE and the DSU must be within EIA 232 D V 24 or V 35 limits e For the EIA 232 connector the typical maximum distance is 50 feet at speeds less than or equal to 19 2 kbps If a longer distance is needed use high quality low capacitance cable and ensure that the effective shunt capacitance of the circuit measured at the DSU and including the capacitance of the cable and the DTE does not exceed 2500 picofarads as specified in EIA 232 D e For the V 35 connector the recommended maximum distance between a DTE and DSU is nominally 1000 feet Before connecting the DSU you need to contact the telephone company to coordinate your installation before connecting the DSU to their network The DSU can only be operated at the data rate for which access to the DDS network is provided If a DBM is installed the DSU must also be connected to the dial network You must notify the telephone company before you connect to the dial network Refer to the notice at the front of this guide to ensure compliance with FCC Bell Ca
59. DDS F alarm Digital facility alarm a arm is one of the following network alarms BiplrViol Excessive Bipolar Violations Fac Alarm Facility Alarm OutofServc Out of Service condition No Signal No signal has been received DSU Device Fail Internal failure in the DSU is detected Go to the Test branch for Device Test DSU Disable DSU transmitter is disabled Go to the Control branch to enable the DSU DSUTst test init The DSU is running a test initiated from init test is one of the following tests BERT Bit Error Rate Test BiL Bilateral Loopback Dev Device Test DL Digital Loopback DT Digital Test DTE DTE Loopback E E End to End Test Lamp Lamp Test NetL Network Loopback RL Remote Digital Loopback TM Test Mode initis one of the following initiators DTE Data Terminal Equipment FP Front Panel the DCP NMS Network Management System Ntwk Network Remt Remote DSU External Alarm A The DSU detects a positive voltage on Pin 23 This alarm condition is defined by the Ext Leads configuration option External Alarm B The DSU detects a positive voltage on Pin 19 This alarm condition is defined by the Ext Leads configuration option Invalid Address A DSU was powered up with an invalid address Invalid addresses are 0 This is reserved for the SDU 192 This is reserved for the broadcast address 191 Inva
60. DRESS 1 157 79 DBM ADDRESS 1 157 80 494 14453 Figure 3 5 Addressing Example 3 10 December 1996 3550 A2 GB20 20 To Connect the SDCP to a DSU For the carrier mounted Model 3551 DSU the SDCP must first be reconnected to the DSU Once connected the SDCP operates like a DCP Procedure 1 Press the Select key refer to Figure 3 2 A screen similar to the following appears Carr Slot 1 01 A EA c The cursor is usually positioned under the second position of the slot number 1 0 1 In this example the first line shows 1 indicates Carrier 1 Carr 01 indicates the DSU in Slot 1 A is reserved for future use On the second line Press the F1 key to increment the number that the cursor is on Press the F2 key J to decrement the number Press the lt 1 and gt keys to move the cursor one position to the left or right to change either the carrier or slot number Press the F3 key to toggle between DSUs to switch from 1 01A to 1 02A in this example In our example the previously accessed DSU was located in Slot 2 of Carrier 1 3550 A2 GB20 20 Installing the Model 3551 DSU 2 Press the Select key on the SDCP again The SDCP accesses the DSU in Carrier 1 Slot 1 The top level menu your starting point of the carrier mounted DSU is displayed 1 01A DSU 9 6C Local Remot A lj lelJlel le From the first line of this example you can see
61. Delay is the same as selecting Std except that when an alarm is received CTS does not go low drop until the DBM or external DBU has failed to backup in the time allotted by the Tries Time Out in the Backup options set setting Make sure that Auto Backup in the Backup option set is enabled When Forced On is selected CTS remains ON as long as the DSU is receiving power AntiStream Disab Next Chang Prev Antistreaming only displayed when Full Mode is enabled and a TDM Flex is not installed Antistreaming provides circuit protection against a streaming DTE a defective DTE that has its RTS lead constantly turned ON by clamping the RTS lead of the tributary DSU Antistreaming only takes effect when RTS Cnirl is set to DTE it is disabled when RTS Cntrl is set to FrcOn Chang __ Settimer to any value from 1 to 100 second s in increments of 1 or to Disab when streaming terminal detection is not needed 3550 A2 GB20 20 December 1996 5 17 COMSPHERE 3550 Series Data Service Units Table 5 8 2 of 4 General Configuration Options LSD Lead Std Next Std Delay FrcOn Prev Line Signal Detect Lead only displayed when Full Mode is enabled Controls behavior of the LSD lead Std Select standard so that the LSD lead goes Off when a control mode idle CMI signal is received from the DDS network or there is a DDS failure Delay Select only if you do not want the DSU to respond to a network alarm condition or CMI signa
62. E INSTRUCTION MANUAL MAY CAUSE HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS OWN EXPENSE THE AUTHORITY TO OPERATE THIS EQUIPMENT IS CONDITIONED BY THE REQUIREMENTS THAT NO MODIFICATIONS WILL BE MADE TO THE EQUIPMENT UNLESS THE CHANGES OR MODIFICATIONS ARE EXPRESSLY APPROVED BY PARADYNE WARNING TO USERS OF DIGITAL APPARATUS IN CANADA THE DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR RADIO NOISE EMISSIONS FROM DIGITAL APPARATUS SET OUT IN THE RADIO INTERFERENCE REGULATIONS OF THE CANADIAN DEPARTMENT OF COMMUNICATIONS LE PRESENT APPAREIL NUMERIQUE N EMET PAS DE BRUITS RADIOELECTRIQUES DEPASSANT LES LIMITES APPLICABLES AUX APPAREILS NUMERIQUES DE LA CLASSE A PRESCRITES DANS LE REGLEMENT SUR LE BROUILLAGE RADIOELECTRIQUE EDICTE PAR LE MINISTERE DES COMMUNICATIONS DU CANADA C December 1996 3550 A2 GB20 20 Safety Instructions Government Requirements The Federal Communications Commission FCC requires that instructions pertaining to connection to the telephone network be included in the installation and operation manual Specific instructions are listed in this section Notice to Users of the Digital Data Service 3550 A2 GB20 20 This equipment complies with Part 68 of the FCC rules On the bottom of the equipment is a label or silk screened text that c
63. EEE EE EE bn ET Eoen eai cis oe oe a ane hee as Displaying External Leads 5555605 9 Changing External Leads Reporting External Lead Changes to NMS 1 0 81 5 1 51 5065 Sod eOUr Overview A 3550 Series DSU can be managed from its control panel or from the COMSPHERE 6700 Series NMS This chapter describes how to manage the DSU using the control panel Refer to the COMSPHERE 6700 Series Data Network Management System User s Guide to understand how to manage the unit from the NMS The DSU s menus are organized as a branching hierarchy sometimes referred to as a menu tree Refer to Appendix A as you perform the procedures described in this guide to help you quickly learn more about your DSU LCD DISPLAY COMSPHERE 3550 NETWORK DEVICE MODE ALARM BACKUP DCP and SDCP Operation There are two types of control panels one for each DSU model The standalone Model 3550 DSU Figure 4 1 is controlled from its diagnostic control panel DCP the carrier mounted nest or rack mounted Model 3551 DSU Figure 4 2 is controlled from a shared diagnostic control panel SDCP The SDCP 15 mounted onto the COMSPHERE 3000 Series Carrier to control multiple units NOTE Throughout this guide DCP refers to either control panel DCP or SDCP except where a distinction is made KEYPAD Test Dial TXD RXD RTS CTS DSR DTR LSD O
64. Fac Alarm message C 3 CNN event comcode Command Complete message C 8 Failed error message Failed message command error messages C 9 progress messages communication line DSU V 32 DBM 1 7 compatibilit DBM 1 7 DSU network DSU 1 6 NMS Confg 4 12 Config Corrupt message December 1996 configuration Diagnostic DBM Diagnostic DSU Diagnostic External DBU 5 10 Diagnostic General 5 10 DSU 5 6 External DBU General MUX Port MUX Setup Port Speed DBM Port Speed DSU Port Speed External DBU 5 29 saving setting tables values editing worksheets 1 Configuration Corrupt alarm C failure message C 7 Conflict w Envir DBM error message C 10 error RN cr Connected DBM message C 8 connection DSU DTE 3 9 electrical figure 2 4 connector plate rear control branch 4 19 management NMS 1 1 panel diagnostic format messages crossover cable E A 232 D figure CSA Ctrl CTS status indicator CTS Cntrl 5 17 3550 A2 GB20 20 D data rates DSU V 32 DBM DBM Aggreg Exceeded error message C 11 Answering message Busy error message Call Aborted error message C 10 Callback message Callbck Fail error message compatibility 1 configuration options 5 12 5 12 Conflict w Envir error message C 10 Connected message Device Fail message Dir Empty error message Disable me
65. IN DC OUT jack hubbing device D 3 connector EIA 232 V 24 V 35 dial network connector digital network connector D 2 hubbing device Please wait message PList 4 15 point to point backup poll list acquiring changing displaying port asynchronous rates TDM 8 capacity DTE interface TDM 1 8 rates 1 5 speed DBM configuration options 5 28 DSU configuration options external DBU configuration options 5 29 speeds synchronous rates TDM 1 8 test BERT Port Cntrl Port DTR Alarm message C 5 Port Off Undersp error message Position 5 10 power terminal 4 5 el routine 5 5 Prev 5 5 primary channel progress messages command C 8 dial backup C 8 protocol Advanced Diagnostic ADp Nd Index 7 COMSPHERE 3550 Series Data Service Units Prt Disable message Prt StreamTerm message Prt1 5 27 Prt2 5 27 PrtSp Kbps 5 6 PSTN connecting 2 5 PSTN network connection PTPC PTPT R rate adaption data DSU V 32 DBM 1 7 port 1 5 Rate Kbps RateMismatch DBM error message C 10 rear connector plate Model receive VF interface 1 7 reconfiguring DSU port 4 14 TDM Flex port 4 14 Redun Fan Alarm message Redun Pwr Alarm message Redundant Power Alarm relative humidity 1 4 remote digital loopback DBM test message DSU test message port test message remote DSU DBM test initiator C 3 DSU test initiator C 3 DSU te
66. LED light emitting diode LEDs line communication DSU V 32 DBM 1 7 speeds Link Delay 5 11 link level network addressing 3 10 LinkConfig 5 10 LL 4 9 LL by DTE 5 19 local loopback 4 9 remote digital loopbacks 49 Lpbk LSD status indicator C 2 LSD Lead 5 18 management control manual backup subbranch menu selections backup branch structure tree Menu Mode disabled 4 enabled 2 messages branch control panel device health and status error TDM Flex C 11 expanded health and status format health and status progress command dial backup C 8 subnetwork health and status C 7 Index 6 December 1996 mode DBM C 3 Dial Backup External Backup ure dial PSTN network connection dial network pin assignments D 2 digital network pin assignments NMS connection figure Model 3551 installation and circuit pack lock 3 6 jumper straps rear connector plate switch and jumper locations modulation MPTC M PtSymPrt 5 11 MPTT Msg Clamp Msgs MultiCall 4 7 multiplexing multipoint rate adaption multispeed operation MUX Port configuration options 5 23 Setup configuration options 5 23 CommunicFail message Device Fail message Device Failure Failure alarm message MUX Funct NetL DSU test C 4 network address addressing link level 3 10 compatibility DSU 1 6 con
67. Messages Message Condition Action Conflict w Envir Command conflicts with a test in 1 Check for a test in progress progress or the configuration 15 2 Either wait for the test to finish or abort inappropriate for this command etc the test 3 If there is no test in progress check configuration options Not in Menu Command is not in the supported set Use a valid command No Response Invalid remote address or remote device Check remote address is not powered connected to network or enabled Command Failed Command could not execute and none of __ If problem cannot be corrected call your the error messages above apply service representative Inval Selection Invalid menu selection based upon Press any key to return to the top level No Valid Choices previous selections that caused a menu to menu display with no selectable options 3550 A2 GB20 20 December 1996 C 9 COMSPHERE 3550 Series Data Service Units Table C 9 Dial Backup Error Messages Message Notify NMS Condition Action DBM Busy Yes Telephone line associated with Try again Try another number if possible remote DBM is busy or investigate why the line is busy DBM Call Aborted No Call was aborted from the DCP None DBM Callbck Fail No There was a failure to connect Make sure you have the correct call setup on a callback attempt pointer and that remote DBM has the proper telephone number in that dire
68. N DC OUT Jack Pin Assignments Pin Signal Name 1 V Pass Through 2 DCOCTS CCIRTS 3 DCORTS CCICTS DCOSD CCIRD Signal Ground DCORD CCISD 98 9 T 3550 A2 GB20 20 December 1996 D 3 COMSPHERE 3550 Series Data Service Units 25 PIN SOCKET CONNECTOR ElIA232 MV 24 25 PIN SOCKET CONNECTOR RS366A V 25 3800 V 35 3600 3500 493 13605 01 Figure D 3 Model 3551 DSU 25 Pin EIA 232 25 Pin V 35 Rear Connector Plate 3000 F1 021 D 4 December 1996 3550 A2 GB20 20 Pin Assignments Table D 5 EIA 232 V 24 Connector Pin Assignments Circuit Name Pin EIA 232 Transmit Data TXD Clear to Send CTS Negative Test Voltage Data Signal Rate Selector DCE Source alternate external control lead Data Signal Rate Selector II DCE Source alternate external control Lead SBA Secondary Transmit Data DB Transmitter Signal Element Timing DCE Source SBB Secondary Received Data DD 115 Receiver Signal Element Timing DCE Source LL Local Loopback LL Data Signal Rate Selector DTE Source alternate external control alarm Lead II 5 1 afla Dp 3 1 Q A A IN oD 191 20 CD 108 2 Data Terminal Ready DTR 2
69. NonD and Full Mode is enabled This configuration option allocates the DBM s port bandwidth when there is no excess bandwidth available for in band secondary channel transport used for diagnostic data operation How to Select Bandwidth Select one of the valid diagnostic speeds from the table below for the DBM s port and the DBM s rate as specified in the Rate Kbps configuration option under the DBM option set Example If the DBM s Rate Kbps configuration option is set to 9 6 kbps you can select 100 400 800 1200 or 1600 If you select 400 the resulting DBM port speed will be 9 2 kbps NOTE When The TDM Flex is operating at a line rate greater than 19 2 kbps or with a multipoint configuration 100 bps is not a valid in band secondary channel transport rate If the DBM Rate Kbps is equal to Port Speed or if the underspeed port speed and sum of the TDM Flex ports is equal to the aggregate speed on the DBM Valid diagnostic speeds are 100 400 100 400 800 100 400 800 1200 1600 100 400 800 1200 1600 100 400 800 1200 100 400 800 1200 1600 3550 A2 GB20 20 December 1996 5 9 COMSPHERE 3550 Series Data Service Units Table 5 4 Diagnostic External DBU Configuration Options Diag Type Disr Next Disr None Prev Diagnostic Type This configuration option defines the diagnostic interaction between control and tributary DSUs that are in backup using an external dial backup unit DBU All DSUs on t
70. S bOR Rete GeAea 3 12 Ove rview Installation of the DSUs and carrier related equipment A Model 3551 DSU is designed for installation in a COMSPHERE 3000 Series Carrier which supplies power consists of the following steps which should be performed in the order listed and provides the interfaces for connecting to the DDS or A ATEAN ATAS dial networks Up to 16 DSUs can be installed in the e DSU physical installation carrier Refer to the COMSPHERE 3000 Series Carrier l Installation Manual for additional carrier and installation e Network diagnostic connection a e Software configuration The DSU is delivered ready to install in the carrier It is DDS network or LADs connection configured as a control DSU for operation at 9 6 kbps on 8 multipoint circuit e Dial or PSTN network connection if a DBM 1s installed A rear connector plate which is installed onto the rear of the carrier is shipped with the DSU The rear connector e DSU DTE connection plate contains two connectors 8 25 pin EIA 232 D V 24 _ l connector and a 25 pin V 35 connector Once installed the Verification testing DSU can be removed from the front of the carrier without disconnecting the DTE cables 3550 A2 GB20 20 December 1996 3 1 COMSPHERE 3550 Series Data Service Units Before You Begin The COMSPHERE 3000 Series Carrier should already be installed properly and be operational with a functioning shared diagnostic control panel SD
71. SU transmits the 511 bit test pattern over the network to the remote DSU for an operator specified length of time Jn a multipoint network where only a control DSU can originate a Digital Test tributary DSUs not involved in the test are placed in Test mode for the duration of the test During the test the TXD RXD and RTS LED indicators show the states of the leads at the DTE interface At the conclusion of the test the local DSU releases the remote DSU from Digital Loopback To review the results of the test select Disp Display and press the key to scroll through the results shown in Table 4 3 When the test is over the top line displays Final instead of Active 3550 A2 GB20 20 Table 4 3 Digital Test Results Results Information Displayed Running test timer The Clr selection resets the timer to 0 00 00 Tot Error Running count of bits in error Max if the maximum error count has been reached the maximum being 64000 The Clr selection resets the counter to 0 Err Secs Running count of errored seconds The Clr selection resets the counter to 0 If this test was not run on an aggregate data path the Digital Test was run on port nn Run on port nn End to End Test The End to End EE Test is used to analyze a control and a tributary DSU or DBM and the network circuit between them in both directions independently It transmits fixed packets or blocks of data between DSUs o
72. Tributary DSU Addressing 200 civiecesededsas Connecting the DSU to a DTE os coisa widen Mme POTS asthe ee ce Verifying Operation and Testing Connections Verifying Network Addresses Wertly ine the NetWork ik o4 oboe bd eke eh eats Verifying DBM Operation 0 00 55 5 Verifying TDM Flex Operation et UGS eerren Overview The Model 3550 DSU is designed for desktop operation and is delivered ready to connect to the network It is configured as a tributary DSU for operation at 9 6 kbps on a multipoint circuit If the unit was ordered with a TDM Flex installed Ports 1 and 2 are configured for 9 6 kbps operation and configured as a digital sharing device DSD Both ports are configured for E A 232 operation rather than V 35 operation Refer to the MUX Port option set tables in Chapter 5 to change this configuration on a port by port basis Installation consists of the following steps which should be performed in the order listed e Physical installation e Hardware straps e Electrical connection e Network diagnostic connection e Software configuration 3550 A2 GB20 20 e DDS network or LADS connection e Dial or PSTN network connection if a DBM is installed or if using an external dial backup unit DBU e DSU DTE connection e Verification testing Although the Model 3550 DSU is designed for desk or table top
73. U dial string Digital Loopback DL Digital Test DT DIP switch DMI DOC drop DSR DTE Loopback DTE DTR EIA elastic store End to End Test EE 3550 A2 GB20 20 Glossary A test that uses an internal test pattern generator built into the DSU to verify that the DSU or DBM is working properly The generator sends a test message to the device s transmitter where it is looped back to the device s receiver The incoming message is then checked for errors which are reported as Pass if there are no errors and Fail if an error is found The face of the DSU that continuously provides status information about the DSU s operation and allows an operator to manage its operation This is a generic term used for both the standalone and carrier mounted DSU models See shared diagnostic control panel SDCP for the Model 3551 An external digital or analog device attached to the Model 3550 or 3551 DSU that is used for dial restoral also see DBM A sequence of up to 36 characters that the DBM can send into the dial network to establish a call to a remote backup device It consists of a telephone number and may include other information such as a callback directory pointer A test used for manual testing of the remote end of a circuit For example a DL may be required to complete an external bit error rate test BERT from the remote DSU The local DSU receives test data loops it back to the transmitter an
74. a Service Units Power Up Routine When power is applied the DSU e Determines what options DBM or TDM Flex are installed if any e Runs a Device Test on itself and each of the installed options During the tests all indicators on the DCP light briefly and the message Power Up Tests appears on the liquid crystal display LCD e Displays the results of each test momentarily as Pass Fail or Abrt Abrt indicates that the Device Test was aborted because a network loopback was in progress during the power up procedure These tests take about 20 seconds to complete If a TDM Flex is installed MUX is displayed as Pass or Fail If the DSU or DBM fails this test follow the procedure below Refer to Appendix A as you perform the procedures described in this guide Refer to Chapters 4 and 5 for additional examples and procedures Procedure 1 Press the key to return to the top level menu 2 Select Local F1 key 3 Press the gt key to scroll the Confg Configuration branch into view 4 Press the function key directly below Confg 5 Press the F1 key to select Opts Configuration Options The Load from screen appears 6 Press the gt key to bring the factory loaded unit configurations into view and select the appropriate configuration e PTPC for a point to point control e PTPT for a point to point tributary 9 MPTC for a multipoint control 9 MPTT for a multipoint tributary 3 8 December 199
75. a TDM Flex installed and enabled Sets the speed of the DTE port interface The port speed is set to any value ess than or equal to the DBM Rate Kbps set above The DBM performs rate adaption if set to less than the DBM port rate 14 4to Select the port speed for the DBM 14 4 will not appear for a 12 0 kbps DBM 1 2 kops Disab Select disable to set the port speed to 0 TxClkSource Int for a control DBM RXC for a tributary DBM Next Int RXC Ext 1 Prt2 DSU Prev Transmit Clock Source Specifies the transmit timing source for the DBM Int Select internal clock source to take timing from the DBM This setting is used primarily in point to point applications RXC Select receive clock source to take timing from the remote DBM s clock source Ext Select external clock source when timing is taken from the external Transmit Timing lead on Port 1 not displayed if a TDM Flex is installed Prti or Select the port that timing is to be taken from using the selected port s external Transmit Prt2 Timing lead displayed if a TDM Flex is installed and is enabled DSU Select the DSU s clock source when connected to a DDS network and the network is to provide the timing Do not select DSU if the DSU and the DBM operate at different rates CarrLossDisc Yes Next Yes No Prev Carrier Loss Disconnect only displayed when Full Mode is enabled Controls whether the DBM terminates a call when receive signal carrier is lost or whe
76. afety 3550 DSU 3551 DSU 3000 Series Carrier Emissions Bell Canada AC POWER REQUIREMENTS 3550 DSU 3550 DSU with DBM 3550 DSU with 2 Port TDM Flex 3551 DSU 3551 DSU with DBM V 32 DBM 3000 Series Carrier 16 DSUs with DBMs plus SDU and fan module DTE INTERFACE 3550 DSU 25 pin D subminiature connector 34 pin connector 3551 DSU with 25 Pin V 35 Interface Uses a Rear Connector Plate with two 25 pin D subminiature connectors ENVIRONMENT Operating Temperature Storage Temperature Relative Humidity Shock and Vibration 1 4 Class A digital device AW292J 61661 DD N Listed U L 1950 second edition Recognized Component UL 1950 second edition Certified CSA 22 2 No 950 M89 Certified Component CSA 22 2 No 950 M89 CSA 108 6 M1983 Class A digital apparatus DCTE Specifications July 1989 Issue 1 24 Vac CT 60 Hz 3 0 093 amp 5 8 watts at 115 Vac 24 Vac CT 60 HZ 3 0 115 amp 9 5 watts at 115 Vac 24 Vac CT 60 Hz 3 0 103 amp 8 6 watts at 115 Vac 24 Vac CT 60 Hz 3 0 029 amp 4 5 watts at 115 Vac 24 Vac CT 60 Hz 3 0 080 amp 8 0 watts at 115 Vac 24 Vac CT 60 Hz 3 0 024 amp 2 0 watts at 115 Vac 90 132 Vac 60 Hz 3 1 650 amp 165 watts at 115 Vac EIA 232 D CCITT V 24 ISO 2110 CCITT V 35 ISO 2593 EIA 232 D CCITT V 24 ISO 2110 CCITT V 35 ISO 2593 A V 35 Interconnect Cable is required to use the V 35 connector The cable provides
