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ADC H2TU-C-231 User's Manual

1. LED RS 232 craft port for connection to a maintenance terminal Front panel dual loopback commands e Maintenance screens for inventory provisioning and troubleshooting DS1 and HDSL2 performance monitoring DS1 and HDSL2 alarm histories Payload PL and HiGain HG loopback source identification Margin Alarm MAL threshold Report menu option for downloading status and performance monitoring data to a file Bit Error Rate BER Tester BERT e Network Management and Administration NMA interface e Configuration options Selectable DS X 1 pre equalizer Bipolar Violation Transparency BPVT Bit Error Rate BER alarm Power Back Off Network PBON and Power Back Off Customer PBOC options for configuring HDSL2 transmit power levels Loss of Signal Alarm Indication Signal LOS AIS payload alarm H2TU C 231 List 2 January 9 2002 1 Overview LTPH UM 1109 01 Issue 1 Remote provisioning Selectable loopback activation codes e Additional Loopback Timeout LBTO settings of 8 hours and 24 hours e Compatible with Small Cross Section Shelf SXSS and equipment DS1 is used throughout this document to refer to either the remote unit s DS1 interface or the Zz line unit s DSX 1 interface COMPATIBILITY The H2TU C 231 List 2 is designed to mount in 220 mechanics shelves For a list of compatible shelves see Appendix C Compatibility on page 60 APPLICATIONS HiGain HDSL2 systems provide a cost effective
2. Rlogon LTPH UM 1109 01 Issue 1 4 Type the time in the format indicated entering seconds is optional then press ENTER The Inventory screen provides product information on all units in the system and allows setting of the circuit and unit identification numbers Type the ID numbers of all other devices listed in the system pressing ENTER after each entry January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Provisioning Configuring the System The Config menu Figure 6 allows you to make the following types of system configuration changes e Standard options Figure 7 on page 16 e ADC options Figure 8 on page 16 BERT Generator Figure 29 on page 52 e Date and time see Setting Date and Time on page 13 e Master clear see Clearing the History Alarm and Event Log Screens on page 23 e Reset to factory default configuration see Resetting to Factory Default Values on page 10 Monitor Performance Event Log Juel Inventory Report Rlogon Standard Options gt ADC Options gt BERT Generator gt Date and Time gt Master Clear Set Factory Defaults XXXX XXXX XXKX XXXX 09 01 2001 12 30 01 H2TU C Figure 6 Config Menu Making Changes to Standard and ADC Options Figure 7 and Figure 8 on page 16 show the Standard and ADC configuration options Standard options are those supported by HiGain HDSL2 units when connected to units from other vendors ADC options are an ext
3. Using the System Event Log to Track Events rnernnrvrnvrnrvrrernnvrvenernnnnvevnrnvrervervrervereravrareresvsveresvsvee 36 Using th Report Menu ae re Oa EE Een S EEEE mete E ar E EEE E A gneeesais 37 H2TU C 231 List 2 January 9 2002 v Table of Contents LTPH UM 1109 01 Issue 1 Testing 40 System Alarms 2003 foes esses ec ales ruse Reese en 40 Alarm Option for Digital Loop Carrier DLC Feed 000 eee eee ceeesee sete ceeeeneeeeeneeees 41 Retiring System Alarmi Se seers rrei rerainan vedatte a dadguecuensdaeentere 41 Remote LOS and AIS Response rennrverevrrnvrnvrrvvrrvnnrnervvrvvnnvenrnnnvrervervrevrarvrverasereenssnsensennne 42 OCT55 Test Pattern with AMI Line Code esenrnrrvvrrnvrnvnrvvnvvernrrvrrenrrnvrenrrnvervennvevvesvrarvnevrasvrverasnseer 42 Loopback Operation 5 ccccccscae dose ces hee aske ca cebinsvsck satun oesie n O EEEa cosh ovscs ESEESE NES EVEN EK OKE EE ee 43 Generic Loopback Commands issiro eseese enne an eie ieres i E iaie eaat 43 Special Loopback Commands seesesereteeeseorerererrsrsrererserersrereresrerererereserersreersrsrerereenere 45 Manual Loopback Session rervvrvvrnvrovvvnvrnvvrrvravrnrvrarnaverernervvesnsrnvervesvvesvesvrasvnevrasvrsevasnsee 46 Loopback Test ProceduresinusgoncvsGeuikassnnasnikesendknsedrhraravunsaviine ensues 47 General Troubleshooting Tips 0 0 cece ce ceseesccesceeecesceseeeeceseeeaeeseeeaecaeesaecsecsaecseseseeseeseees 47 GNEB Test Procedu