77. an only be operated at the data rate for which access to the DDS network is provided If a DBM is installed the DSU must also be connected to the dial network You must notify the telephone company before you connect to the dial network Refer to the notice at the front of this guide to ensure compliance with FCC Bell Canada and Canadian DOC rules No on site assembly of the DSU is required However installation should not proceed if any of the following is missing e A power cord with table top ac transformer e A 14 ft cable for connection to the DDS network with 8 pin RJ48S modular plug on each end For Canadian purchasers an 8 pin RJ48S connector is on one end while a 6 pin connector is on the other is required order feature number 3000 F 1 006 If the DSU 15 equipped with a DBM a dial interface cable should have been ordered e Permissive RJ11C 8 6 pin modular plug at each end feature number 4400 F1 53x or 3600 F3 503 e Programmable RJ45S an 8 pin modular plug at each end feature number 4400 F1 54x 2 2 December 1996 Contact your service representative if any of these items 15 missing from the shipping container or to order the appropriate dial interface cable If your DSU is equipped with a DBM you may need to change the DSU s hardware straps before installing the DSU How to Change Hardware Straps HANDLING PRECAUTIONS FOR STATIC SENSITIVE DEVICES This product is designed to protect
78. and dBm Frame ground FG connected to signal ground SG 1 2 Off FG connected to SG through 100 ohm resistor default ON is to the rear as you face the front of the DSU Off is to the front 3550 A2 GB20 20 December 1996 3 3 COMSPHERE 3550 Series Data Service Units Table 3 2 Model 3551 DSU Jumper Straps Strap State of ee Jumper Strap Function J12 V 35 Test Mode Indication Left Enables V 35 Test Mode Indication Pins 1 and 2 This is the factory default Right Disables V 35 Test Mode Indication Pins 2 and 3 J13 Left EIA 232 D Test Mode Indication Left Enables 232 Test Mode Indication Pins 1 and 2 This is the factory default Right Disables ElIA 232 D Test Mode Indication Pins 2 and 3 J20 Alarm Monitoring used with the 48 Vdc Central Office Power Unit Left Disables the 48 Vdc alarm monitoring function Pins 1 and 2 This is the factory default Right Enables the 48 Vdc alarm monitoring function Pins 2 and 3 the NMS adapter cable is being used for alarm monitoring J21 Alarm Monitoring used with the 48 Vdc Central Office Power Unit Left Enables control of alarm monitoring via the NMS adapter cable Pins 1 and 2 the NMS adapter cable is being used for alarm monitoring Right Disables control of alarm monitoring via the NMS adapter cable Pins 2 and 3 a standard EIA 232 cable or the NMS adapter cable is being used for the diagnostic ch
79. annel This is the factory default 3 4 December 1996 3550 A2 GB20 20 Installing the Model 3551 DSU Installing the DSU 1 2 Procedure 1 At the rear of the carrier set the tab on the rear connector plate into one of the slotted grooves on the carrier s backplane Loosely fasten the screws Make sure the rear connector plate uses the same slot position intended for the DSU The initial installation procedure for the Model 3551 DSU requires the installation of a rear connector plate onto the rear of the COMSPHERE 3000 Series Carrier Figure 3 2 After the initial installation the DSU can be installed or de installed by simply removing the DSU from the carrier 2 Loosely fasten the screw attached to the rear connector plate allowing for slight adjustment that may be needed when installing the DSU 3 Change any default hardware strap settings that may be required before installing the DSU DSU 25 PIN 2 232 24 INTERFACE SDU CIRCUIT CARD CC IN DC OUT CC OUT DC IN FP IN FP OUT S2 CARRIER ADDRESS 1 PROTOCOL STRAP 25 PIN V 35 INTERFACE DIAL NETWORK INTERFACE MODULE SLOTS 1 8 DIAL NETWORK INTERFACE MODULE SLOTS 9 16 ALARM E1 amp E2 DDS INTERFACE SLOTS 1 8 NOT SUPPORTED CONNECTORS NOT SUPPORTED FOR 3551 DSUs AC POWER FOR 3551 DSUs DDS INTERFACE 494 14465 SLOTS 9 16 Figure 3 2 COMSPHERE 3000 Series Carrier Rear View 3550 A2 GB20 20 December 19
80. ary 6 COMSPHERE 3550 Series Data Service Units Application data may be disrupted when running a test or running the test may cause the application session to be dropped or terminated The result depends upon the front end processor the time out parameters etc Diagnostic messages with a duration of 5 seconds or less that are sent over the primary data channel These messages may interrupt customer data causing errors requiring retransmission of data blocks They should not however cause termination of the communication session A feature that allows carrier mounted DSUs to share the same control panel Installed on one COMSPHERE 3000 Series Carrier it controls and monitors the DSUs in all the carriers in the cabinet A single SDCP can control up to eight carriers with a total of 128 DSUs and if present 128 DBMs A circuit card that plugs into a dedicated slot slot 0 in the COMSPHERE 3000 Series Carrier to provide the shared diagnostic control panel SDCP and network management interfaces to the DSUs in the carrier It translates the network management protocol to the devices in the carrier and routes incoming messages to the appropriate slots The Model 3550 DSU which is designed for desktop operation A standalone DSU can be configured as either a control or a tributary A circuit card that supports time division multiplexing on two ports and which can also increase digital sharing capability The process of negotiating a
81. ators and the control panel s LCD are operating Local Area Transport Area A region served by a local exchange carrier LEC that consists of one or more area codes Liquid Crystal Display A thin sandwich of two sealed glass plates containing liquid crystal material When voltage is applied the amount of light able to pass through the glass plates is altered so that messages may be written on the display Limited Distance Modem also called a local area data set or LADS Local Exchange Carrier A company that provides intra LATA local exchange carrier telecommunication services like NYNEX or Bell South Light Emitting Diode A light or status indicator on the diagnostic control panel DCP that glows in response to the presence of a certain condition e g Alrm NMS communications are directed to a tributary via a link level address It takes the form of control network address tributary network address e g 157 04 DSU control address of 157 and tributary address of 04 A test used to determine whether the DSU s DTE connection and the DSU are operating properly The DSU must be connected to the DTE for this loopback to be run The state of the received Line Signal Detect lead also known as carrier detect December 1996 3550 A2 GB20 20 multipoint circuit Network Management System NMS non disruptive diagnostics non disruptive session option sets permissive interface physical address point t
82. b Underspeed Disab Prt1 Prt2 Status Indicators and Control Panel Messages Gead a 17 1 1111141 5 119 0 6 ee end Control Panel Messages OM eho tnt oe Rea Health and Status Messages Progress 66 9 88 Paot 1 6 cache seus Re ERE 5 Overview This appendix describes the status indicators on the DSU s control panel the Diagnostic Control Panel DCP for a Model 3550 and the Shared Diagnostic Control Panel SDCP for the Model 3551 Informational messages that may appear on the control panel while a command is executing or when a command is prevented from executing are also described 3550 A2 GB20 20 Status Indicators Status indicators provide information on the current operating condition of the DSU The status indicators of the Model 3550 DSU appear on the DCP s faceplate The status indicators for the carrier mounted Model 3551 DSU are spread across the the faceplate of the DSU the SDCP and the faceplate of the shared diagnostic unit SDU if installed Refer to the COMSPHERE 3000 Series Carrier Installation Manual for SDU status indicator information The DSU DCP and SDCP status indicators are described in Tables C 1 and C 2 December 1996 C 1 COMSPHERE 3550 Serie
83. cations already configured All you have to do is select the appropriate application and load the preset configuration into the unit These configurations include 9 PTPC Point to point control DSU 9 PTPT Point to point tributary DSU 9 MPTC Multipoint control DSU 9 MPTT Multipoint tributary DSU Select the appropriate configuration based upon how the unit will be used within your network Examples of typical point to point and multipoint configurations are shown in Appendix E Refer to the DSU s menu in Appendix A as you follow these steps 1 Select Confg Configuration branch Procedure 2 Press the F1 key to select Opts Configuration Options subbranch The Load from screen appears 3 Press the lt or key to scroll the desired configuration into view 3550 A2 GB20 20 December 1996 1 2 Select an option set e g DSU F2 key Press the F1 key Next to scroll through each configuration option s default factory loaded setting NOTE Full Mode Menu subbranch was enabled every configuration option will display If Full Mode was disabled only configuration options likely to change will display The option sets DSU Diag DBM etc scroll from the last to the first e g MUX PrtSp SAVE DSU Diag etc Select Prev press the lt key to display Prev then select it Press the A key to return to the Edit Save screen You can
84. ce Permissive Programmable Frame Ground Signal Ground Connected Disconnected Test Mode indication Enabled Disabled Backup Value MUX Port 1 Value Auto Bckup Enab Disab DTE Port ElA232 V 35 Backup Dir Chang 1 10 Async Sync Enab Disab FacAlOnCMI Enab Disab Async Rate Sync 1800 1200 600 300 150 AutoRestor Enab Disab AsyncBit Char 6 7 8 9 10 NtwkTimOut Chang min and sec 1 to 30 min Stop Bits 1 2 RestorTimOut Chang min and sec 1 to 60 min Overspeed 1 25 2 5 TriesTimeOut Chang min and sec 1 to 60 min RTS Cntrl FrcOn DTE MultiCall Enab Disab TxCarrSel Const Cntrl RxCarrSel Const Cntrl Mark PCC Buffer Enab Disab Backup Directory Dial String Elast Stor Enab Disab DBM only RTS CTS Del Chang 0 to 1040 millisec 1 DTR Alarm Enab Disab 2 AntiStream Chang 1 to 100 sec 3 DSR FrcOn Enab Disab 4 DSR on Tst Enab Disab 5 6 7 8 Port Speed DSU Value 9 1 xx x 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab 10 Prt2 xx x 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab Underspeed Disab Prt1 Prt2 Port Speed DBM Value MUX Setup Value Prt1 xx x 14 4 56 12 0 9 6 4 8 2 4 1 2 Disab MUX Funct Enab Disab Prt2 xx x 14 4 12 0 19 2 9 6 4 8 2 4 1 2 Disab Share DevA Enab Disab Underspeed Disab Prt1 Prt2 Port Cntrl Host DSD open yang Prt1 xx x 64 56 48 28 8 19 2 14 4 9 6 4 8 2 4 1 2 Disab Prt2 xx x 6
85. cember 1996 2 11 COMSPHERE 3550 Series Data Service Units Verifying DBM Operation If a DBM is installed test the tributary DBM for dial tone and verify that the DSU can place and receive calls 2 Procedure 1 2 Select Bckup F2 Select Dial to establish a dialed call to the tributary Refer to Chapter 4 for the procedure for entering telephone numbers Select Dial to switch to the dial circuit Perform a Digital Test following the DBM path rather than the DSU path No error message should appear Select DrBU to drop the backup call Perform a Digital Test on the DBM Follow the Verifying the Network procedure selecting DBM instead of DSU Step 2 Verifying TDM Flex Operation If a TDM Flex is installed perform a Digital Test on each port 2 12 Other Tests The following lists the tests available on your DSU Refer to the Test Branch section of Chapter 4 for further test information as well as more detail on how to configure and operate the DSU Refer to Appendix A to determine how best to access each test December 1996 Device Test Devic Local Loopback LL DTE Loopback DTE Digital Loopback DL Remote Digital Loopback RL Bilateral Loopback Digital Test DT End to End Test EE Bit Error Rate Test BERT Lamp Test Lamp 3550 A2 GB20 20 Installing the Model 3551 DSU VCO bac tee E Geet eee 6S 8 ewe eae h ab bane e ore eet See EA ee ene ee bees
86. circuit support The network can be modems controlled from the DSU s control panel or a 6700 Series On the tabulany side ot te Gontemadone einer NMS Figure E 2 shows sample multipoint standalone Model 3550 DSUs equipped with DBMs or configurations connected to an external DBU are shown CONTROL 6700 SERIES M6BJ CC IN 88 TRIBUTARIES ADAPTER 002 0025 0031 3550 DSU CUSTOMER SUPPLIED MATRIX so Je hi An PRIMARY DATA gt gt gt NONDISRUPTIVE DIAGNOSTICS 494 1 4461 Figure E 2 Multipoint Application Configurations 3550 A2 GB20 20 December 1996 E 3 Equipment List F Feature Part No G Factory Install F Field Install 3550 A1 001 3550 A1 002 3550 A1 003 Equipment Comcode Model 3550 Standalone DSU With V 32 bis 14 4 kops DBM With 2 port TDM Flex Model 3551 Carrier Mounted DSU includes rear connector plate Without Options With V 32 bis 14 4 kops DBM 107330029 107330037 107330045 3551 B1 001 3551 B1 002 107330052 107330060 Field Installation For Model 3550 3551 V 32 bis14 4 kops DBM 3550 F 1 201 107329922 For Model 3550 2 port TDM Flex 3550 F1 202 107329930 Factory Installation For Model 3550 V 32 bis14 4 kbps DBM 3550 G1 201 107329955 Rear Connector Plate 25 Pin EIA 232 25 Pin V 35 3000 F 1 021 106476229 V 35 Interconnect Cable 3000 F 1 510 106476237 Fo
87. communication rate between V 32 modems during call setup A circuit capable of generating modulating and sending a signal for communication control or other purpose A DSU or modem that is for diagnostic purposes at a logically subsidiary level in a hierarchical network Tributary DSUs in a network receive data from the control DSU as well as from any network management system present in the network The state of the Transmitted Data lead Underwriters Laboratories Inc Universal Service Ordering Codes A Paradyne automated network management system that allows an operator to monitor network conditions analyze problems and take restorative measures from a single personal computer PC workstation This NMS operates in a Microsoft Windows graphic environment December 1996 3550 A2 GB20 20 Abort selective subnetwork 4 9 abort selective subnetwork Abort Call failure message AC power requirements Active message DBM Addr NG rs assigning 4 18 addressing tributary DSU 2 9 2 9 3 10 Aggreg Exceeded error message Alarm 4 6 All Async gt Ager error message C 1 Alrm status indicator SDCP C 2 Ansr Aaa DBM message AntiStream 5 17 5 26 application configuration selecting 4 13 DSU TDM V 32 DBM approvals V 32 DBM 1 7 Async Rate 5 24 Async Undspeed error message C 11 Async gt Sync 5 20 5 23 AsyncBit Char 5 20 asynchronous Auto Backup Auto Bcku
88. continuously during testing allowing a DTE that relies on DSR being ON to send test messages to the DSU Disab Select so that DSR is Off during testing Circ Assur Disab Next Enab Disab Prev Circuit Assurance only displayed when LinkConfig is set to Pt Pt and Full Mode is enabled Controls behavior of the CTS lead in response to a data signal from the network If CTS Cnitrl is set to RTS or FrcOn this configuration option is ignored Enab Select to have the DSU turn Off the CTS lead if a control mode idle CMI signal is received Disab Select if the DSU is to be unaffected by the CMI RespondRDL Disab for MPTC Enab for all other configurations Next Enab Disab Prev Respond to Remote Digital Loopback only displayed when Full Mode is enabled Determines whether the DSU responds to a V 54 Remote Loopback request Enab _ _ Select to perform a Digital Loopback Disab Select to ignore the Loopback command 5 18 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 8 3 of 4 General Configuration Options LL by DTE Disab Next Enab Disab Prev Local Loopback by DTE only displayed when Full Mode is enabled Controls the use of Pin 18 of the EIA 232 D V 24 interface or Pin L of the V 35 interface by the DTE to initiate a Local Loopback when the DSU is the active device Whenever this lead is ON the Local Loopback overrides any other diagnostic tests run by the network Enab Selectif the DTE i
89. ctory If both are correct attempt to place a manual call from the remote DBM DBM Yes DBM is not able to dial out e g Wait until the test is completed or abort Conflict w Envir test is being run there is no the test DBM at the far end DBM Dir Empty Yes An attempt was made to place a Check Backup Directory entries and call from an empty directory numbers DBM DTR Discon Yes DTR has gone low or the call Raise DTR at the DTE or disable the did not connect DTRCallCon configuration option DBM Illegal Char Yes Illegal character in the directory Check directory entry specified DBM No Answer Yes There was no answer from the 1 Check that remote DBM is configured remote DBM or modem for many calls 2 Make sure remote DBM is properly connected to the dial network 3 Check operational status of remote DSU using a Device Test 4 Attempt to place a call from remote DBM If it cannot be placed replace the DBM DBM NoDialTone Yes No dial tone received from the Check the dial network connections If network conditions are good and no problem is found call telephone company and report the problem DBM No Ringing No DBM is not getting ringback Look for line problems If conditions are from the other end good and no problem is found call telephone company and report the problem DBM No Call attempt failed for 1 Check DBM for proper operation by NotConnected unspecified reasons running a Device Test 2 Check the DBM s configu
90. ctory for the telephone number to be dialed AutoRestor Select Enab When enabled the DBM or external DBU automatically restores data to the DDS circuit when service 1s restored and the amount of time set in RestoreTimOut has expired NtwkTimOut Set the amount of time that the DDS circuit must be out of service before a backup attempt is made from 0 00 minutes seconds to 29 59 the default is 0 20 RestorTimOut Set the amount of time that the DDS circuit must be back in service before automatic restoration is attempted from 1 10 60 minutes the default is 5 minutes Operating the DSU TriesTimeOut Specify the overall time limit during which a DBM will automatically attempt to establish a dial backup call from 1 to 60 minutes the default is 15 minutes Auto Bckup must be enabled MultiCall Select Enab When enabled instead of following the normal calling cycle the DBM cycles through all dial strings contained in its Backup Directory until a call attempt is successful Do not enable MultiCall unless more than one telephone number is in the Backup Directory and each successive 1 e 1 2 3 etc telephone number is different from the previous entry Directory entries should be unique Understanding Operating Modes When a DSU 15 equipped with a DBM or an external DBU the Backup branch controls operation of the Dial Backup function The DBM has four modes of operation In Idle mode th
91. cts the DSU to the dial or public switched telephone network PSTN network and one connects the DSU to the DDS network Follow the appropriate procedure when making your network connections December 1996 2 5 COMSPHERE 3550 Series Data Service Units Connecting to the NMS A 3600 Hubbing Device is required to connect the control DSU to the 6700 Series NMS When connected to the NMS the DSU can be controlled and configured from the NMS rather than from the DCP alone 2 Procedure 1 Plug the 4 pin modular plug of the 3600 Hubbing Device Figure 2 3 into the DSU jack labeled CC DC 2 Plug one end of an M6BJ cable into the hubbing device jack labeled CC IN DC OUT 3 Plug the other end of the 8 pin M6BJ cable into the 8 pin end of the 873A adapter 4 Plug the D type end of the 873A adapter into the appropriate 6700 Series NMS jack Refer to your COMSPHERE 6700 Series NMS documentation to control and configure the DSU from the NMS NMS NETWORK CONNECTION LOW VOLTAGE AC POWER IN 2 lt V oO N t 3 m VICE 496 14576a Figure 2 3 Model 3550 DSU NMS Connection 2 6 December 1996 Connecting to the Dial or PSTN Network If your DSU is equipped with a V 32 DBM refer to Figure 2 4 as you follow these steps 2 Procedure 1 Plug either end of the dial analog interface cable into the DSU jack labeled BACKUP e Permissive service telephone cord with 6 pin modular RJ
92. d Prt1 or Select the port that timing is to be taken from using the selected port s external Transmit Prt2 Timing lead Prt2 is only displayed if a TDM Flex is installed and enabled DDS Select the DDS network when the DSU is connected to a DDS network and the network provides the timing or when a LADS configuration with a remote DSU is providing the timing Msg Clamp Enab Next Enab Disab Prev Message Clamping only displayed when Full Mode is enabled Controls data lead behavior when disruptive diagnostic tests and commands are received from the remote DSU It applies to both the DSU and DBM Enab _ _ Select to prevent diagnostic messages from reaching the DTE interface Disab Select if the remote DSU is configured for switched RTS that is RTS Control is set to DTE in the General Gen configuration options TxElasStor Disab Next Enab Disab Prev Transmit Elastic Store only displayed when Full Mode is enabled and a TDM Flex is not installed Using a transmit buffer on the DSU s transmitted data TXD lead serial data is clocked into the DSU s elastic store using clock provided by the extended circuit received clock lead The DSU s own system timing is used to clock data out of the buffer Transmit Elastic Store is reset each time the unit powers up the buffer overflows or after the RTS lead makes an Off to ON transition Enab Select enable when interfacing with a DCE that receives clock from its own netwo
93. d returns it to the network A test used to test two DSUs and the circuit between them Both DSUs must be connected 10 the network before this test 15 run Dual In line Package switch Data Mode Idle Refers to a sequence of Is transmitted or received on the DDS network When the General Gen branch configuration option RTS Cntrl is set to FrcOn the DSU will transmit DMI whenever RTS is Off Data Mode Idle operation is recommended for point to point applications Canadian Department of Communication A tributary site The state of the Data Set Ready lead A test that allows you to test each port independently This test loops the data path at the DTE interface The state of the Data Terminal Ready lead Electronic Industries Association This organization provides standards for the data communications industry to ensure uniformity of interface between DTEs and DCEs A configuration option that is enabled in a tributary DSU to compensate for phase differences between DDS network timing and the received timing of an analog dial modem or DSU It uses a buffer storage area of 16 bits A test used to analyze a control and tributary DSU and the circuit between them in both directions independently each DSU sends the same pattern and checks the incoming pattern for errors December 1996 Glossary 3 errored second facility alarm fallback FCC Front End Processor FEP generator IEC LADS Lamp Test LATA
94. dix contains two Configuration Worksheets two pages each These worksheets include the following e Configuration options as they appear when Menu Full Mode is enabled e Configuration options as they appear when Menu Full Mode is disabled Refer to the Configuration Option Tables section Chapter 5 when configuring the unit or when more detailed configuration information is needed 3550 A2 GB20 20 December 1996 Instructions Configuration Worksheets can be used for reference or they can be used to record changes made to the DSU s configuration options or to record the configurations saved to the Usr1 storage area 1 Select the worksheet version you will be editing Full Mode Enab or Disab and make a copy 2 Complete the information at the top of each worksheet first If you have a Model 3550 standalone DSU enter your site in the location field If you have a Model 3551 carrier mounted DSU enter the DSU s carrier and slot location Also make a copy for each DSU 3 Circle the appropriate setting s either all of the configuration option changes or only those changed from their factory loaded default settings 4 Store the worksheets so they will be available when needed B 1 Model 3550 or 3551 DSU Configuration Worksheet 1 of 2 Full Menu Mode Enabled
95. e 4951 035F D 8 December 1996 3550 A2 GB20 20 3550 A2 GB20 20 KK TXDA TXD B RXDA RXD B TX CLKA TX CLK 8 AUX EXT CLKA AUX EXT CLK B RX CLKA RX CLK B EXT CLKA EXT CLK 5 FRM GND SIG GND RTS CD DTR DSR Figure D 6 V 35 Crossover Cable 3211 178F gt mionooreZzcexe lt erene xoawvoaiw 15 FT 0 5 FT December 1996 gt Imonwr lt xcs lt x PNFUVHATSH 492 14050 Pin Assignments D 9 Application Configurations OVEN OW sis ec cheb one ee adeet sone ohne eed eaees Point to Point Applications Multipoint Applications Overview This appendix shows examples of typical point to point and multipoint applications for both control and tributary DSUs Refer to Figures 1 and E 2 when configuring your network Point to Point Applications Model 3550 and Model 3551 DSUs provide both single port circuit support only the Model 3550 DSU supports TDM Flex circuit support When a V 32 DBM is installed the DSU provides full backup capability when operating at speeds of 14 4 kbps or below Backup can be automatic or it can be initiated manually from the DSU s control panel or a 6700 Series NMS 3550 A2 GB20 20 External dial backup units DBUs like 3800 Series modems can also be used for backup when the External Backup ExtBU configuration option is enabled refer to Chapter 5 Figure E 1 shows a point to point
96. e Rate Yes No LL by DTE Enab Disab AutoAnswer Enab Disab RL by DTE Enab Disab TxElasStor Enab Disab Bilat Lpbk Enab Disab Diagnostic DBM Value RxElasStor Enab Disab Ext Leads ExtLd Rate RPower Diag Type NODD DSi Mixed None Call Setup None Pswrd Cllbk Alarm CCN by EL Enab Disab 2nd Ch bps 100 400 800 1200 1600 RxPwd Chang up to 10 digits DTR Alarm Enab Disab TxPwd Chang up to 10 digits Async Sync Enab Disab V 13 Signl Enab Disab AsyncBit Char 6 7 8 9 10 Diagnostic Value External DBU Dial Test Enab Disab Stop Bits 1 2 Diag Type Disr None DTRCallCon Ansr Disab Overspeed 1 0 2 3 Full Menu Mode Enabled Model 3550 or 3551 DSU Configuration Worksheet 2 of 2 30 7 MAUI DTE Port ElA232 V 35 Async Sync Enab Disab Async Rate Sync 1800 1200 600 300 150 AsyncBit Char 6 7 8 9 10 Stop Bits 1 2 Overspeed 1 25 2 5 RTS Cntrl FrcOn DTE TxCarrSel Const Cntrl RxCarrSel Const Cntrl Mark PCC Buffer Enab Disab Elast Stor Enab Disab RTS CTS Del Chang 0 to 1040 millisec DTR Alarm Enab Disab AntiStream Chang 1 to 100 sec DSR FrcOn Enab Disab DSR on Tst Enab Disab Hardware Straps Value DDS Interfa
97. e port s operating rate 1 2 kbps Disab Select to disable the port Option Verification For all ports the DSU verifies that the sum of the individual port speeds does not exceed the primary aggregate speed set in Rate Kbps in the DSU option set If the sum of the port speeds equals the primary aggregate rate an underspeed port selection is required Prt2 9 6 9 6 Next 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab Prev Port 2 Speed Primary data rate in kbps on Port 2 Must be set to the same value in the remote DSU 64to __ Select to set the port s operating rate 1 2 kbps Disab Select to disable the port Option Verification For all ports the DSU verifies that the sum of the individual port speeds does not exceed the primary aggregate speed set in Rate Kbps in the DSU option set If the sum of the port speeds equals the primary aggregate rate an underspeed port selection is required Underspeed Disab Next Disab Prtt Prt2 Prev Underspeed Port Selects which port is to run slightly underspeed to allow for in band framing and in band secondary channel transport if used If more than one port is active and the sum of the port soeeds equals the primary aggregate speed then one synchronous port must run underspeed The number of bits per second used for in band framing is 10 The in band secondary channel transport speed is set in 2nd Chan bps and if used includes the 10 bps in band framing A port used for asynchron
98. ear panel has both a 25 pin EIA 232 D V 24 connector and a 34 pin CCITT V 35 connector used for higher operating speeds You can use either interface When the unit is equipped with a TDM Flex either of these interfaces can be used as Port 1 The TDM Flex provides an additional interface to be used as Port 2 This is a D type connector If the port is to operate at a speed greater than 19 2 kbps use the V 35 interconnect cable to provide an interface between the TDM Flex s D type connector and the DTE cable s V 35 connector Figure 2 7 shows a DSU as well as a DSU equipped with a TDM Flex The DSU without TDM Flex illustrates cabling for an EIA 232 application the DSU with TDM Flex illustrates cabling for V 35 applications Refer to this figure as you connect your DSU to the data terminal equipment DTE Be sure to select the appropriate cable E A 232 or V 35 for your application DSU DSU WITH TDM FLEX PORT 1 INTERFACE PORT 1 V 35 INTERFACE 2 Procedure 1 V 35 gr INTERFACE __ lt gg f EIA 232 D V 24 Connect the plug end of the DTE cable to Port 1 either the EIA 232 D or the V 35 connector Figure 2 7 shows Port 1 using the EIA 232 D connector Tighten the two holding screws Connect the other end of the cable to the appropriate port on the computer or DTE Tighten any holding screws If necessary activate the port to match the interface eit
99. ect the rate of the asynchronous port to 150 AsyncBit Char 8 Next 6 7 8 9 10 Prev Asynchronous Bits per Character Specifies the length of a character including the parity bit but excluding the start and stop bits This configuration option is displayed only if Async Sync is enabled If set to 10 the Stop Bits configuration option only displays 1 6to 10 Select the asynchronous bits per character Stop Bits 1 Next 1 2 Prev Stop Bits Specifies the number of stop bits in an asynchronous character This configuration option is displayed only if the Async Sync configuration option is enabled and AsyncBit Char is set to 6 7 8 or 9 If AsyncBit Char is set to 10 only 1 stop bit appears 1to2 Select the number of stop bits to be used Overspeed 2 5 Next 1 25 2 5 Prev Overspeed Selects the overspeed range of the asynchronous to synchronous converter This configuration option only applies when Async Sync is enabled 1 25 Select the basic overspeed range Basic range provides 1 25 overspeed in the DTE asynchronous data rate 2 5 Select the overspeed percentage for extended range Extended range provides 2 5 overspeed in the DTE asynchronous data rate RTS Cntrl DTE Next FrcOn DTE Prev Request to Send Control Controls the behavior of the internal RTS lead FrcOn Select for the DSU to keep the internal RTS ON continuously Any data appearing on the transmitted data TXD lead from the DTE is t
100. ed in separate buildings are interconnected the voltage potential may cause a hazardous condition Consult a qualified electrical consultant to determine whether or not this phenomenon exists and if necessary implement corrective action prior to interconnecting the products In addition if the equipment is to be used with telecommunications circuits take the following precautions Never install telephone wiring during a lightning storm Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface Use caution when installing or modifying telephone lines Avoid using a telephone other than a cordless type during an electrical storm There may be a remote risk of electric shock from lightning Do not use the telephone to report a gas leak in the vicinity of the leak December 1996 B COMSPHERE 3550 Series Data Service Units Notices WARNING THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE PURSUANT TO PART 15 OF THE FCC RULES THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT THIS EQUIPMENT GENERATES USES AND CAN RADIATE RADIO FREQUENCY ENERGY AND IF NOT INSTALLED AND USED IN ACCORDANCE WITH TH
101. ed when LinkConfig is set to M Pt and Full Mode is enabled Used only ina multipoint configuration This configuration option enables rate adaption in the tributary DSU to control direction on a multipoint circuit An example of multipoint rate adaption would be when the port speed is ess than the line speed only applies to MPTC and MPTT configurations Use this configuration option when using multipoint rate adaption or when the transmit data rate must match the received data rate or the tributary DSU is configured as a digital sharing device DSD Enab Select when multipoint rate adaption is enabled and when a multipoint network is configured for nondisruptive diagnostics Diag Type is set to NonD and a symmetrical port speed is required for proper DTE operation When disabled the receive port rate on the control will be the DDS rate and the transmitter will be the port rate minus the diagnostics 3550 A2 GB 20 20 December 1996 5 11 COMSPHERE 3550 Series Data Service Units Table 5 6 1 of 4 DBM Configuration Options Rate Kbps 9 6 Next 14 4 12 0 9 6 4 8 2 4 Prev DBM Rate Sets the initial data rate in kbps of the DBM for backup calls over the dial circuit 14 4to Select the data rate for V 32bis modulation The rate 14 4 is not displayed if you have a 12 0 kbps DBM 4 8 kbps 2 4 Select for V 22bis modulation PrtSp Kbps 9 6 Next 14 4 12 0 9 6 4 8 2 4 1 2 Disab Prev Port Speed not displayed with
102. emote branch Only available to a DSU configured as a control or a point to point tributary Messages branch Only appears when a message from the NMS is waiting Once the message is cleared this branch no longer appears Local Remote Menu Subbranches The Local branch menu has five subbranches the Remote branch menu has four A 4 The Status Stat branch provides reports on the health and status of the DSU and DBM the DTE interface the identity of the DSU and DBM the status of the connected DTE s EIA 232 and V 35 interfaces and if there is a dialed connection the quality of the dial network circuit If a TDM Flex is installed its status is integrated into the DSU s Status The Backup Bckup branch controls the operation of the dial backup feature This branch is available if a DBM or an external dial backup unit DBU is installed Only available from the Local branch The Test branch provides extensive testing capabilities for the DSU the DDS circuit the DBM if installed and the backup circuit if there 15 a backup call established Zf a TDM Flex is installed testing is available on a per port basis NOTE the Test branch does not appear the DSU is in Display mode values can be read but not changed Only authorized persons can change configuration option values for the DSU Contact your System Administrator for further information e The Configuration Confg branch provides the abil
103. eration but no port is configured for underspeed Configure the synchronous port to underspeed via the appropriate path DSU or DBM in the PrtSp submenu 10BPC amp 2 Stops An attempt is made to configure the asynchronous character format for 10 bits per character plus 2 stop bits Two stop bits are not allowed when there are10 bits per character Select 1 for Stop Bits via the appropriate path Prt1 or Prt2 in the MUX submenu Too Many Ports The Lowest Port Number and Number of Ports in Group specifications for a digital sharing group cannot be realized Select new specifications for the digital sharing group via the Setup path in the MUX submenu 3550 A2 GB20 20 December 1996 C 13 Pin Assignments OvervieW oe Soho eR eS ORES Overview Pin assignments for the 3550 Series DSU connectors and interfaces are included here Refer to them as needed Figure D 1 shows the Model 3550 DSU s digital network connector which is used for DDS connection Table D 1 provides its pin assignments Table D 2 provides the network connector pin assignments used for the V 32 DBM which uses a 6 pin jack not shown in any figure Figure D 2 shows the 3600 Hubbing Device Table D 3 shows its pin assignments Table D 4 provides the 3600 Hubbing Device s CC IN DC OUT jack pin assignments Figure D 3 shows the Model 3551 DSUs rear connector plate Table D 5 provides the EI A 232 V 24 con
104. ere is no dialed connection The DDS circuit is active and carrying user data and diagnostics In Standby mode the unit has a dialed connection to another DBM or compatible dial backup unit but the DDS circuit is still active and carrying user data The dialed digital circuit carries diagnostic traffic addressed to either the tributary DSU or DBM These diagnostics do not disrupt the DDS circuit In Dial Backup mode the dialed circuit is active and carrying user data and diagnostics In External Backup mode the external DBU is the DSU s alternate connection with the remote device Depending upon how the DSU is configured the external DBU will either establish the dialed connection ExtBU set to Orig or respond to an incoming call ExtBU set to Ansr Once 6 dialed connection 15 established the DSU switches data and diagnostics to the dialed link then drops backup when service is restored Table 4 2 lists the Backup branch operating modes and explains the effects of each backup command December 1996 4 7 COMSPHERE 3550 Series Data Service Units Table 4 2 Backup Branch Menu Selections Current Backup Backup Mode Command Dial out establish and switch to dialed link Dial Backup mode Dial out and establish dialed link Standby mode Data is routed over the DDS circuit Standby Disconnect dialed link Idle mode Switch data to dialed link Dial Backup mode Dial Backup Disconnect dialed
105. eries Data Service Units Tributary DSU Addressing Tributary DSU addresses are user definable but take care to ensure that their addresses are unique on a multipoint circuit If two tributaries are assigned the same address you will not be able to communicate with either one The control DSU accesses its tributary by specifying the tributary s address The 6700 Series NMS accesses the DSU via its network address To access a tributary DSU the NMS first addresses the control then the tributary An address issued from the NMS takes the format of control channel control network address tributary network address This is called link level network addressing Figure 3 5 shows an example of DSU and DBM addressing as well as link level network addressing Refer to Chapter 4 to learn how to set the DSU s network address CONTROL 6700 SERIES NMS CONTROL CHANNEL 1 ofa E es 1 DSU WITH DBM DSU ADDRESS 1 157 DBM ADDRESS 1 158 Verifying Operation and Testing Connections Verification testing should be performed after any installation After installing and configuring the circuit including control and tributary DSUs the DDS network the DBMs and their dial connections perform a series of tests from the control DSU to verify network operation using either the SDCP or NMS TRIBUTARIES DSU WITH DBM DSU ADDRESS 1 157 1 DBM ADDRESS 1 157 2 DSU WITH DBM DSU AD
106. es not exceed the primary aggregate speed set in Rate Kbps in the DBM option set If the sum of the port soeeds equals the primary aggregate rate an underspeed port selection is required Underspeed Disab Next Disab Prtt Prt2 Prev Underspeed Port Selects which port is to run slightly underspeed to allow for in band framing and in band secondary channel transport if used If more than one port is active and the sum of the port speeds equals the primary aggregate speed then one synchronous port must run underspeed The number of bits per second used for in band framing is 10 The in band secondary channel transport speed is set in 2nd Chan bps and if used includes the 10 bps in band framing A port used for asynchronous operation may not be set for underspeed NOTE When Port Cntrlis set to DSD or Share DeVA is enabled in the MUX Setup option set port speeds are only counted once per DSD when calculating used bandwidth Disab No port runs underspeed during primary operation Prtt or Selected port runs underspeed during primary operation Prt2 5 28 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 14 Port Speed External DBU Configuration Options Prti 9 6 9 6 Next 64 56 48 28 8 19 2 14 4 9 6 4 8 2 4 1 2 Disab Prev Port 1 Speed Primary data rate in kbps on Port 1 Must be set to the same value in the external DBU 64to __ Select to set the port s operating rate 1 2 kbps Disab Se
107. esp Period The range that can be entered is from 5 seconds up to 10 minutes Link Delay Os Next Os 1s 2S 5s 10s 20s 205 Prev Link Delay specified in seconds only displayed when any Diag Type is set to NonD LinkConfig is set to Pt Pt and Full Mode is enabled Used only in point to point configurations this configuration option controls the amount of additional time that a DSU or DBM will wait for a response from a device downstream only applies to a PTPC configuration NOTE lf diagnostic time outs are occurring during polling increase the link delay to the next higher setting Os to 50s Set the number of seconds the DSU or DBM will wait for a response from the downstream device The range that can be entered is from 0 seconds up to 50 seconds Packet Delay Os Next Os 1s 2s oS Prev Packet Delay specified in seconds only displayed when Position is set to Cntrl and Full Mode is enabled Used only for a control DSU or DBM this configuration option controls the amount of time that a DSU or DBM will wait for a packet to complete from an NMS NOTE Must be used when the DSU s diagnostic channel operates over packet switch satellite communications or other facilities that provide extended throughput delays Osto5s the amount of time the DSU or DBM will wait for the NMS The range that can be entered is from 0 seconds up 10 5 seconds M PtSymPrt Enab Next Enab Disab Prev Multipoint Symmetrical Port only display
108. etting Function ON Permissive V 32 DBM transmit output level of 9 dBm S1 1 default Programmable V 32 DBM transmit level between 12 dBm and 0 dBm Frame ground FG connected to signal ground SG ON SG Off FG connected to SG through 100 ohm resistor default ON is to the rear as you face the front of the DSU Off is to the front 3550 A2 GB20 20 December 1996 2 3 COMSPHERE 3550 Series Data Service Units Where to Place the DSU As mentioned earlier the DSU must be placed within 6 feet of a dedicated grounded ac outlet that 15 protected by a circuit breaker The distance between the DSU and its DTE must be within EIA 232 D V 24 limits or V 35 limits if operating the DSU at speeds greater than 19 2 kbps For the EIA 232 connector the typical maximum distance is 50 feet at speeds less than or equal to 19 2 kbps If a longer distance is needed use high quality low capacitance cable and ensure that the effective shunt capacitance of the circuit measured at the DSU and including the capacitance of the cable and the DTE does not exceed 2500 picofarads as specified in EIA 232 D For the V 35 connector the maximum distance recommended between the DSU and the DTE is nominally 1000 feet Allow 1 to 2 feet of clearance around the DSU for access and cable connections during installation 2 4 1 g Or n LOW VOLTAGE Sif AC POWER IN Installing the DSU Before installing the DSU
109. example 15 included to illustrate DCP s operation Editing Configuration Values To edit or change configuration options 2 Procedure 1 Select Local or Remot Remote and the remote DSU s network address 2 Select Confg Configuration branch Press the gt key key until Confg appears then press the function key F1 F2 or F3 directly below Confg 3 Select Opts Configuration Options 5 2 December 1996 The first line of each configuration option identifies the option and its current setting If configuration data has been corrupted will appear in place of the current value If this occurs reset all configuration options along with the network address If a DBM 1s installed check the Backup Directory entries the poll list and the DSU s local telephone number as well The second line displays all values that are available for selection three at a time one above each function key Press the lt or key to scroll other selections into view Press the function key F1 F2 or F3 directly below a value to select it Select Next to proceed to the next option Select Prev to return to a previous option Press the A key to return to the Edit Save submenu or screen and select the next option set to be edited 3550 A2 GB20 20 Saving Configuration Options CAUTION Be extremely careful when saving configuration options to avoid saving them to the wrong loca
110. f Diag Type Disr Next NonD Disr Diag Type NonD Next NonD Disr Chang Diag Opts DSU DBM Gen JG Edit Save SAVE DSU Diag Edit Save DSU Diag DBM 1 December 1996 Edit Save Diag DBM 36 1 2 DTE Port EIA232 Next EIA232 V 35 DTE Port V 35 Next ElIA232 V 35 2 F3 1 Activ Usr1 PTPC Save to Usr1 Please wait Le Le Le Save to Usr1 Command Complete 3550 A2 GB20 20 DSU 9 6 1 Remot Port 1 Local This example is now complete Configuration Option Tables This section contains a table for each option set that can be found under the Configuration Confg branch in the order in which it appears in the menu Each table lists all configuration options available within the option set when Menu mode is enabled Menu subbranch Full Mode Enab Appendix B provides Configuration Worksheets that summarize the configuration options when Menu mode is enabled as well as when it is disabled This chapter includes the following option set tables 3550 A2 GB20 20 DSU Configuration Options Table 5 1 Diagnostic DSU Configuration Options Table 5 2 Diagnostic DBM Configuration Options Table 5 3 Diagnostic External DBU Configuration Options Table 5 4 Diagnostic General Configuration Options Table 5 5 DBM Configuration Options Table 5 6 External DBU Configuration Options Table 5 7 General Config
111. f five minutes elapse without a key being pressed the Device Health and Status screen is redisplayed e When the digital circuit is the active link The first line displays a running normal operation timer hh mm ss The second line displays the DSU s operating rate and can also display one or more of the test or alarm messages e An asterisk appears at the far right to indicate NMS activity e right arrow appears just before the asterisk if there is more than one message Press the Key to see the next message 3550 A2 GB20 20 Expanded Health and Status Expanded Health and Status Expan only appears during automatic dialing It retrieves Health and Status information for the local DSU after an automatic backup attempt has failed or when there is a disconnect after a successful connection If the right arrow appears to the right of Expanded H S there is more than one message Press the gt gt key to see the next message Subnetwork Health and Status Subnetwork Health and Status Subn displays status information from a DSU s subnetwork all DSUs and DBMs assigned to that DSU s active poll list The downstream network addresses and current statuses are listed To page through tributary addresses e Press the F1 key T for the next highest network address e Press the F2 key 4 for the next lowest network address DTE Status The DTE status subbranch provides a sna
112. from one of the default factory loaded option sets stored in the PTPC PTPT MPTC or MPTT DBM Device Fail Internal failure is detected in the DBM DBM Disable DBM transmitter is disabled DBM is in Idle mode but no calls can be initiated or answered nn nDBM mode nn n indicates the DBM speed mode is one of the following Standby A dialed connection is made but the data is still routed over the DDS circuit The first line shows the dial backup connection time Active Adialed connection is made and data has been routed over that line nn nExternBU nn n indicates the external DBU s speed External Backup is in progress on an external DBU DDS line is Bkup disabled DBM Test test init The DBM is running a test initiated from init test is one of the following tests BERT Bit Error Rate Test BiL Bilateral Loopback Dev Device Test DL Digital Loopback DT Digital Test DTE DTE Loopback E E End to End Test Lamp Lamp Test RL Remote Digital Loopback TM Test Mode initis one of the following initiators DTE Data Terminal Equipment FP Front Panel the DCP NMS Network Management System Remt Remote DSU 3550 A2 GB20 20 December 1996 C 3 COMSPHERE 3550 Series Data Service Units Table C 3 2 of 3 Device Health and Status Messages Message Condition Dial Tone Fail Dial tone test was enabled and test failed
113. hat is connected to the local DSU s DTE interface A test message from the external device is looped back from the receiver to the transmitter in the remote DSU and returned to the local DSU In Remote Digital Loopback the local DSU control or tributary puts the remote DSU into Digital Loopback A control DSU can originate Remote Digital Loopback in a 4 10 December 1996 point to point or multipoint network whereas a tributary DSU can originate Remote Digital Loopback in a point to point network only When a DSU control or tributary originates Remote Digital Loopback both the originating DSU and the targeted DSU enter Test mode No other test can be run at the originating DSU or the targeted DSU until the Remote Digital Loopback is aborted The DSU does not generate test results Bilateral Loopback Bilateral Loopback Bilat Lpbk is a combination of DTE and Digital Loopbacks operating simultaneously in the same DSU Both Bilateral and Digital Loopbacks are selected from the General Gen option set NOTE If Bilat Lobk is enabled requesting a Remote Digital Loopback or Digital Test will automatically initiate a DTE Loopback as well Digital Test The Digital Test DT checks the functionality of a pair of DSUs and the data circuit between them This test can also be run on a DBM over a backup connection to a remote DBM for point to point testing The remote DSU is placed in Digital Loopback then the local D
114. he Clr selection resets the counter to 0 DSU DBM Rx Blk err Local and remote DSU DBM Tx Bik err Local and remote DSU DBM Number of incoming blocks with errors detected indicating a fault in the incoming transmission path The Clr selection resets the counter to 0 Number of blocks with errors detected at the remote DSU indicating a fault in the outgoing transmission path The Clr selection resets the counter to 0 Rx TimOuts Local DSU DBM only Number of blocks that were not received or acknowledged by the remote DSU or DBM The Clr selection resets the counter to 0 1 Local refers to the test initiator 3550 A2 GB20 20 December 1996 4 11 COMSPHERE 3550 Series Data Service Units Table 4 5 Bit Error Rate Test Results Results Information Displayed Time Running test timer The Clr selection resets the timer to 0 00 00 Tot Error Running count of bits in error Max if the maximum error count has been reached which is 64000 The Clr selection resets the counter to 0 Err Secs Running count of errored seconds Errored second is at least one error is detected during a 1 second time period The Clr selection resets the counter to 0 Port selected for testing Run on port nn Lamp Test The Lamp Test is a test of the status indicators LEDs and liquid crystal display LCD on the DSU s control panel both models Any indicator that does not flash 15 not functio
115. he DSU s V 35 Interconnect Cable to the bottom DTE connector of the rear connector plate Tighten the screws on each side of the connector b Connect the 34 pin end of the DSU s V 35 Interconnect Cable to the V 35 interface cable then tighten the screws on each side of this connector REAR CONNECTOR PLATES i MODEL 3551 DSUs Pe gt 0 57 9 16 P26 P25 P20 P19 a J1 10 11 SLOTS 1 P23 1121 o Installing the Model 3551 DSU The installed DSU is connected to the DDS network through the 50 pin connectors at the rear of the carrier These interfaces are specified in the USOC RJ48T and the pin assignments are shown in Appendix D Proper network connection to the DDS facility or to the network channel terminating equipment must be made at the far end of the cable If the network line and remote DSU are installed and tested do a Remote Loopback a Test Pattern test If the Front Panel test switch strap 15 to be disabled slide the DSU slightly out of the carrier open switch S3 1 then reseat the DSU into the carrier Do this now Circuit ID information can be written on the cover plate under the appropriate slot number 25 PIN V 35 CONNECTOR FERRITE CHOKE V 35 INTERCONNECT CABLE 34 PIN CONNECTOR V 35 INTERFACE CABLE 494 14464 Figure 3 4 V 35 Interconnect Cable Installation 3550 A2 GB20 20 December 1996 3 7 COMSPHERE 3550 Series Dat
116. he DSU circuit card The DBM provides the following features 9 Miultispeed point to point backup The DBM provides point to point service over the 2 wire dial network Backup rates available are 2 4 4 8 9 6 12 0 and 14 4 kbps e Independent operation Although the DBM is installed on the DSU the two are configured separately and most tests can be run on either independent of the other e g you can run a test on the DBM while a test is running on the DSU e Security There are four levels of call setup security None Password Callback and Alarm e Management control Dial backup can be initiated from a 6700 Series NMS the DSU s DCP or it can be initiated automatically by the DSU DBM e Automatic setup and restoration When configured for automatic backup the DSU DBM initiates dial backup when it detects a failure in the network then restores the data path to the DDS circuit when the network returns to service 3550 A2 GB20 20 2 Port TDM Flex The 2 port TDM Flex is a separate circuit card that attaches to the Model 3550 DSU It allows independent ports to share one standard digital point to point facility The 2 port TDM Flex provides the following features e Port capacity This feature permits the DSU to operate as a digital sharing device and provides two independent ports Port 1 is on the DSU and Port 2 is on the 2 port TDM Flex Either port can operate as an EJA 232 or V 35 interface 9 Multiplexing Wi
117. he message Command Complete Device Test The Device Devic Test uses a test pattern generator built into the DSU Ifa DBM is installed the DBM must be in Idle mode with no call in progress if you want to run a Device Test Operating the DSU NOTE On power up the DSU sends out polls to determine whether a DBM is installed It then initiates a Device Test on itself and the DBM The results of the tests appear momentarily on the DCP s LCD Loopback The Loopback Lpbk branch displays four loopbacks e Local Loopback LL 9 DTE Loopback DTE e Digital Loopback DL e Remote Digital Loopback RL Figure 4 3 shows where each loopback occurs on the circuit Refer to the figure as you read about loopbacks Local Loopback Local Loopback LL is session disruptive that is performing the test will disrupt data It permits the DTE to run a test to determine whether the DTE connection to the DSU and the DSU itself are functioning properly The DSU must be connected to the DTE but the network connection to the DSU is not required This test cannot be performed by the DBM While the DSU is in Local Loopback any data transmission by the DTE is returned as received data An operator can send a test pattern and verify correct reception of the test The DSU does not monitor this testing 494 1 4468 Figure 4 3 Loopbacks 3550 A2 GB20 20 December 1996 4 9 COMSPHERE 3550 Series Data Service Units NOTE To is
118. he same circuit should be set the same e g if the control is set to Disr all its tributaries should also be set to Disr Disr Select disruptive diagnostics for diagnostic data to be carried between the control and the tributary DSUs over the same primary channel as user transmitted data User initiated commands are sent between the control and the tributary DSUs disruptively interrupting data Select none if only local diagnostics are to be allowed that is there will be no diagnostic communications with remote devices Table 5 5 1 of 2 Diagnostic General Configuration Options Position Cntrl or Trib Next Trib Prev Network Position This configuration option determines the DSU s position in the network as well as its test and diagnostic capabilities Cntr Select the DSU is a control PTPC or MPTC configuration Trib Selectif the DSU is a tributary PTPT or MPTT configuration LinkConfig Pt Pt or M Pt Next Pt Pt M Pt Prev Link Configuration Used to define a point to point or multipoint circuit this configuration option is required for proper testing dial backup unit operation and is required when using nondisruptive diagnostics Pt Pt Select for a point to point configuration PTPC or PTPT configuration M Pt Select for a multipoint configuration MPTC or MPTT configuration Resp Period 1 Next 1 10 Prev Response Period only displayed when any Diag Type is set t
119. her EI A 232 or V 35 the default setting 15 EIA 232 EIA 232 D V 24 INTERFACE VOLTAGE AC POWER IN EIA 232 INTERFACE PORT 2 494 14459 Figure 2 7 Installing Cables 2 10 December 1996 3550 A2 GB20 20 Connecting Port 2 For the EIA 232 cable install as described above For the V 35 cable install the V 35 Interconnect Cable then the V 35 DTE cable as follows refer to Figure 2 7 2 Procedure 1 Reconfigure the port to match the interface 35 in this example 2 Connect the 25 pin plug end of the V 35 Interconnect Cable feature number 3000 F1 510 to Port 2 Tighten the holding screws 3 Connect the plug end of the 34 pin V 35 DTE cable to the other end of the V 35 Interconnect Cable Tighten the holding screws 4 Connect the other end of the DTE cable to the appropriate port on the computer or DTE Tighten the holding screws Refer to Chapter 4 to learn how to reconfigure the DSU s port s Verifying Operation and Testing Connections Verification testing should be performed after any installation After installing and configuring the circuit including control and tributary DSUs the DDS network the DBMs and their dial connections perform the following series of tests from the control DSU to verify network operation using either the DCP or NMS Verifying Network Addresses Access the DSU s identity ID subbranch for each tributary DSU t
120. ibility to add them later without having to reconfigure your entire network 3550 A2 GB20 20 Tributary DSU Addressing Tributary DSU addresses are user definable but take care that their addresses are unique on a multipoint circuit If two tributaries are assigned the same address you will not be able to communicate with either one The control DSU accesses its tributary by specifying the tributary s address The 6700 Series NMS accesses the DSU via its network address To access a tributary DSU the NMS CONTROL 6700 SERIES NMS CONTROL CHANNEL 1 2 7 7 DSU WITH DBM e DSU ADDRESS 1 157 DBM ADDRESS 1 158 Installing the Model 3550 DSU first addresses the control then the tributary An address issued from the NMS takes the format of control channel control network address tributary network address This is called link level network addressing Figure 2 6 shows an example of DSU and DBM addressing as well as link level network addressing Refer to Chapter 4 to learn how to set the DSU s network address TRIBUTARIES a DSU WITH DBM DSU ADDRESS 1 157 1 DBM ADDRESS 1 157 2 Se OOOO 7 DSU WITH DBM DSU ADDRESS 1 157 79 DBM ADDRESS 1 157 80 494 14454 Figure 2 6 Addressing Example 3550 A2 GB20 20 December 1996 2 9 COMSPHERE 3550 Series Data Service Units Connecting the DSU to a DTE The DSU s r
121. ibutary DSUs can receive messages 2 Select Clear F2 The message is deleted and Msgs no longer appears over the F3 key 40 December 1996s 35 2082 20 Front Panel DCP Security NOTE This page can be removed to prevent unauthorized persons from learning about the security access levels and their selection The Model 3550 diagnostic control panel DCP and Model 3551 shared diagnostic control panel SDCP have two levels of security access as shown in Table 4 8 Table 4 8 Security Access Levels Security Access Level Unlock Functions Available Local branch only e Status branch e Configuration branch Display only no changes e Control branch Display External Leads only no changes The 3550 Series DSUs are shipped from the factory with the security level set to Unlock When the DCP is locked only the Local branch appears on the control DSU 3550 A2 GB20 20 Operating the DSU If the security has not been set on the DCP before the following appears FP Access 27 Lock Unlock Save E To select the security level 2 Procedure 1 Press the key to ensure that you are at the top level menu 2 Press the lt I and keys simultaneously for three seconds The following menu appears FP Access Unlock Lock Unlock Save fay vj fel le 3 Select the security level Lock To restrict access Unlock To provide full access Press
122. isab Prev Multiple Calls only displayed when Full Mode is enabled and a DBM is installed Used primarily for multipoint dial backup this configuration option selects the multiple calling cycle in which the DBM steps through the Backup Directory attempting to call each valid telephone number in the directory or selects the normal calling cycle This configuration option only has an effect if Auto Bckup is set to Enab Enab Selectif the multiple calling cycle is to be used The DBM makes one attempt to call the telephone number in the specified Backup Directory default is the first telephone number in the directory If the attempt fails the DBM makes an attempt to call the next telephone number in the specified directory and so on until either a call is completed or the DBM cycles through all the telephone numbers in the Backup Directory ignoring blank entries The DBM then waits five minutes and begins the calling cycle again until the TriesTimeOut period expires Select if the normal calling cycle is to be used three call attempts a 5 minute wait three more call attempts another 5 minute wait etc until the Tries TimeOut period expires Multicall must not be enabled unless successive telephone numbers in the Backup Directory are different In addition duplicate telephone numbers should be avoided These precautions prevent the DBM from making excessive call attempts to the same telephone number 5 22 December 1996 3550 A2 GB20
123. its data rate to a low speed application while operating over the high speed DDS circuit e LADS operation The DSU can operate as a local area data set LADS sometimes called a limited distance modem or LDM at 2 4 4 8 9 6 19 2 38 4 56 or 64 kbps e Single Port Async Sync The single port asynchronous to synchronous feature makes it possible to send asynchronous data over the synchronous network e Nondisruptive Diagnostics When set up to use nondisruptive diagnostics the DSU sends diagnostic data without interrupting or disrupting customer data e NMS control The DSU can be controlled by COMSPHERE 6700 Series NMS The 6700 Series NMS operates using Advanced Diagnostic protocol ADp The Model 3550 DSU requires a hubbing device for connection to the NMS the Model 3551 DSU is connected to the NMS through the shared diagnostic unit SDU in the COMSPHERE 3000 Series Carrier 3550 A2 GB 20 20 December 1996 1 1 COMSPHERE 3550 Series Data Service Units e Diagnostic Control Panel control The Model 3550 DSU 15 controlled from its diagnostic control panel DCP The diagnostic control panel for the Model 3551 DSU called a shared diagnostic control panel SDCP is installed in the 3000 Series Carrier Both control panels display information about the DSU on a 2 line 16 character liquid crystal display LCD and through light emitting diode LED status indicators NOTE Except where a distinction is made
124. ity to customize DSU software configuration options to enter and change telephone numbers if a DBM is installed to change the DSU network address and to specify the menu mode for displaying configuration options of the unit e The Control Ctrl branch provides the ability to display and change external leads and enable or disable the DSU or a DBM or TDM Flex when installed When a TDM Flex is installed the circuit designation status indicators TXD RXD etc reflect the status of a selected port Each selection leads to a functional subbranch of the menu Only three menu selections appear at a time one over each function F1 F2 F3 key Press the lt 1 and keys to scroll backward or forward through menu selections e Press the A key to go to the previous screen menu display e Press 6 key to return to the starting point the top level menu Refer to Chapters 4 and 5 for additional DCP operation information December 1996 3550 A2 GB20 20 Configuration Worksheets OvervieW s ace eo oe 4S Eo ee OEE OOOH 11 8815 41 1 9 Overview Configuration Worksheets summarize the DSU s software configuration options and the selections that can be set for each The Configuration Option Tables in Chapter 5 provide further explanation of each configuration option should you need to change settings as well as an example showing how to change or edit these options This appen
125. l When selected LSD only goes Off after repeated call attempts fail and the period of time set in Tries Time out in the Backup option set expires Make sure that Auto Backup in the Backup option set is enabled FrcOn Select to keep LSD on as long as the DSU has power DSR FrcOn Enab Next Enab Disab Prev Data Set Ready Forced On only displayed when Full Mode is enabled and a TDM Flex is not installed Provides the ability to override any other options controlling the DSR lead Enab __ Select for DSR to remain ON as long as the device is working regardless of any tests or network alarms Disab Select if DSR is to function as an active lead reflecting various test and alarm conditions SystemStat Enab Next Enab Disab Prev System Status only displayed when Full Mode is enabled Controls the behavior of the DSR lead in response to a No Signal Out of Service or Out of Frame alarm from the network Enab Selectif a network alarm is to turn DSR Off Disab Selectif a Model 3551 DSU with a V 32 DBM that is configured with its Primary Core configuration option set to Yes DBM option set is part of your network configuration When selected a network alarm will not affect DSR DSR on Tst Enab Next Enab Disab Prev Data Set Ready On in Test only displayed when Full Mode is enabled and a TDM Flex is not installed Controls the behavior of the DSR lead during testing Enab Select so that DSR is ON
126. l Mode is enabled Controls whether the DBM answers incoming calls Enab Selectif the DBM is to automatically answer incoming calls Disab Select if the DBM is not to automatically answer incoming calls TxElasStor Disab Next Enab Disab Prev Transmit Elastic Store only displayed when Full Mode is enabled and a TDM Flex is not installed Using a transmit buffer on the DBM s transmitted data TXD lead serial data is clocked into the DBM s elastic store using clock provided by the extended circuit received clock lead The DBM s own system timing is used to clock data out of the buffer Transmit Elastic Store is reset each time the unit powers up the buffer overflows or after the RTS lead makes an Off to ON transition Enab Select enable when interfacing with a DCE that receives clock from its own network source e g a T1 MUX or DSU that is on the DDS network Disab Select disable if you do not have an extended network or are providing the clock source to the extended network e g LADS with external clock RxElasStor Disab Next Enab Disab Prev Receive Elastic Store only displayed when Full Mode is enabled The DBM receives data using a receive data buffer on the DBM s received data RXD lead This configuration option only supports single port DBMs configured for disruptive diagnostics Diag Type is set to Disr and no rate adaption when Rate Kbps is equal to PrtSp Kbps Both the control and tributar
127. lect to disable the port Option Verification For all ports the DSU verifies that the sum of the individual port speeds does not exceed the primary aggregate speed set in the external DBU s Rate Kbps configuration option If the sum of the port speeds equals the primary aggregate rate an underspeed port selection is required Prt2 9 6 9 6 Next 64 56 48 28 8 19 2 14 4 9 6 4 8 2 4 1 2 Disab Prev Port 2 Speed Primary data rate in kbps on Port 2 Must be set to the same value in the external DBU 64to __ Select to set the port s operating rate 1 2 kbps Disab Select to disable the port Option Verification For all ports the DSU verifies that the sum of the individual port speeds does not exceed the primary aggregate speed set in the external DBU s Rate Kbps configuration option If the sum of the port speeds equals the primary aggregate rate an underspeed port selection is required Underspeed Disab Next Disab Prtt Prt2 Prev Underspeed Port Selects which port is to run slightly underspeed to allow for in band framing and in band secondary channel transport if used If more than one port is active and the sum of the port speeds equals the primary aggregate speed then one synchronous port must run underspeed The number of bits per second used for in band framing is 10 The in band secondary channel transport speed is set in 2nd Chan bps and if used includes the 10 bps in band framing A port used for asynchro
128. lid fora DSU with a DBM because of the reserved 192 broadcast address 255 Invalid fora DSU with a DBM C 4 December 1996 3550 A2 GB20 20 Status Indicators and Control Panel Messages Table C 3 3 of 3 Device Health and Status Messages Message Condition MUX Device Fail Internal failure in the TDM Flex is detected MUX CommunicFail No reply from TDM Flex The DSU periodically polls the TDM Flex for health and status When the DSU does not receive a response the message MUX CommunicFail appears in the Health and Status report Prtnnn Disable Transmitter at port nnn 01 or 02 or All is disabled Go to the Control branch to enable the port Portnnn DTR Alarm The DTR lead at port nnn 01 or 02 or All has been Off for more than 30 seconds Prtnnn StreamTerm Streaming terminal DTE at port nnn 01 or 02 or All has its RTS lead turned ON longer than the predefined time Pnnntst test init The DSU is running a test on port nnn 01 or 02 initiated from init test is one of the following tests BERT Bit Error Rate Test DL Digital Loopback DT Digital Test DTE DTE Loopback RL Remote Digital Loopback TM Test Mode initis one of the following initiators DTE Data Terminal Equipment FP Front Panel the DCP NMS Network Management System Remt Remote DSU Redun Fan Alarm Indicates a problem with the fan on the 48 Vdc Central Office Power Unit
129. link and switch to private line Idle mode Switch data to DDS Standby mode External Backup If ExtBU in the ExtBU option set is set to Orig this command is displayed Idle mode Select this command to establish a backup call When the backup call is established the DSU switches data to the dialed link Disconnect dialed link and switch to private line Dial Backup mode Manual Backup 5 Select Dial F2 the DBM places the call You can control each step of a backup attempt by 6 Once the dialed call has been established select following one of these procedures Dial to switch data to the dial path Placing a Backup Call Manual DDS Restoration To place a backup call Data can be switched back to the DDS circuit once DDS service has been restored 2 Procedure 2 Procedure 1 Go to the Bkup option set under the Confg branch and set Auto Bckup to Disab 1 From the Bckup branch select DDS to restore data traffic to the DDS circuit 2 Select Bckup Backup branch to select a telephone number from the Backup Directory 2 Ifthe DDS circuit operates normally after the switch select DrBU to drop the backup circuit If the telephone number in the Backup Directory is the number you want to dial go to Step 5 3 Ifthe DDS circuit fails to perform reliably select Dial again to quickly route data back over the 3 Select Dial the Backup Dir screen is displayed dialed connection identifying the Backup
130. llow these steps Refer to Appendix A as you perform the procedures described in this guide Refer to Chapters 4 and 5 for additional examples and procedures 2 Procedure 1 2 3 3550 A2 GB20 20 Press the key to return to the top level menu Select Local F1 key Press the gt key to scroll the Confg Configuration branch into view Press the function key directly below Confg Press the F1 key to select Opts Configuration Options The Load from screen appears Installing the Model 3550 DSU 6 Press the gt key to bring the factory loaded unit configurations into view and select the appropriate configuration e PTPC for a point to point control e PTPT for a point to point tributary 9 MPTC for a multipoint control 9 MPTT for a multipoint tributary 7 Press the F1 key to SAVE the selected configuration The Save to screen appears 8 Save the selected configuration to Activ F1 key 9 Press the key to return to the top level menu then select Local again 10 Select Test F3 The Run Test on screen appears 11 Select the device that Failed the DSU or the TDM Flex or DBM 12 Press the F2 key to run the Device Test again The device should pass 13 Should the device fail call your service representative see Chapter 1 Connecting to the Network The DSU provides three interfaces often called a Jack One jack connects the DSU to the 6700 Series NMS one conne
131. lure alarm dial backup error messa external ages C 10 mode See ai BD configuring cme 4 6 progress messages C 8 network connection connector pin assignments network connection 2 6 Dial Test Dial Tone Fail message C 4 DialBU message DialCN message DialTn message digital facility alarm loopback DBM test DSU test message C 4 port test message network connector pin assignments port test message results Dir Index 3 COMSPHERE 3550 Series Data Service Units Dir Empty DBM error message C 10 directory dial backup 4 17 entry and password characters Disab message Disabled DBM messa ge C 8 0 688 11 8 1914 2 displaying external leads 4 19 DL 4 10 DBM test DSU test C 4 port test Drop DTR Disc message DSD Speeds diff error message Wrong RTS error message DSR status indicator DSR Feo ee DSR on Tst DSU 1 1 Aggreg Exceeded error message compatibility 1 6 configuration options Device Fail message Disable message install Port Speed configuration options 5 27 switch settings Bo technical specifications DSU test Lamp DSUTst message DT DBM test DSU test port test DTE 4 5 4 10 connection DBM test C 3 initiator DSU test initiator interface 5 88 E loopback 4 10 DBM test message DSU test message port test message port test initiator
132. mber 1996 The full or unabbreviated name of the configuration option followed by a brief explanation of its purpose or function The selectable values for the configuration option which are listed with guidelines for when each should be selected 5 5 COMSPHERE 3550 Series Data Service Units Table 5 1 1 of 2 DSU Configuration Options Rate Kbps 9 6 Next 64L 56 38 4 19 2 9 6 4 8 2 4 Prev DSU Rate Sets the data rate in kops of the DSU which must be set to match the speed of the digital DDS circuit 64L Select for 64 kbps LADS operation 56to 110 match the speed of the DDS circuit 2 4 kbps NOTE Both the control and tributary DSUs must be set to the same value PrtSp Kbps 9 6 Next 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab Prev Port Speed not displayed with a TDM Flex installed Sets the speed of the DTE port interface The port speed is set to any value ess than or equal to the DSU Rate Kbps set above The DSU performs rate adaption if the port speed is set to less than the DDS rate 64to _ Select the DTE s port speed 1 2 kbps Disab Disables PrtSp Kbps TxClkSource DDS Next Int Ext Prt1 Prt2 DDS Prev Transmit Clock Source Specifies the transmit timing source for the DSU Int Select internal clock source to take timing from the DSU Ext Select external clock source when timing is taken from the external Transmit Timing lead on Port 1 only not displayed if a TDM Flex is installe
133. menu is also an underspeed port A port cannot be the source of external timing and also run underspeed Correct the problem in one of two ways 1 Configure another synchronous port as underspeed via the appropriate path DSU or DBM in the PrtSp configuration submenu 2 Configure the other port to provide external timing Incmpt Diag mode Mixed diagnostic type is not compatible with point to point operation Select another diagnostic type via the Diagnostic DSU DBM or ExtBU option 561 Inval lowest Prt DCE the first port on TDM Flex was previously selected as the second port in a digital sharing group Select 1 as the first port for the digital sharing group via the MUX Setup path of the MUX submenu 3550 A2 GB20 20 December 1996 C 11 COMSPHERE 3550 Series Data Service Units previously selected as the source of external timing when the TDM Flex was enabled Now the TDM Flex is enabled Table C 10 2 of 3 TDM Flex Error Messages Message Condition Action Invalid timing A TDM Flex port Prt1 or Prt2 was Set TxClkSource to any of the valid timing sources external timing is set to Ext for the DSU or ExtBU and or the DBM Ext was previously selected as the source of external timing when the TDM Flex was disabled and the TDM Flex is now enabled Set TxClkSource to any of the valid timing sources external timing is set to Prt1 or Prt2 No 1 2 56K 6
134. mum number of retries has been reached Max appears Drop DTR Disc An established dialed connection fails because the DTR lead was turned Off Failn reason Because of failure in the DDS private line the DSU automatically originated several unsuccessful dialing attempts The last three dial attempts are reported as Fail oldest Fail2 and Fail3 most recent The reason for failed dial attempts include Abort Call User aborted call BadPermiss Adial attempt was made but a backup connection already exists Bad Phone Unassigned number or illegal characters Busy Line or network busy DBM Disab DBM disabled no call can be initiated or answered DTR Discon DTR disconnected No Answer There is no answer at the remote DBM or modem No Dial Tone No dialtone received from the network No Ringing DBM is not getting ringback from the other end Security Originating and answering DBMs have incompatible security levels or unmatched passwords Training V 32 modem training failure No Expanded H S There are no Expanded Health and Status messages Tries Timer an The number of minutes left in Tries Time out Timer 1 60 which is initially set to the time limit for dial backup call attempts If the timer has expired Exp appears C 6 December 1996 3550 A2 GB20 20 Status Indicators and Control Panel Messages Table C 5 S
135. n error was made in entering the address 2 Procedure 1 Press the A key to return to the Configure screen 2 Re select Addr and re edit the address 3 Select Save again Control Branch The Control Ctrl branch allows you to enable or disable the DSU s transmitter as well as the DBM s or port s and to display or change the status of the general purpose external DTE leads A DBM can be disabled if it is addressed from the Remote branch Transmitter Control The Transmitter Control TxCtl selection allows you to enable or disable the DSU s DBM s or port s transmitter DDS core When the DSU transmitter is disabled the following 15 possible 9 When a DSU is disabled it responds to tests Aborting a test clears the test but the unit remains disabled 9 A DSU in test clears the test when a disable or enable command is received e If an enable command is executed to a control from the NMS or the local DCP all disabled tributaries are enabled all tributaries in test are restored to Data mode When the local DBM is disabled the DBM does not originate or answer any calls until enabled 3550 A2 GB20 20 Operating the DSU LEDs The LEDs selection is only available from the Local branch This selection allows you to monitor the port at any given time When selected the port s lead activity is reflected in the DCP circuit designation status indicators TXD RXD etc on the faceplate
136. n external dial backup unit DBU or a carrier mounted dial backup unit With automatic backup the DSU automatically activates the DBM to reestablish a line when a facility alarm is detected from the DDS network A function of the DBM or external DBU whereby the DSU automatically returns to the DDS network when service is restored over the private line On point to point circuits the DSU test the integrity of the DDS network before switching data back to the private line See auto backup A combination of the DTE and Digital Loopbacks operating simultaneously in the same DSU This test is selected from the General configuration option set Bilat Lpbk Enab A test used to analyze the network circuit Both the control and tributary DSUs must be connected to the network The originating DSU sends a 511 bit test pattern transmitting over the DDS network for a DSU over the dial network for a DBM A method of transmission The simultaneous transmission to two or more communicating devices A device for temporary storage of data The directory entry in an originating DBM consists of the answering DBM s telephone number a delimiting character and a callback pointer The pointer identifies the originating DBM s telephone number in the answering DBM s Backup Directory The device for mounting circuit cards that contains 17 slots 1 control slot for an SDU and 16 slots for data communications devices like DSUs and modems A Model
137. n the signal is no longer acceptable Yes Select when you want to terminate the backup call when the carrier is lost No Never select for factory testing only Selecting No will cause an off hook line condition which will result in excessive telephone charges Auto Retrain Yes Next Yes No Prev Automatic Retrain only displayed when Full Mode is enabled Controls whether the DBM will start a retrain sequence automatically when received signal quality is no longer acceptable Yes Select if you want the DBM to retrain automatically No Select if you do not want the DBM to retrain automatically However the DBM will respond to a retrain request from a remote modem or DBM 5 12 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 6 2 of 4 DBM Configuration Options Single Rate Yes Next Yes No Prev Single Rate only displayed when Full Mode is enabled Determines whether the DBM will adjust its rate to resolve a rate mismatch with a remote DBM or modem with the following limitations NOTE Ifthe DBM Rate Kbps is set to 2 4 the DBM will only train at 2 4 kbps and can only talk to a 2 4 kbps modem regardless of how Single Rate is set Yes Select when you want the DBM to only operate at the rate for which it is configured No Select when you want the DBM to adjust its rate downward to correct a rate mismatch AutoAnswer Enab Next Enab Disab Prev Automatic Answer only displayed when Ful
138. nada and Canadian DOC rules How to Change Hardware Straps HANDLING PRECAUTIONS FOR STATIC SENSITIVE DEVICES This product is designed to protect sensitive components from damage due to electrostatic discharge ESD during normal operation When performing installation procedures however take proper static control precautions to prevent damage to equipment If you are not sure of the proper static control precautions contact your nearest sales or service representative The Model 3551 DSU has several hardware straps that control the permissive or programmable connection when a DBM is installed the Test Mode Indication leads and the external interface leads used with a 48 Vdc Central Office Power Unit Refer to Figure 3 1 to locate the switch and jumper locations If a DBM is installed refer to Table 3 1 to determine which switch needs to be changed if any Refer to Table 3 2 to determine whether these jumper straps need to be changed 3 2 December 1996 3550 A2 GB20 20 Installing the Model 3551 DSU SWITCH 1 TOP REAR 48 Vde ALARM MONITORING SHOWN DISABLED J13 5 5 12 TEST MODE INDICATION JUMPERS SHOWN ENABLED FACEPLATE 494 13746 04 Figure 3 1 Model 3551 DSU Switch and Jumper Locations Table 3 1 Model 3551 DSU Switch Settings ON Permissive V 32 DBM transmit output level of 9 dBm default Switch Position Programmable V 32 DBM transmit level between 12 dBm
139. nal Note that if all LEDs are functioning all the indicators on the Model 3550 DCP are flashing steadily In a COMSPHERE 3000 Series Carrier the indicators on the SDCP remain ON The LCD on the DCP or SDCP alternately flashes solid blocks moving from position to position on the display until the test is aborted Pressing any key except the A key will stop the LCD portion of the Lamp Test and return you to the DSU Test menu so you can abort the test Once aborted the LCD and LEDs stop flashing 4 12 December 1996 Configuration Branch The Configuration Confg branch allows you to configure or customize the DSU and its equipment DBM or TDM Flex to fit your site s requirements to enter and change telephone numbers if a DBM is installed and to specify the mode for viewing or editing configuration options The 3550 Series DSUs have two special features that simplify configuration of your DSU Menu mode and the preset factory set unit configurations to fit typical DSU applications It is recommended that you set the Menu mode before you select an application configuration or access option sets Selecting Menu Mode By selecting Menu from the Configuration Options Opts branch you can e View and configure options in each option set or e View and edit only those options that are more likely to change This feature saves time and simplifies customization of your DSU s configuration Appendix B Configuration
140. nection DDS or LADS eo DSU test initiator interface DDS switched loopback DSU test message Next 3550 A2 GB20 20 NMS compatibility 1 5 connection fi cure 2 6 control 1 1 DBM test initiator 3 DSU test initiator C 4 network connection port test initiator support No 1 2 56K 64K error message Answer DBM error message Answer failure message Dial Tone failure message Expanded H S message Response alarm C 2 Response error message Ringing DBM error messa ge C 10 Ringing failure fea led Signal alarm C 4 NoDialTone DBM error message nondisruptive diagnostics NoReps message ey Normal message Not in Menu error message NotConnected DBM error message C 10 notice to users D notices warning C Ntwk DSU test initiator NtwkTimOut number feature OK status indicator C 2 SDCP OnePrt no undspd error message operating modes 4 7 temperature operation asynchronous independent LADS 1 1 multispeed verification option sets overview 3 10 options submenu Opts Orig 4 7 3550 A2 GB20 20 December 1996 Index outbound Out of Frame Threshold alarm OutofFrameThresh message OutofServe alarm Out of Service alarm Overspeed 5 20 P Tst message Packet ai 5 11 packets 4 11 part number F 1 Password 4 6 password characters PCC Buffer Phone pin assignments CC
141. nector s pin assignments Figure D 4 shows the V 35 Interconnect Cable that is shipped with the rear connector plate it provides the interface between the port s D type connector and the DTE cable s V 35 connector Table D 6 provides the 25 pin V 35 connector and the V 35 Interconnect Cable s pin assignments 3550 A2 GB20 20 Figure D 5 shows the EIA 232 D crossover cable and its pin assignments and Figure D 6 shows the V 35 crossover cable and its pin assignments Refer to the COMSPHERE 3000 Series Carrier Installation Manual for additional pin assignments 490 8769a PIN 8 Figure D 1 Digital Network Connector December 1996 D 1 COMSPHERE 3550 Series Data Service Units Table D 1 Model 3550 Digital DDS Network 8 Pin Cable Connector Pin Assignments Pin Circuit 1 Transmit data to local loop Transmit data to local loop 2 7 T Received data from local loop 8 RO Received data from local loop Table D 2 Model 3550 Dial Analog Network 6 Pin Cable Connector Pin Assignments Pin Circuit Function 3 T Tip V 32 DBM Hubbing Device CC OUT DC IN CC IN DC OUT DO FIN f Ls 6 Inches Pin Overall Numbers 496 13775 03 Figure D 2 3600 Hubbing Device 3600 F3 300 D 2 December 1996 3550 A2 GB20 20 Pin Assignments Table D 3 3600 Hubbing Device Pin Assignments Pin Signal Name Input Output 2 DCOSD CCIRD Input 3 Table D 4 3600 Hubbing Device CC I
142. nous operation may not be set for underspeed NOTE When Port Cntrlis set to DSD or Share DeVA is enabled in the MUX Setup option set port speeds are only counted once per DSD when calculating used bandwidth Disab _ Select no port is to run underspeed during primary operation Prti or Select the port to run underspeed during primary operation Prt2 3550 A2 GB20 20 December 1996 5 29 Bea ee ha ee eee Menu SINCA ono 55 64 EE RRR R ERROR ES Top Level Menu 6 9 6 9 89 59 es Local Remote Menu Subbranches Overview This menu is your map through the DSU s various functions and pathways Compare it against the menus that appear as you move through procedures You will learn to quickly access where you want to go on the menu when operating the DSU This menu is also included on the Reference Card that comes with this guide which can be removed and placed with your DSU Menu Structure The DSU s operation is represented as menu selections that branch downward from its starting point the top level menu like the roots of a tree The menu is sometimes referred to as a menu tree Top Level Menu The top level menu is the starting point for all DSU operations You can always return to this point from anywhere in the menu by pressing the key Pressing this key immediately terminates any operation or work in progress 3550 A2 GB20 20 DSU Menu
143. ntage for extended range Extended range provides 2 3 overspeed in the DTE asynchronous data rate 5 20 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 9 1 of 2 Backup Configuration Options Auto Bckup Disab Next Enab Disab Prev Automatic Backup only displayed when a DBM is installed or an external DBU is configured to originate backup Controls automatic initiation of a call setup attempt to a remote DBM or modem when there is a failure of the DDS network Automatic dial attempts begin after the Network Time out expires Enab Select to initiate backup when there is a failure of the DDS network The DSU waits for a period equal to DDS Time out and if the DDS network is still down it attempts to establish a dial backup connection to the remote DBM Select so that no automatic dial backup connections are attempted Backup Dir 1 Next Chang Prev Backup Directory only displayed when a DBM is installed The DBM can store 10 telephone numbers or dial strings identified by the numbers 1 through 10 Selecting the Backup Directory identifier displays the telephone number stored in that directory Chang Select to enter or change the telephone number that is displayed FacAlOnCMI Disab Next Enab Disab Prev Facility Alarm on Control Mode Idle only displayed when Full Mode is enabled when a DBM is installed or an external DBU is configured to originate backup Determines whether the DSU treats a contr
144. o NonD or Mixed LinkConfig is set to M Pt and Full Mode is enabled Used for single port multipoint applications and applicable to tributary DSUs and DBMs only This configuration option determines how often health and status messages are transmitted which are transmitted each time the Request to Send RTS lead is raised Select if you want the tributary DSU to transmit health and status information every time RTS is raised not applicable for PTPC PTCT or MPTC configurations Select if you want the tributary DSU to transmit health and status information every other time that RTS is raised Select if you want the tributary DSU to transmit health and status information every 10th time that RTS is raised 5 10 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 5 2 of 2 Diagnostic General Configuration Options TribTimOut 0 10 Next Chang Prev Tributary Time out specified in minutes and seconds only displayed when any Diag Type is set to NonD or Mixed LinkConfig is set to M Pt and Full Mode is enabled This configuration option specifies the amount of time that the control DSU or DBM waits before it generates a Tributary Time out alarm when a tributary does not return a health and status message when RTS is raised only applies to a MPTC configuration Chang Determine the amount of time it takes for the control DSU to complete its polling cycle then multiply that time by the response period entered above R
145. o ensure that the DSUs are properly addressed Refer to Chapter 5 for an example using the DCP if needed C gt Procedure 1 Select Remot Remote branch 2 Enter the tributary s network address 3550 A2 GB20 20 Installing the Model 3550 DSU Select Stat Status branch Press the gt key until ID appears Select ID Press the gt key until Network Addr appears oes a aes R Verify that the correct address has been entered Repeat this procedure for each tributary DSU in the network Verifying the Network Perform a Digital Test on the DDS circuit to ensure that the network is functioning C gt Procedure 1 Select Test F3 Select DSU F1 Press the gt key until DT appears Select DT Select Start F1 Select a port Enter the address of the remote DSU oe ee oS Select the amount of time you want the test to run in hours minutes seconds hh mm ss e Press the lt or key to move the blinking cursor to the digit to be changed 9 Press the F1 key to increment the digit 1 through 9 9 Press the F2 4 key to decrement the digit 9 Select Enter F3 Please wait appears as the DSU starts the test 10 When Command Complete appears press the A key 11 Select Displ F1 to display the results of the test Table 4 6 in Chapter 4 shows the information received from a Digital Test 12 Press the key to scroll through each result De
146. o point circuit primary core programmable interface PSTN rate adaption rear connector plate receiver Remote Digital Loopback RL RTS RXD 3550 A2 GB20 20 Glossary A data network circuit that uses multipoint transmission and consists of one control with multiple tributaries A set of diagnostic and configuration management tools for a data communication network consisting of software programs and dedicated computer hardware Diagnostics that are transmitted over the in band secondary channel or routed through a DBM in Standby mode so that bandwidth assigned to the data is not affected Executing the command will not disrupt primary data Sets of configuration options or libraries that are related and that fulfill a specific function For example the Diagnostic Diag branch configuration options allow you to configure the DSU for performing diagnostic functions This option set or library contains 16 configuration options related to the DSU s or DBM s diagnostic operation A dial modem operating mode characterized by a fixed output power level of 9 dBm It is one of two possible operating modes for a DBM connected to dial lines see programmable interface The shared diagnostic control panel SDCP address of a Model 3551 DSU derived from its carrier address and physical slot number A data network circuit with one control and one tributary This is the circuit card function that is normally
147. odel DSU V 35 Interconnect Cable Installation 3 7 3 5 Addressing Exampl 892 sae 3 10 4 1 Model 3550 Diagnostic Control Panel 5 5 9 593 6 0 5 9 27892 6 8 2 8 2 9 9 8 4 6 8 head 4 2 4 2 9 and Model 3551 DSU Faceplate c e600 650 bbb enbasd 4 3 AS EPG bs eke de gs these 66 EERE E tue ete shes E othe 4 9 D 1 Digital Network Connector 44 4 4 4 D 1 D 2 3600 Hubbing Device 3600 F3 300 D 2 D 3 Model 3551 DSU 25 Pin EIA 232 25 Pin V 35 Rear Connector Plate 3000 1 02 D 4 D 4 V 35 Interconnect Cable 3000 1 510 D 6 D 5 EJA 232 D Crossover Cable 4951 035 D 8 D 6 Crossover Cable a2 IAL cco c hoe 686s ow he OEE BO OS we HED D 9 E 1 Point to Point Application Configurations with Internal and 1 11110 ACK occa scenscdawsecde bon tageucas ene sane heaae so 6 E 2 E 2 Multipoint Application Configurations E 3 3550 A2 GB20 20 December 1996 iii COMSPHERE 3550 Series Data Service Units List of Tables Table 1 1 General Technical Specifications 1 2 DSU Technical Specifications 22 4 1 3 32 DBM Technical Specifications 1 4 2 Port TDM Flex Technical
148. oint to point configurations this configuration option enables CCITT V 54 Loopback operation V 54 sequences are generated and detected on Port 1 Enab Select enable if the DTE generates V 54 loopback sequences or if the DSU is communicating with a DSU that is not a Model 3550 or 3551 that supports V 54 signaling Disab Select disable if the DTE does not support V 54 loopback sequences or the other DSUs do not support V 54 signaling 3550 A2 GB20 20 December 1996 5 7 COMSPHERE 3550 Series Data Service Units Table 5 2 Diagnostic DSU Configuration Options Diag Type Disr Next NonD Disr Mixed None Prev Diagnostic Type This configuration option defines the diagnostic interaction between control and tributary DSUs All DSUs on the same circuit should be set the same e g if the control is set to NonD all its tributaries should also be set to NonD NonD Select nondisruptive diagnostics for diagnostic data to be transmitted between the control and the tributary DSUs over a separate diagnostic channel Disr Select disruptive diagnostics for diagnostic data to be carried between the control and the tributary DSUs over the same primary channel as user transmitted data User initiated commands are sent between the control and the tributary DSUs disruptively interrupting data Select if operating over a multipoint network This setting supports nondisruptive health and status updates but user initiated commands are sen
149. ol mode idle CMI condition as a facility alarm to trigger automatic dial backup Configuration option Auto Bckup must be enabled and RTS Cntrl set to FrcOn Enab Selectif the DSU should try and attempt to establish a dial backup connection to a remote DSU after the Network Time out Disab Selectif a dial backup connection should not be attempted when CMI is detected AutoRestor Disab Next Enab Disab Prev Automatic Restoration Controls whether the DSU automatically terminates the dial backup call when the DDS circuit has returned to service On point to point circuits a Digital Test is run to verify the DDS network If the Digital Test is successful user data is switched back to the DDS circuit For a multipoint network with dedicated multipoint dial backup each tributary may be configured for Auto Restor but will not occur unless backup was initiated by the tributary The DDS network is not verified before data is switched back to the DDS network Enab Selectif restoral of the DDS circuit should trigger automatic restoration after the Restoration Time out expires Disab Selectif restoral of the DDS circuit is not to trigger automatic restoration NtwkTimOut 0 20 for a control DSU 01 00 for a tributary DSU Next Chang Prev Network Time out only displayed when Full Mode is enabled Specifies the length of time the DDS network must remain out of service before the dial backup call attempt sequence is made A
150. ontains among other information the FCC registration number and Ringer Equivalence Number REN for this equipment If requested please provide this information to your telephone company The REN is useful to determine the quantity of devices you may connect to your telephone line and still have all of those devices ring when your number is called In most but not all areas the sum of the RENs of all devices should not exceed 5 To be certain of the number of devices you may connect to your line as determined by the REN you should call your local telephone company to ascertain the maximum REN for your calling area If your DSU causes harm to the telephone network the telephone company may discontinue your service temporarily If possible they will notify you in advance But if advance notice is not practical you will be notified as soon as possible You will be advised of your right to file a complaint with the FCC If your DSU causes harm to the telephone network the telephone company may discontinue your service temporarily If possible they will notify you in advance But if advance notice is not practical you will be notified as soon as possible You will be advised of your right to file a complaint with the FCC Your telephone company may make changes in its facilities equipment operations or procedures that could affect the proper operation of your equipment If so you will be given advance notice so as to give you an opportuni
151. or Operation at available rates for distances up to 1000 feet RTS 51 DTE for MPTT FrcOn for other configurations Next FrcOn DTE Prev Request to Send Control This configuration option determines how the DSU will function with respect to the RTS lead If set to FrcOn the DSU internally forces the RTS lead ON if set to DTE the DSU sends control mode idle CMI whenever RTS is Off and data mode idle DMI when RTS is ON FrcOn _ _ Select for PTPC PTPT and MPTC configurations With this setting the DSU internally forces data mode idle DMI regardless of whether RTS at the DTE interface is ON or Off DTE Select for MPTT configuration This setting causes the DSU to send a control mode idle CMI signal whenever RTS is Off and a data mode idle DMI signal when RTS is ON CTS Cnirl Std Next Std RTS Delay FrcOn Prev Clear to Send Control Controls the behavior of the CTS lead when abnormal conditions are present e g No Signal or Test Mode as determined by the configuration options RTS Cntrl and Circ Assur Std Select for all factory loaded configurations PTPC PTPT MPTC and MPTT so that the DSU responds to abnormal conditions When selected CTS follows RTS except when the DSU is in Test Mode or an alarm or CMI is being received and Circ Assur is set to Enab When selected CTS follows RTS regardless of whether Test Mode an alarm or CMI is being received Select when using automatic backup Selecting
152. ork there are distance limitations that govern the use of DSUs on the network Table 2 2 summarizes these limitations DDS NETWORK CONNECTION EIA 232 D V 24 INTERFACE V 35 INTERFACE AA LINE LOW VOLTAGE AC POWER IN RJ48S WALL JACK 494 1 4578 Figure 2 5 Model 3550 DSU DDS LADS Network Connection December 1996 2 7 COMSPHERE 3550 Series Data Service Units Table 2 2 LADS Connection Distances Wire Gauge AWG 20 0 mi 16 6 mi 12 7 mi 9 4 mi 32 2 km 26 7 km 20 5 km 15 1 km Data Rate 1 Power level is 10 dBm Addressing the Unit A unique address must be assigned to each control and tributary DSU in your network You can assign an address within the range of 1 through 255 NOTE Do not assign the number 192 as a network address This number is reserved as a broadcast address If a DBM is installed it requires a separate address which is automatically assigned by the DSU The address assigned a DBM 15 the DSU s address plus 1 e g if the DSU s address is 1 the assigned DBM address will be 2 2 8 December 1996 NOTE The numbers 191 and 255 cannot be assigned to a DSU that has a DBM However addresses can be assigned in any order they do not have to be sequential lt is recommended that only odd numbered addresses be assigned to DSUs so that even numbered addresses are reserved for DBMs your network does not currently include DBMs you retain the flex
153. ort for both the inbound toward the control DSU and outbound from the tributary DSU directions e NMS control Control of a 3550 DSU with 2 port TDM Flex can be performed from a 6700 Series NMS or the DSU s DCP e Point to point backup A 3550 DSU with 2 port TDM Flex can also have a DBM installed for point to point dial backup If backup is at a different speed than the DSU s speed TDM Flex operation automatically changes to the lower speed Upgrades Available Although your DSU may not currently have a DBM or 2 port TDM Flex installed you can add these features at a later time Both the DBM and 2 port TDM Flex features are available as upgrades You can order the option you want and install it yourself referred to as a field installation Refer to the Equipment List in Appendix F for the feature number to order Technical Specifications Tables 1 1 through 1 4 list the technical specifications for the following e General specifications that apply to all Model 3550 and 3551 circuit cards Table 1 1 e Specifications for the Model 3550 and 3551 DSU only Table 1 2 e Specifications for the V 32 DBM Table 1 3 e Specifications for the 2 port TDM Flex only used with a Model 3550 Table 1 4 December 1996 1 3 COMSPHERE 3550 Series Data Service Units Table 1 1 1 of 2 General Technical Specifications APPROVALS FCC Part 15 FCC Part 68 UL 3550 DSU 3551 DSU 3000 Series Carrier CSA S
154. ote DSU has a DSD group PCC Buffer Disab Next Enab Disab Prev Pseudo Controlled Carrier Buffer only displayed when Full Mode is enabled Intercepts the V 13 codes used by the V 13 protocol so they do not pass to the receiving DTE This configuration option is only valid when RxCarrSel is set to Cntrl For an asynchronous port configured for switched carrier operation set PCC Buffer to Enab For a synchronous port configured for switched carrier operation PCC Buffer can be disabled or enabled depending on whether the V 13 codes disrupt communication at the receiving DTE Be aware that enabling this configuration option can corrupt the end of message for some synchronous protocols Enab _ _ Select 10 enable the PCC Buffer feature Disab Select to disable the PCC Buffer feature The menu paths for Prt and Prt2 are identical 3550 A2 GB 20 20 December 1996 5 25 COMSPHERE 3550 Series Data Service Units Table 5 11 4 of 5 MUX Port Configuration Options Elast Stor Disab Next Enab Disab Prev Elastic Store only displayed when Full Mode is enabled Elastic Store hardware consists of a transmit buffer register Serial data from the extended circuit is clocked into the DSU elastic store using a clock provided by the extended circuit received clock lead The DSU uses its own system timing to clock data out of the buffer Elastic Store is reset on power up overflow or after the RTS lead makes an Off to ON transi
155. ote Digital Loopback RL Bilateral Loopback Digital Test DT End to End Test EE Bit Error Rate Test BERT Lamp Test Lamp December 1996 3550 A2 GB20 20 Operating the DSU 6 1 0 11 ee ee ee ee eee ee ee ee ee ee 4 2 Cr ee pe an eh E 9 2 ee 6 9 he 4 2 oe eee eee eee becuase eee eee oe be eee eee 4 3 DICH SIUC fcc dh ab snecde ced nto he be ed ee eatae bee ded bee peas ox 4 4 1 4 2 7 1 ooh theta ae 3 T 4 4 DE aCe 5 ee eee ee eee ae es 25 4 4 5 1 11818 1 191 1 E ee 4 4 Device Neal st ot eh ee oe ee eee eek a een 4 4 Expanded Health and 111116 6 ee bow dea ea ewe 4 5 Subnetwork Health and Status 22 44 csiubvisnee landed dedusd ti iai si 6 4 5 E ol SS ee ee ee ee ee ee ee 4 5 Re E n ce ee ee ea oe oe ee ee es ee 4 5 TE os 4 5 Tnn PONET OS Oh Re 4 5 11 be oe ea ee oo Oe a ose ee HESS 55 4 6 Dial Backup Operation icc cc i etces wkd bhwie ke teed teree eSa 48 eh babes aduade 4 6 111518 0 10 Unto DII Pach i4scade1 kd oad Che BO bk 9 2 bens O
156. ous operation may not be set for underspeed NOTE When Port Cntrlis set to DSD or Share DeVA is enabled in the MUX Setup option set port speeds are only counted once per DSD when calculating used bandwidth Disab No port runs underspeed during primary operation Prti or Selected port runs underspeed during primary operation Prt2 3550 A2 GB20 20 December 1996 5 27 COMSPHERE 3550 Series Data Service Units Table 5 13 Port Speed DBM Configuration Options 1 9 6 9 6 Next 14 4 56 12 0 9 6 4 8 2 4 1 2 Disab Prev Port 1 Speed Primary data rate in kbps on Port 1 Must be set to the same value in the remote DBM 14 4to Select to set the port s operating rate 1 2 kbps Disab Select to disable the port Option Verification For all ports the DBM verifies that the sum of the individual port soeeds does not exceed the primary aggregate speed set in Rate Kbps in the DBM option set If the sum of the port soeeds equals the primary aggregate rate an underspeed port selection is required Prt2 9 6 9 6 for MPTT Disab for all other configurations Next 14 4 12 0 19 2 9 6 4 8 2 4 1 2 Disab Prev Port 2 Speed Primary data rate in kbps on Port 2 Must be set to the same value in the remote DBM 14 4to Select to set the port s operating rate 1 2 kbps Disab Select to disable the port Option Verification For all ports the DSU verifies that the sum of the individual port speeds do
157. p AutoAnswer 4 6 automatic setup and restoration 1 2 AutoRestor 4 7 AutoRetrain 3550 A2 GB20 20 Index December 1996 backup branch 8 6 menu selections configuration options 5 21 external dial manual 4 mode external H 7 option set 4 7 4 7 point to point 1 2 Backup Dir 5 21 Bad Phone failure message BadPermiss failure message BckUp status indicator SDCP Bckup 8 6 Bckup Dir Bell Canada specifications DSU test Bilat Lpbk 5 19 bilateral loopback DBM test message DSU test message C 4 BiplrViol alarm bit error rate test 2 12 3 12 4 11 2 4 11 DBM test message C 3 DSU test message port test message branch backup configuration 4 12 control messages Busy DBM error messag ve C 10 failure message C 6 C 6 Index 1 COMSPHERE 3550 Series Data Service Units cable crossover EIA 232 D figure V 35 figure EJA 232 connecting Port 2 2 11 V 35 connecting Port 2 interconnect D 6 Call Aborted DBM error message C 10 Call Setup 8 6 Callback 4 6 DBM message C 8 Callback Fail DBM error message c 10 capacity port 1 3 carrier rear view COMSPHERE 3000 CarrLossDisc CC IN DC OUT hubbing device pin assignments D 3 CCN by EL Chang 419 change external leads hardware straps channel primary Circ Assur 5 18 CircQ circuit pack lock Model 3611 qualit cir bet CMI
158. peed underspeed compensation PORT DTE INTERFACE 3550 DSU 2 port TDM Flex Provides an additional 25 pin D subminiature connector for a total of two EIA 232 or V 35 interfaces NMS SUPPORT TDM Flex capability is fully supported by Release 4 0 or greater COMSPHERE 6700 Series NMS Equipment Warranty and Support Contact your sales or service representative directly for any help needed For additional information concerning warranty sales service repair installation documentation or training use one of the following methods e Via the Internet Visit the Paradyne World Wide Web site at http www paradyne com e Via Telephone Call our automated call system to receive current information via fax or to speak with a company representative Within the U S A call 1 800 870 2221 International call 727 530 2340 1 8 December 1996 3550 A2 GB20 20 Installing the Model 3550 DSU VEN ON mayen geet ease ohne eed eaeed B tore Yon Bee oo oc eh c eh ksh ee ee 5 8 How to Change Hardware Straps Where to Place the DSU 2 4 6 45c4 00085 6400e0e00 Instaline Mhe Sc oe hh ee te ae Power Up Routine 2 96 89 9 dies 869 1 1 5181 6 16 1 1511 6 766 9772 s Connecting to the NMS 24612244 4casebiavews Connecting to the Dial or PSTN Network Connecting to the DDS or LADS Network Addressma he WAN i gs odo 4c nd 844506554 426805
159. port before CTS is turned ON at the local port When RTS is dropped the DSU sends a code that turns Off LSD at the remote TDM Flex port The corresponding remote TDM Flex port must be configured for Receiver Controlled Carrier RxCarrSel set to Cnirl This selection is not valid if the DSU is part of a Digital Sharing Device DSD group See the Mark selection in the configuration option Receiver Carrier Select RxCarrSel Const Next Const Cnitrl Mark Prev Receiver Carrier Select only displayed when Full Mode is enabled Enables the TDM Flex receiver circuitry to simulate switched carrier operation using the V 13 codes on an individual circuit NOTE Configuration values Const and Cnitrl for Receiver Carrier Select are both valid choices for a port belonging to a digital sharing group Const Select Constant carrier operation if the receiving DSU is not to look for V 13 codes used by the V 13 protocol and is not to toggle LSD Cntr Select Controlled or switched carrier operation PCC mode if the receiving DSU is to look for V 13 codes used by the V 13 protocol indicating the transition of RTS at the remote TDM Flex port the receiving DSU toggles LSD as appropriate Mark Select if 30 consecutive Marks are received and received Line Signal Detect LSD goes Off at the port Received LSD goes ON again just before the first space 7xCarrSe must be set to Const at the remote unit This setting is used primarily when the rem
160. pshot status of the local or remote unit s external DTE interface e For the local DSU status the display is sampled and updated every 2 seconds e For the remote DSU status only one set of states is returned based upon a monitoring period of approximately 3 seconds The DTE interface statuses are displayed in sets Use the lt 1 or key to scroll each set of lead statuses into view 3550 A2 GB20 20 Operating the DSU Circuit Quality Circuit Quality CircQ shows the level and quality of the signal being received from the network by the DBM This subbranch is only available for a V 32 DBM Identity Identity ID displays a listing of the DSU s model and serial numbers the equipment installed DBM or TDM Flex software firmware versions the network address the DDS or DSU s rate the DBM s rate and whether the TDM Flex is currently activated C gt Procedure 1 Press the gt key to scroll JD into view 2 Press the function key F1 F2 or F3 directly below the selection One field at a time is displayed 3 Press the gt key to display the information one display screen at a time Table 4 1 lists the Identity information provided about the DSU and its equipment Terminal Power Terminal Power TPwr displays the status of the connected DTE s EIA 232 and V 35 interface connector The DSU checks the state of the RTS lead to determine when the DTE is ON 9 When the voltage is less
161. ptacle for the presence of earth ground If the receptacle is not properly grounded the installation must not continue until a qualified electrician has corrected the problem a three wire grounding type power source is not available consult a qualified electrician to determine another method of grounding the equipment 3 Slots and openings in the cabinet are provided for ventilation To ensure reliable operation of the product and to protect it from overheating these slots and openings must not be blocked or covered 4 Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the power cord 5 Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous high voltage points or other risks Refer all servicing to qualified service personnel 6 General purpose cables are provided with this product Special cables which may be required by the regulatory inspection authority for the installation site are the responsibility of the customer 7 When installed in the final configuration the product must comply with the applicable Safety Standards and regulatory requirements of the country in which it is installed If necessary consult with the appropriate regulatory agencies and inspection authorities to ensure compliance 8 A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings If products install
162. r DBMs When an End to End Test is run diagnostic data may be disrupted Operating the DSU To view the results of the test select Displ Display and press the key to scroll through the results shown in Table 4 4 When the test is over the top line displays Final instead of Active Bit Error Rate Test The Bit Error Rate Test BERT 15 a session disruptive test that transmits a 511 bit pattern It analyzes the network circuit It can monitor the results by putting the remote DSU or DBM into Digital Loopback and checking the returned pattern for errors or by simultaneously executing a BERT in the local DSU The test continues until aborted from the DCP or NMS This test can be run on a per port basis if a TDM Flex is installed A control DSU can initiate a Bit Error Rate Test in a point to point or a multipoint network A tributary DSU can only initiate this test in a point to point network If nondisruptive diagnostics are in effect if Diag Type is set to NonD diagnostic data can be disrupted To display the results of the test press F2 to select Displ The results are shown in Table 4 5 76 clear the results of the test and clear the counters to zero press F3 to select Clr Table 4 4 End to End Test Results Results Reported By Information Displayed Local and Remote DSU DBM Running test timer The Clr selection resets the timer to 0 00 00 Tot Block Local and remote Number of blocks completed T
163. r V 35 operation Port 2 of Model 3550 2 port TDM Flex ACCULINK 3100 Series CSU Wall Mount Adapter 3100 F 1 400 406941674 for Model 3550 Model 3551 Digital DDS Network Cables 50 pin to eight 6 pin Multiple Network Interface Adapter 1 51 3000 F 1 009 106459621 Model 3551 in Canada 50 pin to eight 8 pin Multiple Network Interface Adapter 1 51 3600 F2 503 106303837 Model 3551 in U S A Model 3551 Dial PSTN Network Cable Adapter 50 pin to eight 6 pin RJ11C Permissive Cable 1 5 3600 F2 505 106459928 50 pin to eight 8 pin RJ45S Programmable Cable 1 5 3600 F2 504 106459548 3600 Hubbing Device 3600 F3 300 106744683 NMS Adapter Cable Diagnostic Extension 3000 F2 510 106768690 NMS EIA 232 D Interface Connector 6700 Series NMS Adapter 873A 4400 F1 594 106473150 NMS 6 pin Modular Cable M6BK 3 4400 F 1 510 106472830 10 4400 F 1 511 106472848 25 4400 F 1 512 106472855 1 These cables are extended using 3000 F1 013 014 cable 3550 A2 GB20 20 December 1996 F 1 COMSPHERE 3550 Series Data Service Units Feature Part No Equipment G Factory Install Comcode F Field Install Model 3550 Dial PSTN Network Interface Cables Telephone Cord 6 pin modular RJ11C Permissive Plug 7 4400 F 1 531 106472913 14 3600 F3 503 107331357 25 4400 F 1 533 106472921 Telephone Cord 8 pin Modular RJ45S Programmable Plug 2 5 4400 F 1 541 106472947 14 4400 F 1 543 1064729
164. ransmitted immediately DTE Select for the DSU to turn ON RTS when the external RTS is turned ON CTS is turned ON or Off by the external control signal RTS The menu paths for Prt and Prt2 are identical 5 24 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 11 3 of 5 MUX Port Configuration Options TxCarrSel Const Next Const Cnitrl Prev Transmitter Carrier Select only displayed when Full Mode is enabled Enables the TDM Flex transmitter circuitry to simulate switched carrier operation using the V 13 codes on an individual channel Simulated switched carrier operation is also referred to as pseudo controlled carrier PCC mode It is required for applications where the receiving DTE expects a raised LSD lead prior to receiving data NOTE A port may be configured for switched carrier operation in one direction and constant carrier operation in the other Const Select constant carrier operation if the V 13 codes are not to be sent The corresponding remote TDM Flex port must be configured for Receiver Constant Carrier or Mark RxCarrSe set to Const or Mark Configure each port in a digital sharing group for Constant Carrier operation 7xCarrSel set to Const Select Controlled or switched carrier operation PCC mode if the DSU is to transmit the V 13 codes over the DDS line when the port RTS changes state When RTS is turned ON the DSU transmits a code that turns ON LSD at the remote TDM Flex
165. ration cannot be configured to run underspeed Choose a synchronous port and configure it for underspeed via the appropriate path DSU or DBM in the PrtSp configuration submenu DBM Aggreg Exceeded DSU Aggreg Exceeded ExtBU Agg Exceed The sum of the TDM Flex port speeds is greater than the value for the DSU DBM or ExtBU Rate Kbps configuration option You can correct the problem in one of two ways 1 Set the Rate Kbps of the DSU DBM or ExtBU to a higher value 2 Lower the DSU DBM or ExtBU port speeds via the appropriate path DSU or DBM in the PrtSp configuration sub menu DSD Speeds diff Not all of the TDM Flex ports in the digital sharing group are set to the same speed Set all of the ports in the digital sharing group to the same speed via the appropriate path DSU or DBM in the PrtSp configuration submenu DSD Wrong RTS One or more TDM Flex ports in a digital sharing group with DSD port control have an incorrect RTS Control setting Each port in a digital sharing group configured for contention must have its RTS Control configuration option set to DTE RTS Cnitrl DTE Set RTS Cnirl to DTE for all ports in the digital sharing group via the appropriate paths Prt1 and Prt2 in the MUX configuration submenu Ext Time undspd The TDM Flex port selected as the source of external timing TxClkSource is set to the port specified in the DSU or ExtBU and or DBM configuration sub
166. ration options to ensure that DBM is enabled 3 If you cannot correct the problem contact your service representative DBM Yes The rate in the calling and called Check speed configured in both units RateMismatch DBM or modem are not compatible DBM SecurityFail No Passwords in calling and called 1 Make sure that both DBMs have DBM do not match compatible security options 2 Make sure that both DBMs have the proper password 1 If Yes an error message is reported to the NMS if the NMS initiated the dial command C 10 December 1996 3550 A2 GB20 20 Table C 10 1 of 3 TDM Flex Error Messages Status Indicators and Control Panel Messages Message Condition Action All Async gt Aggr All ports of the TDM Flex are configured for asynchronous operation and their combined corresponding synchronous rate exceeds the value for the DSU DBM or ExtBU Rate Kbps configuration option If all ports are assigned to asynchronous operation the sum of the corresponding synchronous port speeds must be ess than the value of the DSU DBM or ExtBU rate You can correct the problem in one of two ways 1 Set the Rate Kbps of the DSU DBM or ExtBU to a higher value 2 Lower the port speeds of the DSU DBM or ExtBU in the PrtSp configuration submenu Async Undspeed An attempt was made to run an TDM Flex asynchronous port at underspeed A port configured for asynchronous ope
167. rk source e g a T1 MUX or DSU that is on the DDS network Disab Select disable if you do not have an extended network or are providing the clock source to the extended network e g LADS with external clock 5 6 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 1 2 of 2 DSU Configuration Options RxElasStor Disab Next Enab Disab Prev Receive Elastic Store only displayed when Full Mode is enabled The DSU receives data using a receive data buffer on the DSU s received data RXD lead This configuration option only supports single port DSUs configured for disruptive diagnostics Diag Type is set to Disr and no rate adaption when Rate Kbps is equal to PrtSp Kbps Both the control and tributary DSUs must be configured the same Enab Select enable when interfacing with a DCE that receives clock from its own network source and does not support a Transmit Elastic Store Disab Select disable if you do not have an extended network 19 2 PowrLvl 6 Next 6 0 10 Prev 19 2 kbps Power Level only displayed when Full Mode is enabled and when Rate Kbps is set to 19 2 kbps This configuration option selects the appropriate power level in dBm for operation at 19 2 kbps 6 Select for DDS network service 0 Select for an alternate DDS service 10 Select for LADS operation V 54 Lpbk Disab Next Enab Disab Prev V 54 Loopback only displayed when Full Mode is enabled Used in p
168. rocedure 1 Select Chang F3 Chng Poll List A Activ Delet Skip 8 e fe 2 Select Activ F1 A 4 Enerj A eje 3 Press the F1 key to increment network address 2 Address 1 J fej le we 4 Select Enter F3 Make 3 Active Command Complete aj lel le The address is added to the poll list The control determines the round trip delay then sends that information to the tributary DSU 5 Press the A key to return to the Chng Poll List screen December 1996 4 15 COMSPHERE 3550 Series Data Service Units To delete a network address e g 3 from the poll list 2 Procedure Chng Poll List A Activ Delet Skip fay le 1 Select Delet F2 Address 3 el 25 aj fe Le 2 Select Enter F3 In this example 3 was just added so it 15 the address displayed If another address needs to be deleted change the network address displayed as previously shown Del 3 frPList Ag Command Complete aj Le The tributary DSU associated with the address is removed from the poll list 4 16 December 1996 Acquiring the Poll List To automatically generate a poll list 2 Procedure Poll List Disp Clr Chang 6 vi Jl 1 Press the lt I key to display Acq Poll List Acq Disp Clr 1 868 2 Select Acq
169. rt2 DSU Diagnostic General Value Position Cntrl Trib LinkConfig Pt Pt M Pt Model 3550 or 3551 DSU Configuration Worksheet 2 of 2 Full Menu Mode Disabled 53 7 DTE Port EIA232 V 35 Async Sync Enab Disab Async Rate Sync 1800 1200 600 300 150 AsyncBit Char 6 7 8 9 10 Stop Bits 1 2 Overspeed 1 25 2 5 RTS Cntrl FrcOn DTE MUX Setup Value MUX Port 1 Value MUX Funct Enab Disab DTE Port EIA232 V 35 Share DevA Enab Disab 5 5 Enab Disab Port Cnitrl Host DSD Async Rate Sync 1800 1200 600 300 150 AsyncBit Char 6 7 8 9 10 Stop Bits 1 2 Overspeed 1 25 2 5 RTS Cnitrl FrcOn DTE Hardware Straps Value DDS Interface Permissive Programmable Frame Ground Connected Disconnected Signal Ground Port Speed DSU Value Test Mode indication Enalbed Disabled Prt1 xx x 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab Prt2 xx x 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab Underspeed Disab Prt1 Prt2 Port Speed DBM Value Prti xx x 14 4 12 0 9 6 4 8 2 4 1 2 Disab Prt2 xx x 14 4 12 0 9 6 4 8 2 4 1 2 Disab Underspeed Disab Prt1 Prt2 Goines VEU 1 xx x 64 56 48 28 8 19 2 14 4 9 6 4 8 2 4 1 2 Disab Prt2 xx x 64 56 48 28 8 19 2 14 4 9 6 4 8 2 4 1 2 Disa
170. runcat mes sae support equipment I 8 switch jumper locations Model 3551 3551 8 3 location figure 2 2 3 settings 4 006113 0 2 3 8 3 switched carrier emulation network interface Sync gt Async Req error message Sync Port Requi equir error message SystemStat 5 18 TDM Flex technical specifications technical specifications DSU general TDM Flex V 32 DBM telephone number entering 4 17 temperature operating storage terminal power Test status indicator SDCP C 2 test lamp local loopback mode DBM test message DSU test message port test message remote digital a 2 12 3 12 Test message Thresh message Time Division Multiplexer 1 2 3550 A2 GB20 20 Index TM DBM test DSU test port test Too Many Ports error message c 13 top level menu TPwr Trunc message TxCarrSel TxClkSource 5 6 5 12 5 12 5 16 TXD status indicator C 2 TxCtl 4 4 19 TxElasStor TxPwd 5 14 UL Undersp Required error message 1 upgrades V 13 Signl 5 15 V 32 DBM technical specifications V 35 connector pin assignments crossover cable figure D 9 interconnect cable figure V 54 Lpbk verification 5 115 10 E vibration Wait Callback DBM message WaitForAnswr DBM message warning notices C warranty worksheets configuration Index 9
171. running when power is supplied to the unit A dial modem operating mode characterized by an output power level 12 to 0 dBm set by a programming resistor in the datajack It is one of two possible operating modes for a DBM connected to dial lines see permissive interface Public Switched Telephone Network also called the dial network Used when the DSU or DBM operates at a speed greater than the DTE This capability is enabled automatically when the port speed is set lower than the line speed A plate that contains two DTE connectors and is installed on the COMSPHERE 3000 Series Carrier The rear connector plate allows the removal of a Model 3551 DSU from the front of the carrier without having to disconnect the DTE cables A circuit that accepts data signals from a transmitter A test typically used when testing an external device A test message from the external device is looped back from the receiver to the transmitter in the remote device then returned to the local DSU An RL puts the remote DSU or device into Digital Loopback The state of the Request to Send lead The state of the Received Data lead December 1996 Glossary 5 session disruptive session nondisruptive diagnostics Shared Diagnostic Control Panel SDCP Shared Diagnostic Unit SDU standalone Time Division Multiplexer TDM Flex training transmitter tributary TXD UL USOC 6700 Series Network Management System NMS Gloss
172. s CCITT V 22bis 2400 Hz COMMUNICATION LINE 2 wire analog PSTN line DATA RATES DBM COMPATIBILITY APPROVALS DOC Certification PSTN Load Number RECEIVE VF INTERFACE Dynamic Range V 32 2 wire PSTN Impedance SWITCHED NETWORK INTERFACE 3550 DSU 3551 DSU TRANSMIT VF INTERFACE Signal Level V 32 2 wire Dial PSTN Impedance 3550 A2 GB20 20 2 4 4 8 9 6 12 14 4 kbps If Call Setup is set for Callback or Password security then the device is compatible with a Model 3550 or 3551 V 32 DBM If Call Setup is set for Alarm or None then any V 32 modem can be used Also V 22bis at 2 4 kbps can be used 230 3684 A 7 43 to 10 dBm 600 Q 6 pin modular jack Permissive USOC RJ11C 8 pin modular jack Programmable USOC RJ45S One or two 50 pin connector Permissive USOC RJ21X Programmable USOC RJ27X Permissive 9 dBm Programmable 12 to 0 dBm set by a resistor in the telco jack 600 Q December 1996 1 7 COMSPHERE 3550 Series Data Service Units Table 1 4 2 Port TDM Flex Technical Specifications APPLICATION Multiplexing Provides time division multiplexing of two independent ports Digital sharing Allows consecutive ports to share the same TDM Flex channel PORT SYNCHRONOUS RATES 1 2 2 4 4 8 9 6 12 0 14 4 19 2 48 56 and 64 kbps PORT ASYNCHRONOUS RATES 150 300 600 1200 and 1800 bps plus all primary DSU rates Asynchronous rates support 2 3 2 5 percent overs
173. s Data Service Units Table C 1 DSU Status Indicators Health and status indicator DSU operation is normal The DSU has not detected any of the faults listed under Alrm below This indicator flashes two times per second if a message from the NMS is present Alrm Red Health and status indicator There is a fault in the local or remote DSU DBM or DDS facility or there is a corrupted configuration The following alarms at the local or remote DSU cause the Alrm status indicator on the affected DSU to light Configuration Corrupt Device Fault Dial Tone Test Failure DTR Alarm Facility Alarm MUX Failure No Response Redundant Power Alarm Streaming Terminal Subnetwork Alarm Out of Frame Threshold Out of Service Test Yellow Active device DSU or DBM is either performing a test or other DSUs or DBMs are in Test mode Yellow DBM is active Rapid flashing Call setup in progress Slow flashing Call established but in Standby mode Steady ON Backup call established and active TXD RXD RTS Green Internal lead states at the DSU DTE interface circuit designations i DSH DUR Control circuit active or Data circuit SPACE ing Front Panel Yellow DSU is currently selected at the SDCP The SDCP addresses one DSU at a Model 3551 only time 1 The DSU or DBM is automatically put into Test mode when a remote DSU or DBM is performing a disruptive test e g a Local Loopback LL at the control DSU A DSU or DBM in Tes
174. s publication is protected by federal copyright law No part of this publication may be copied or distributed transmitted transcribed stored in a retrieval system or translated into any human or computer language in any form or by any means electronic mechanical magnetic manual or otherwise or disclosed to third parties without the express written permission of Paradyne Corporation 8545 126th Avenue North P O Box 2826 Largo Florida 33779 2826 Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties ofmerchantability or fitness for a particular purpose Further Paradyne Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or changes A December 1996 3550 A2 GB20 20 Safety Instructions Important Safety Instructions 3550 A2 GB20 20 1 Read and follow all warning notices and instructions marked on the product or included in the manual 2 This product is intended to be used with a three wire grounding type plug a plug which has a grounding pin This is a safety feature Equipment grounding is vital to ensure safe operation Do not defeat the purpose of the grounding type plug by modifying the plug or using an adaptor Prior to installation use an outlet tester or a voltmeter to check the ac rece
175. s to signal the DSU to perform a Local Loopback Local Loopback ends when the signal is dropped Disab Selectif Local Loopback requests are to be ignored RL by DTE Disab Next Enab Disab Prev Remote Digital Loopback by DTE only displayed when Full Mode is enabled Allows the DTE to initiate a Remote Digital Loopback via Pin 21 of the EIA 232 D V 24 interface or Pin N of the V 35 interface Enab Select if the DTE is to force the DSU to request a Remote Digital Loopback when the signal is turned ON Remote Digital Loopback ends when the signal is dropped Disab Select if the DSU is to ignore requests for a Remote Digital Loopback Bilat Lobk Disab Next Enab Disab Prev Bilateral Loopback only displayed when Full Mode is enabled If this configuration option is enabled a DTE Loopback occurs when a Digital Loopback occurs Enab _ Select fora DIE Loopback to be run whenever a Digital Loopback occurs Disab Select for the DSU to ignore requests for a Bilateral Loopback Ext Leads Rate Next ExtLd Rate RPowr Prev External Leads only displayed when Full Mode is enabled Controls the use of the general purpose leads on the EIA 232 D V 24 interface for Port 1 except when Rate is selected These leads can be controlled and monitored from the DCP or from a 6700 Series NMS Exttd Select to enable Pin 12 and 13 as output control and Pins 19 and 23 as input alarm leads When enabled Pins 12 and 13 output 12V
176. select another option set to view or you can proceed Refer to Chapter 5 Configuring the Unit for an example showing you how to edit change configuration options 4 13 COMSPHERE 3550 Series Data Service Units 5 Select Save F1 The Save to screen appears 6 Select Activ F1 The selected application s configuration is saved to the DSU s Active operating area and the Command Complete message appears Configuration Options The Configuration Options Opts subbranch allows you to save copy and or change configuration options It also is the place where the DSU s ports are configured or reconfigured for E A 232 or V 35 operation Refer to Chapter 5 Configuring the Unit Chapter 5 fully explains the Opts subbranch and provides an example of changing configuration options Reconfiguring a DSU Port Select this procedure if your unit does not have a TDM Flex installed and enabled Procedure 1 Select the Confg Configuration branch 2 Press the F1 key to select Opts Configuration Options subbranch 3 Select Activ Active or one of the factory set configurations PTPC PTPT MPTC or MPTT from the Load from screen 4 Press the gt key until Gen General appears above a function key F1 F2 or F3 5 Select Gen The first configuration option in the option set is DTE Port 6 Select V 35 the default is EIA232 The DTE Port setting changes to V 35 7 Press the A key to re
177. ssage Disabled message C 8 DTR Discon error message C 10 ExtBU Active message Inact message Illegal Char error message No Answer error message No Ringing error message NoDialTone error message NotConnected error message option set 4 6 Port Speed configuration options 5 28 RateMismatch error message Ringing message security 1 2 SecurityFail error message speed and mode message Standby message Starting Up message technical specifications telephone number C 8 test BERT V 32bis 14 4 kbps Wait Callback message C 8 WaitForAnswr message DBM Disab failure message DBM test Lamp DBMTst message 1 2 security DDS network connection 3 9 interface Ee speed message DDS F alarm message DDS network connection Te 2 7 default setting descriptions 1 6 DBM test DSU test 3550 A2 GB20 20 December 1996 Index Devic 4 9 message 7 device 3600 hubbing 3600 Series hubbing pin assignments D 3 3 3 CC IN DC OUT health and device test DBM test message DSU test message Device Test Failure Diag Type 5 10 diagnostic DBM configuration options DSU configuration options 58 external DBU configuration UT 5 10 general configuration options 5 10 control panel interface nondisruptive tributary Dial Attempt number of failures 6 6 Status indicator Tone Test Fai
178. st initiator port test initiator REN reporting external lead changes to NMS 4 20 requirements ac power 1 4 government D Resp Period RespondRDL 5 18 restoration automatic RestorTimOut ringer equivalence number REN Ringing DBM ics RL 4 10 DBM test DSU test C 4 port test RL by DTE RPower message RTS status indicator Index 8 December 1996 RTS Cntrl RTS AnStr Conflc error message RTS CTS Del RTS TxCrr Conflc error message c 12 RxCarrSel RXD status indicator RxElasStor 5 7 RxPwd safety CSA 1 4 safety instructions B saving configuration options SDCP Model 3611 faceplate Status indicators security access levels 4 21 DBM Security failure message SecurityFail DBM error message c 10 Select key Selective session disruptive setting configuration options setup automatic Share DevA shock signal level Single Rate 5 13 single port async sync specifications technical 1 3 external DBU C 3 speeds line port standard features Standby DBM message C 3 DBM Begs Starting Up DBM message Status SDCP Stndby message Stop Bits 5 201 storage temperature Stream message streaming terminal Streaming Terminal alarm 3550 A2 GB20 20 Subn 4 4 4 5 subnetwork 4 health and status messages Subnetwork Alarm SubnetwrkAlarm message Sub normal oe Eo message SubSpd message C 7 Subtree T
179. stalled The DBM automatically acquires an address equal to the DSU s plus 1 Assigning an Address The Addressing the Unit sections of the installation chapters Chapters 2 and 3 provide guidelines for assigning an address to the DSU based upon its position in the network control or tributary Follow the steps below to assign a network address to a DSU Refer to the menu in Appendix A if necessary 2 Procedure 1 Select Confg Configuration branch from the menu Press the key to scroll Confg into view then press the function key F3 directly below the branch name to select it 2 Press the gt key until Addr Address appears then select Addr 3 Select Load Net Address appears with the current network address displayed The DSU is shipped with its network address set to 254 4 Change the DSU s network address by moving the blinking cursor and incrementing or decrementing the digits 1 through 9 Press the key moves the cursor 1 position to the right Press the lt 1 key moves the cursor 1 position to the left Press the F1 7 key increments the digit by e g 1 2 3 Press the F2 4 key decrements the digit by 1 A 5 Press the A key to return to the Net Address screen when finished entering the DSU s address 3550 A2 GB20 20 6 Select Save F2 The DSU displays the address assigned along with a Command Complete message If a
180. sting Connections 2 11 3 Installing the Model 3551 DSU OO 256575 98554606004 6 oie ee tadet 3 1 Before VOW Bei 6 2 9 96 2 6 5 8 66 20 4 whee ka inaina ii 3 2 How to Change Hardware 5 8 5 3 2 Installing the DSU cc on ec ede nkta eee Reet 9 se mans 3 5 Connecting to the Network 2 4966 560 saseenbecashoeaarows 3 8 C nnec ne the DSU foa DIE sco sc ccs eeeeisae ee Ge iken 3 9 Addressing the WM 5 79 29 scs iise PLONE aed 8 eee Oe a 3 9 Verifying Operation and Testing Connections 000 000 3 10 December 1996 COMSPHERE 3550 Series Data Service Units 4 Operating the DSU Goes ee eT ee ee ee eer ee eee 4 2 DCP and SDCP Operation 904669 ceo 4 2 Mont MO 2 otk Bd Oh REG 8 48S Bea dws 4 4 Pie me 5 6 90 9 9 9 5 5 3 oak he wae des 4 4 Backup eho 2926 4 6 1 1 essere rr arenneren aeea 4 9 Configuration Branch ssssseesa sananne Roo ee be ane ae 4 12 Control Branch sc incchetwtatate sth tua teas abad owed 4 19 Messages DICI ote e ieee tw ent Kak ee bo 4 20 5 Configuring the Unit Appendix Glossary index RIE 45b55es beeen bene tet sene 5 1 Using the DCP to Set Configuration Options
181. sue a Local Loopback to a tributary DSU the DSU must have a DBM installed or a Conflict w Environ message will appear The DBM is required to call the tributary and abort the Local Loopback the NMS is to abort the loopback the tributary s DBM must be in Idle or Standby mode If in Dial Backup mode and the NMS issues the Abort command the command will not be recognized The loopback will have to be aborted from the DSU s control panel DTE Loopback DTE Loopback DTE loops back the data path at the DTE interface on a per port basis without affecting the operation of the remaining ports This loopback is used to verify that the DTE connection and the cable are good Digital Loopback Digital Loopback DL allows manual testing of the remote end of the circuit Data coming in is immediately transmitted back For example a Digital Loopback may be required in order to complete an external bit error rate test BERT from the remote DSU The local DSU receives test data loops it back to the transmitter before the DTE interface and returns it to the network Digital Loopback can also be initiated by receiving a V 54 pattern to go into Digital Loopback Enable configuration options V 54 Lpbk V 54 Loopback and RespondRDL Respond to Remote Digital Loopback Remote Digital Loopback Remote Digital Loopback RL sometimes referred to as RDL typically supports testing using an external device like a protocol analyzer t
182. t between the control and the tributary DSUs disruptively interrupting data Select none if only local diagnostics are to be allowed that is there will be no diagnostic communications with remote devices 2nd Ch bps 400 Next 100 400 800 1200 1600 Prev In band Secondary Channel Diagnostic Transport Speed in bps only displayed when Diag Type is set to NonD and Full Mode is enabled This configuration option allocates the DSU s port bandwidth when there is no excess bandwidth available for in band secondary channel transport used for diagnostic data operation How to Select Bandwidth Select one of the valid diagnostic speeds from the table below for the DSU s port and the DDS line s speed as specified in the Rate Kbps configuration option under the DSU option set Example If the DSU s Rate Kbps configuration option is set to 9 6 kbps you can select 100 400 800 1200 or 1600 If you select 400 the resulting DSU port speed will be 9 2 kbps NOTE When The TDM Flex is operating at a line rate greater than 19 2 kbps or with a multipoint configuration 100 bps is not a valid in band secondary channel transport rate If the DSU Rate Kbps is equal to Port Speed or if the underspeed port speed and sum of the TDM Flex ports is equal to the aggregate speed on the DSU Valid diagnostic speeds are 100 400 100 400 800 100 400 800 1200 1600 100 400 800 1200 1600 100 400 800 1200 1600 100 400 800 120
183. t mode has its DTE interface turned Off Table C 2 SDCP Status Indicators Health and status indicator for the selected DSU mirrors the OK indicator on the DSU faceplate Health and status indicator for the selected DSU mirrors the Alrm indicator on the DSU faceplate Yellow Mirrors the BckUp LED on the selected DSU Yellow Mirrors the Test indicator on the selected DSU Error Correction indicator is for future use by dial network modems C 2 December 1996 3550 A2 GB20 20 Control Panel Messages This section shows the screen format of messages appearing on the control panel and describes the various messages Three types of messages are included health and status progress and error messages Status Indicators and Control Panel Messages Format The format of the control panel messages is shown below Command Name ES vp le we Health and Status Messages There are three types of health and status messages Device Health and Status messages are described in Table C 3 Expanded Health and Status messages are described in Table C 4 and Subnetwork Health and Status messages are described in Table C 5 Table C 3 1 of 3 Device Health and Status Messages Message Condition CMI Fac Alarm Facility Alarm on CMI FacAlOnCMIl configuration option is enabled and control mode idle CMI is being received Config Corrupt Configuration is corrupt Reset all configuration options
184. ta Service Units 10 Press the A key to return to the Enter Dir screen 11 Press the F3 key to Save the entry 12 Verify that the number was loaded by pressing the A key again and selecting Load F2 The telephone number should appear as entered or you can repeat the procedure to edit correct your entry Table 4 6 Directory Entry and Password Characters Use 65 9 39 i Tone dialing character Tone dialing character t Tone dial p Pulse dial Wait for dial tone Delimiter separating telephone number and callback directory pointer for use with callback security In a dial string a 2 second pause at the beginning of a password suppresses display of all following characters invisible mode Space readability character space _ underscore Required character for end of string marker erases end of line 1 The colon character should not be entered from the NMS 2 Space is not used for directory entries Phone The local telephone number Phone feature stores the local DBM s telephone number if a DBM 15 installed Refer to Table 4 6 to see all available telephone number characters 4 18 December 1996 Network Address The network address Addr is the network address of the local DSU It is only available from the Local branch The DSU s network address is a number in the range of 1 to 254 if the DSU has a DBM in
185. tall the NIM 3550 A2 GB20 20 Connecting to the DDS or LADS Network NOTE Before connecting the DSU to the DDS network ensure that approved primary protectors have been installed on the circuit in accordance with Article 800 of the National Electric Code NFPA 70 in the United States and Section 60 of the Canadian Electric Code Part 1 in Canada If connecting the DSU to a LADS network there are distance limitations that govern the use of DSUs on the network Table 2 2 in Chapter 2 summarizes these limitations The DDS network interface is provided by two RJ48T 50 pin connectors on the back of the carrier refer back to Figure 3 2 DDS Interface Each connector serves eight contiguous slots in the carrier one for Slots 1 through 8 and one for Slots 9 through 16 Appendix E provides connectivity diagrams should you need further assistance in connecting the DSU to the network Connecting the DSU to a DTE The DTE interface for the Model 3551 DSU is provided through its rear connector plate Each rear connector plate contains two DB25 or 25 pin D type connectors The top connector is an EIA 232 D V 24 ISO 2110 connector The bottom connector is a CCITT V 35 ISO 2593 connector To use the 25 pin V 35 connector used for speeds greater than 19 2 kbps a V 35 interconnect cable is needed feature number 3000 F1 510 This cable provides the interface between the 25 pin V 35 D type connector and a V 35 DTE cable
186. ter an underscore _ to the immediate right of the last character in the password To make the password invisible from the DCP enter a comma as the first character 5 14 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 6 4 of 4 DBM Configuration Options V 13 Signl Enab for MPTC and MPTT Disab for other configurations Next Enab Disab Prev V 13 Signaling only displayed when Full Mode is enabled V 13 signaling applies to the DBM when the DBM is in Dial Backup mode The normal RTS CTS delay is 14 ms at 2 4 kbps and 11 ms at all other speeds when V 13 is enabled It is under 2 ms when V 13 is disabled For the V 13 sequence to be generated by a tributary DBM the following must be set RTS Cntrl must be set to DTE CTS Cnirl set to Std or Delay For the V 13 sequence to function at the contro DBM the following must be set LSD Lead must be set to Std NOTE Although this configuration option must be enabled in both the tributary and control DSUs in order to use V 13 signalling RTS Cntrl propagation only occurs in the tributary to control direction Enab Select when backing up a circuit that is configured for nondisruptive or mixed diagnostics or rate adaption When enabled at both ends LSD is turned ON at the control while RTS is ON at the tributary and is turned Off when RTS is turned Off at the tributary DBM The V 13 sequence is sent over the network to tell the control to turn ON LSD only for a MPTC or
187. th this option time division multiplexing can be performed using two independent ports to share one standard DDS point to point circuit e Line speeds The TDM Flex operates at all line speeds supported by the DSU 2 4 4 8 9 6 19 2 38 4 and 56 kbps For LADS operation 64 kbps is also supported e Port speeds Each port can be set to 1 2 2 4 4 8 9 6 14 4 19 2 48 56 or 64 kbps In 2 port TDM Flex applications the sum of the port speeds cannot exceed the line speed e Asynchronous operation Although the DSU provides synchronous transmission through the DDS network any port can be configured for asynchronous operation When the 2 port TDM Flex is installed asynchronous to synchronous conversion can be performed Asynchronous data rates of 150 300 600 1200 and 1800 bps are supported along with the synchronous data rates e Digital sharing With this feature the ports can share the same channel All ports in a digital sharing group operate at the same speed and all receive the same data When configured for DSD digital sharing device port contention only one port at a time is allowed to send e Elastic store per port A transmit elastic store buffer is provided for each port for the support of extended circuits Both digital and analog extensions are supported 3550 A2 GB20 20 About Your DSU e Switched carrier emulation In 2 port TDM Flex transmission switched carrier emulation is optional for each p
188. that this is a carrier mounted DSU 1 01A instead of Port1 that is located in Carrier 1 Slot 1 15 operating as a DSU 1 6 not as a DBM at 9 6 kbps and is configured as a control C From the second line you can see that there are no NMS messages no Msg branch over the F3 key waiting to be read and cleared Also note that the SDCP indicator on the selected DSU s faceplate Front Panel is lit Verifying Network Addresses the Network and DBM Operation Access the DSU s identity ID subbranch for each tributary DSU to ensure that the DSUs are properly addressed Perform a Digital Test on the DDS circuit to ensure that the network is functioning If a DBM is installed perform the Digital Test by selecting DBM from the Run Test from screen instead of DSU Next test the tributary DBM for dial tone and verify that the DSU can place and receive calls Refer to the Verifying Operation and Testing Connections section of Chapter 2 for procedures that lead you through each of these procedures December 1996 3 11 COMSPHERE 3550 Series Data Service Units Other Tests The following lists the tests available on your DSU Refer to the Test Branch section of Chapter 4 for further test information as well as more detail on how to configure and operate the DSU Refer to Appendix A to determine how best to access each test 3 12 Device Test Devic Local Loopback LL DTE Loopback DTE Digital Loopback DL Rem
189. the control for Pswrd and the tributary for Cllbk 4 6 December 1996 3550 A2 GB20 20 If the tributary DSU is to initiate the call set the control for Cllbk and the tributary for Pswrd External DBU Option Set This option set will not appear if a DBM is installed ExtBU Select whether the external DBU will answer or place backup calls The external DBU must be able to support Dial on DTR Ansr The external DBU will answer incoming calls The DBU must provide DSR when the call is complete Orig The external DBU will place an outgoing call None The external backup feature 15 disabled The DSU will not switch data to the alternate port None is the default Backup Option Set None of these need to be set for manual backup 3550 A2 GB20 20 Auto Bckup Select Enab When enabled the DSU will automatically initiate dial backup Up to 10 attempts will be made If both the control and tributary DSUs are configured for automatic backup NtwkTimOut should be set to different values so that the control and tributary DSUs do not try to place a call at the same time On a point to point circuit it is best that only one end performs automatic backup It is possible to trigger the backup for single direction network failures only detected at the remote DSU The remote DSU must have RTS Control set to FrcOn Bckup Dir Select the call directory identifier 1 to 10 stored in the DBM s Backup Dire
190. the DBM is to answer incoming calls only after the DSU reports a Facility Alarm No security checking is performed This feature is provided for customers that provide data services to other customers that may not have Model 3550 or 3551 DSUs and DBMs RxPwd password Next Chang Prev Receive Password only displayed when Call Setup is set 10 Callobk or Pswrd and when Full Mode is enabled The DBM expects to receive a password from the remote DBM This password must be the remote DBM s transmit password TxPwd The maximum password length is 10 characters Refer to Chapter 4 for available password characters Chang Select and then enter the remote DBM s transmit password as the local DBM s receive password For passwords less than 10 characters long enter an underscore _ to the immediate right of the last character in the password To make the password invisible from the DCP enter a comma as the first character TxPwd password Next Chang Prev Transmit Password only displayed when Call Setup is set to Callbk or Pswrd and when Full Mode is enabled The DBM expects to transmit a password to the remote DBM This password must be the remote DBM s receive password RxPwd The maximum password length is 10 characters Refer to Chapter 4 for available password characters Chang Select and then enter the remote DBM s receive password as the local DBM s transmit password For passwords less than 10 characters long en
191. the term DCP refers to both types of diagnostic control panels the DCP or the SDCP e Full tributary diagnostics The DSU supports a full complement of diagnostic tests and commands Diagnostics can be addressed to and sent to tributaries from a 6700 Series NMS workstation or from the DCP of a control DSU e External dial backup The DSU can use an external dial backup unit DBU e g a 3800 Series dial lease modem to provide backup This feature may be used in a point to point DSU configuration and can be used with either a control or tributary DSU For more information about the 3000 Series Carrier or the SDCP refer to the COMSPHERE 3000 Series Carrier Installation Manual For more information about the 6700 Series NMS refer to the COMSPHERE 6700 Series Network Management System User s Guide These are identified in the Related Documents section of the Preface which also provides information on how to order these documents 1 2 December 1996 Optional Features The Model 3550 DSU can be ordered with the following optional features e V 32bis 14 4 kbps Dial Backup Module DBM e Time Division Multiplexer TDM Flex The Model 3551 DSU can be ordered with a V 32bis 14 4 kbps DBM or it can be used with an external DBU If your DSU 15 not equipped with these options go to the next section V 32 DBM The V 32bis 14 4 kbps dial backup module referred to as DBM throughout this guide childboard is attached to t
192. tion To save edited configuration options 2 Procedure 1 From any configuration option in any option set press the key to return to the Edit Save submenu 2 Press the F1 key below SAVE 3 Select area Activ Remt Usr1 on the Save to screen e If Activ is selected your changes take effect immediately e Usrl is selected your changes are stored for future use e Ifthe unit is a control and Remt is selected the complete set all option sets available to the unit of configurations are sent to the tributary and saved to its Activ area Remember that you cannot save to the factory loaded configurations Example Using the DCP In this example load the configuration options stored in the PTPT area change Diagnostic Type Diag Type under the Diagnostic DSU option set from Disr to NonD change DTE Port under the General option set from 1 232 to V 35 then save the changes to the Usrl area and return to the main or top level menu Configuring the Unit 2 Procedure Press the DCP keys indicated by the shading Porti DSU 9 60 Local Remot Local Mode Stat Bckup Test Local Mode Bckup Test Confg Configure Opts PList Dir Load from Activ Remt Usr1 Load from Remt Usr1 PTPC Load from Usr1 PTPC PTPT 3550 A2 GB20 20 December 1996 5 3 COMSPHERE 3550 Series Data Service Units 5 4 Edit Save SAVE DSU Diag Chang Diag Opts DSU DBM Gen 2 3
193. tion After reset the elastic store can drift by 5 bits with the TDM Flex enabled before overflow occurs Enab Select to enable this configuration option Disab Select to disable this configuration option RTS CTS Del 0 Next Chang Prev Request To Send to Clear To Send Delay only displayed when Full Mode is enabled Allows for an additional delay between the time that RTS is turned ON and CTS is turned ON An additional delay is sometimes required for multiplexed applications operating in switched carrier operation Enough delay must be provided so that the last DSU in the circuit has time to train and is ready to accept data before CTS is turned ON Chang Select to change the RTS to CTS delay from 0 to 1040 milliseconds in 8 milliseconds increments DTR Alarm Disab Next Enab Disab Prev Data Terminal Ready Alarm only displayed when Full Mode is enabled Causes the DSU to report an alarm for the port if the port s DTR lead is Off for more than 30 seconds The DCP displays DTR Alarm and reports the alarm to NMS Enab Selectif you want the DSU to report an alarm when the port s DTR lead turns Off for 30 seconds Disab Select no alarm is to be reported regardless how long the port s DTR lead is Off AntiStream Disab Next Chang Prev Antistreaming only displayed when Full Mode is enabled Antistreaming provides circuit protection against a streaming DTE a defective DTE that has its RTS lead constantly t
194. turn to the Edit Save menu 8 Select SAVE F1 9 Select Activ F1 from the Save to screen Command Complete appears to confirm that the configuration is saved 4 14 December 1996 Reconfiguring a TDM Flex Port The Connecting the DSU to a DTE section of Chapter 2 tells you how to connect Port 2 if your DSU is equipped with a TDM Flex With the TDM Flex option you can configure each port Port or Port 2 independently e g one port can be configured for EIA 232 operation while other port is configured for V 35 operation or vice versa The unit is shipped with both ports configured for EJA 232 operation To reconfigure a TDM Flex port Procedure 1 Select the Confg Configuration branch 2 Press the F1 key to select Opts Configuration Options subbranch 3 Select Activ Active or one of the factory set configurations PTPC PTPT MPTC or MPTT from the Load from screen 4 Press the lt I key until MUX appears above a function key 5 Select MUX F1 If the TDM Flex is disabled go to the next step If the TDM Flex is enabled go to step 9 6 Select Setup F1 7 For MUX Funct select Enab 8 Press the A key to return to the Change MUX Opts menu 9 Select F3 The first configuration option in the option set is DTE Port 10 Select V 35 the default is 1 232 The DTE Port setting changes to V 35 11 Press the A key to return to the Change MUX Opts menu 12
195. ty to maintain uninterrupted service The DBM cannot be used on public coin operated telephone service provided by the telephone company Connection to party line service is subject to state tariffs Contact the state public utility commission public service commission or corporation commission for information No repairs may be performed by the user Should you experience difficulty with this equipment refer to the Equipment Warranty and Support section of Chapter 1 For Digital Data Service DDS installations inform the local telephone company of the appropriate network channel interface code for the service you desire DDS Interface Data Rate Code bps 04DU5 48 4800 04DU5 96 9600 04DU5 19 19 200 04DU5 56 96 000 December 1996 D COMSPHERE 3550 Series Data Service Units The DDS Service Order Number is 6 0Y The jack configurations required are RJ48S for the Model 3550 DSU and RJ48T for the Model 3551 With an RJ48T configuration you must specify the number of data lines you require Refer to the Technical Specifications section of Chapter 1 for V 32 DBM jack information After the telephone company has installed the requested jack you can connect the DSU with the appropriate cable provided An FCC compliant telephone cord and modular plug is provided with this equipment This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack that is Part 68 compliant
196. u The top level menu is the starting point for all DSU operations You can always return to this point from anywhere in the menu by pressing the A key Pressing this key immediately terminates any operation or work in progress Refer to Appendix A as you read about the branches and subbranches 4 4 December 1996 Status Branch The Status Stat branch reports on the health and status of the DSU DBM TDM Flex the DTE interface the quality of the dial connection the identity of the DSU model number serial number etc and the terminal s power where it checks the presence of voltage on the DTE s RTS lead Health and Status The Health and Status H S subbranch displays the health and status of the DSU as well as a DBM or TDM Flex if installed It automatically scans for DSU and line conditions that are not within normal limits There are three types of Health and Status messages e Devic Device Health and Status e Expan Expanded Health and Status e Subn Subnetwork Health and Status All alarm and status conditions are displayed for the specified DSU at the time the option 15 selected For a local DSU the alarm and status conditions are updated every 2 seconds for a remote DSU the alarm and status conditions are not updated Refer to Appendix C for a complete listing of these messages Device Health and Status Device Health and Status Devic reports health and status information for a selected DSU I
197. ubnetwork Health and Status Messages Message Condition Devic TDM Flex only Device Failure One of the following major alarms is in effect Configuration Corrupt Device Test Failure MUX Device Failure DialBU Dial BackUp mode Indicates that the DBM 5 active DialCN Dial Connect Indicates that the DBM is in Standby mode DialTn Dial Tone Test failure Disab Indicates that the DSU DBM or Port nn is disabled DTR DTE alarm Data Terminal Ready lead is Off ExtLd External lead alarm a or b Facil DDS facility alarm Indicates a network facility alarm MUX Indicates a MUX TDM Flex failure NoResp The active poll list member did not respond Probable cause a facility problem a remote DSU problem or an incorrect poll list Normal Active poll list member does not report an alarm or its status RPower Redundant power supply alarm Stndby DBM is in Dial Standby Stream Streaming terminal SubSpd Subnormal operating speed Test Test mode It could be a DSU DBM or Port test Thresh Threshold is exceeded TribTm Multipoint tributary time out Multipoint tributary is not answering polls Trunc Subtree truncation More information is being received than can be returned in the poll You must access each tributary for its messages 3550 A2 GB20 20 December 1996 C 7 COMSPHERE 3550 Series Data Service Units Progress Messages Table C 6 describes the command progress messages and Table C 7 describes the dial backup progress
198. uration Options Table 5 8 Backup Configuration Options Table 5 9 Configuring the Unit MUX Setup Configuration Options Table 5 10 MUX Port Configuration Options Table 5 11 Port Speed DSU Configuration Options for DSU Table 5 12 Port Speed DBM Configuration Options Table 5 13 Port Speed External DBU Configuration Options Table 5 14 Understanding the Tables Refer to the appropriate tables when configuring the DSU Each configuration option is segmented into three sections the option as it appears on the DCP an explanation of the option then the values that can be selected or set Each table shows each configuration option as it is displayed As you refer to these tables be aware of the following The first line shows each configuration option as it appears on the DCP followed by a colon then the default setting the value set at the factory The second line shows all selectable values which can be viewed on the DCP by scrolling to the left or right using the or key The first selection is always Next which allows you to go to the next configuration option in the set The last selection is always Prev which allows you to go back to the previous configuration option Possible selections wrap around so you can immediately press the lt I key to display Prev saving key presses An explanation of that configuration option and its selectable values follow which includes Dece
199. urned ON by clamping the RTS lead of the tributary DSU Antistreaming only takes effect when RTS Cntrl is set to DTE it is disabled when RTS Cntrl is set to FrcOn Chang Set timer to any value from 1 to 100 second s in increments of 1 or to Disab when streaming terminal detection is not needed DSR FrcOn Enab Next Enab Disab Prev Data Set Ready Forced On only displayed when Full Mode is enabled Provides the ability to override any other options controlling the DSR lead Enab __ Select for DSR to remain ON as long as the device is working regardless of any tests or network alarms Disab Selectif DSR is to function as an active lead reflecting various test and alarm conditions DSR on Tst Enab Next Enab Disab Prev Data Set Ready On in Test only displayed when Full Mode is enabled Controls the behavior of the DSR lead during testing Enab DSR is ON continuously during testing allowing a DTE that relies on DSR being ON to send test messages to the DSU Disab DSR is Off during testing 5 26 December 1996 3550 A2 GB20 20 Configuring the Unit Table 5 11 5 of 5 MUX Port Configuration Options The menu paths for and Prt2 are identical Table 5 12 Port Speed DSU Configuration Options Prti 9 6 9 6 Next 64 56 48 19 2 9 6 4 8 2 4 1 2 Disab Prev Port 1 Speed Primary data rate in kbps on Port 1 Must be set to the same value in the remote DSU 64to __ Select to set th
200. uto Bckup must be enabled When configured for nondisruptive diagnostics rate adaption or if TDM Flex is enabled this configuration option must be set to greater than or equal to 20 seconds Chang Select to enter or change the current settings which can range from 1 second to 30 minutes The cursor has two positions a minutes field with a range of 0 to 29 and a seconds field with a range of 00 to 59 3550 A2 GB 20 20 December 1996 5 21 COMSPHERE 3550 Series Data Service Units Table 5 9 2 of 2 Backup Configuration Options RestorTimOut 5m Next Chang Prev Restoration Time out only displayed when Full Mode is enabled Specifies the length of time the DDS network must be back in service before automatic restoration is attempted Auto Restor must be enabled Chang Select to enter or change the current setting range of 1 to 60 minutes Tries TimeOut 15m Next Chang Prev Call Attempts Time out only displayed when Full Mode is enabled Sets an overall time limit for dial backup call attempts when the DDS network fails Auto Bckup must be enabled regardless of whether MultiCall is enabled multiple calling cycle or disabled normal calling cycle Only 10 call attempts are made for the normal calling cycle If a call attempt is in progress and the timer expires the call attempt will not be aborted Chang Select to enter or change the current setting range of 1 to 60 minutes MultiCall Disab Next Enab D
201. when ON and 12V when Off Pins 19 and 23 recognize voltages from 2 2V to 12V as ON reported as an external alarm and 12V to 8V as Off Select if a TDM Flex is installed so that Pin 12 on each port can be used to control speed selection and cause an extended modem to change speed to match the backup port speed Select only when a redundant power supply is installed in the COMSPHERE 3000 Series Carrier This selection functions similarly to ExtLd CCN by EL Disab Next Enab Disab Prev Configuration Change Notification by External Leads only displayed when Full Mode is enabled Controls the use of the general purpose output leads to set a CCN event Ext Leads must be set to ExtLd Enab Selectif a change in state of a general purpose lead signals CCN to the NMS Disab Select if changes to the lead state do not set a CCN event 3550 A2 GB20 20 December 1996 5 19 COMSPHERE 3550 Series Data Service Units Table 5 8 4 of 4 General Configuration Options DTR Alarm Disab Next Enab Disab Prev Data Terminal Ready Alarm only displayed when Full Mode is enabled and a TDM Flex is not installed Causes the DSU to generate an alarm if DTR is Off for more than 30 seconds The DCP displays DTR Alarm and reports the alarm to the NMS Enab Selectif the DSU should generate an alarm when DTR is turned Off for 30 seconds Disab Selectif the DTR lead is to be ignored Async Sync Disab Next Enab Disab Prev
202. x A Provides a diagram for navigating the DSU s menu structure Appendix B Summarizes the configuration option sets for you Appendix C Lists the DSU s status indicators as well as their messages identifying when they appear Appendix D Shows point to point and multipoint application configurations and network hookups Appendix E Provides cable and connector pin assignments Appendix F Equipment List Glossary Reference Card 3550 A2 GB 20 20 December 1996 Vii COMSPHERE 3550 Series Data Service Units Related Documents Call your sales representative to order additional product documentation Other product documentation includes the following 3000 A2 GA31 3000 A2 GB41 6700 A2 GB41 6700 A2 GY31 Vili 3550 A2 GB20 20 COMSPHERE 3000 Series Carrier Installation Manual COMSPHERE 48 Vdc Central Office Power Unit Installation Guide COMSPHERE 6700 Series Network Management System User s Guide Security Manager Feature Supplement COMSPHERE 6700 Series Network Management System User s Guide Reference Documents December 1996 AT amp T Technical Reference 41458 AT amp T Technical Reference 61330 AT amp T Technical Reference 62310 1987 Bell Canada DCTE Specifications Bell Communications Research Technical Reference Publication 41028 CCITT V 35 ISO 2593 EIA 232 D V 24 ISO 2110 Integrated Network Corporation Compatibility Bulletin CB INC 101 Pacific Bell PUB L 7800
203. y DBMs must be configured the same Enab Select enable when interfacing with a DCE that receives clock from its own network source and does not support a Transmit Elastic Store Disab Select disable if you do not have an extended network 3550 A2 GB20 20 December 1996 5 13 COMSPHERE 3550 Series Data Service Units Table 5 6 3 of 4 DBM Configuration Options Call Setup None Next None Pswrd Cllok Alarm Prev Dial Backup Call Setup only displayed when Full Mode is enabled Establishes the level of security for call setup attempts This configuration option prevents an invalid call from causing the DSU to switch data to the DBM None Select for outgoing calls when no security is needed If a Model 3550 or 3551 DBM calls the unit automatically switches to Dial Backup mode If a non Model 3550 or 3551 DBM calls the unit remains in Standby mode for 15 seconds before switching to Dial Backup mode Select when both the originating and answering DBMs must exchange valid passwords to establish a call This is an intermediate security level Both devices must be either Model 3550 or 3551 DSUs and DBMs Select when you want the highest level of security When this security level is set the originating and answering DBMs exchange passwords then disconnect The answering DBM then calls the originating DBM back and there is a second exchange of passwords Both devices must be either Model 3550 or 3551 DSUs and DBMs Select when

Paradyne 3551 Network Card User Manual

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