4. XXX DBER LOF Line Unit Loss of Signal Loss of the H2TU C DSX 1 input signal Line Alarm Indication Signal lndicates an AIS unframed all ones pattern is being received at the H2TU C DS1 input port Bit Error Rate The DS1 BER has exceeded the built in 24 hour threshold limits of approximately 10 xxx denotes either TUC or TUR Loss of Frame lIndicates the incoming DS1 payload does not contain the specific frame pattern ESF or SF selected by the FRMG option Only occurs if the FRMG option is set to SF or ESF H2TU R DS1 ALARMS see Figure 22 on page 33 RLOS RAIS RAI LRAI PRM NE PRM FE DBER LOF RLOS RAIS RRAI LRAI PRMN PRMF XXX DBER LOF Remote Unit Loss of Signal Loss of the H2TU R DS1 input signal Remote Alarm Indication Signal lndicates an AIS unframed all ones pattern is being received at the H2TU R DS1 input port By default see Figure 26 on page 42 AIS GI is sent towards the network Remote RAI Remote Alarm Indication at the H2TU R Indicates an RAI alarm yellow from the CPE with errors from the line unit or network Line Unit RAI Remote Alarm Indication at the H2TU R Indicates an RAI alarm yellow from the CPE with an error free signal from the line unit or network RAI signal is transmitted towards the network Performance Report Messaging Near End The count of the PRM NE register at the H2TU R exceeds the 10 BER threshold
5. easy to deploy method for delivering T1 High Capacity Digital Service HCDS over a single copper pair HiGain HDSL2 systems support a multitude of network connections and system models e The service is deployed over one unconditioned non loaded copper pair e Conventional inline DS1 repeaters are no longer required e Cable pair conditioning pair separation and bridged tap removal are not required Each loop has no more than 35 dB of loss at 196 kHz with driving and terminating impedances of 135Q In general HiGain HDSL2 systems e Operate effectively in the same cable binder group with other HDSL2 lines HDSL DS1 ADSL SDSL POTS Digital Data Service DDS and other transmission schemes e Can be used with customers requiring DS1 service on a temporary or permanent basis Provide a means of quickly deploying service in advance of fiber optic transmission systems 2 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Front Panel FRONT PANEL Figure 1 shows the H2TU C 231 List 2 front panel Table 1 on page 4 describes the front panel components For a list of front panel display messages refer to Front Panel Display Messages on page 5 For pinout diagrams of the H2TU C card edge connector and craft port refer to Appendix A Specifications on page 54 ho HiGain HDSL2 MODE SEL Front panel display MODE and SEL pushbuttons P I 1 Status LED DSX 1 acces
6. of the three loopdown commands listed in Table 18 The automatic time out mode is restored during subsequent loopback sessions Table 18 summarizes the codes required to execute Addressable 3 A3LB and Addressable 4 A4LB repeater loopback commands All code sequences must be present for at least 5 seconds Table 18 Addressable Repeater Loopback Commands A3LB and A4LB Name Binary Code Hexadecimal Equivalent Description NLOC 1111 1111 0001 1110 FF1E H2TU C 231 loopup from NI GREM 0011 1111 0001 1110 3F1E H2TU C 231 loopup from CI NREM 1111 1111 0000 0010 FFO2 H2TU R loopup from NI CLOC 0011 1111 0000 0010 3F02 H2TU R loopup from CI SMJK 11000 11000 11000 H2TU R loopup from NI SMJK 100000 100000 100000 H2TU R loopup from NI SMJK 1111 1111 0100 1000 FF48 H2TU R loopup from NI ESF DL Loopdown 11100 11100 11100 H2TU C and H2TU R loopdown from NI OR Cl Loopdown 100 100 100 H2TU C and H2TU R loopdown from NI OR Cl Loopdown 1111 1111 0010 0100 FF24 H2TU C and H2TU R loopdown from NI OR CI ESF DL a The leftmost bit arrives first in all sequences The detection algorithm functions reliably with a random 10 BER on the facility The entire arming and loopback sequence can also be initiated at the remote H2TU R location b Not supported by A4LB H2TU C 231 List 2 January 9 2002 51 Testing LTPH UM 1109 01 Issue 1 TESTING WITH H2TU C BERT GENERATOR T
7. 229 231 bit errors GREM DS1 signal from customer is looped back to the customer at the H2TU C 231 ILR 2 LPBK NREM or CLOC 1100 0111 0100 0010 C742 NREM DSX 1 signal is looped back to the network 20 bit errors at the H2TU R CLOC DS1 signal from customer is looped back to the customer at the H2TU R IR LPDN 1001 0011 1001 0011 9393 Loopdown H2TU C or H2TU R IR QUERY LPBK 1101 0101 1101 0101 D5D5 Query loopback IR ALTERNATE QUERY LPBK 1101 0101 1110 1010 D5EA Alternate query loopback TIME OUT OVERRIDE 1101 0101 1101 0110 D5D6 Loopback time out override Far End NI ACTIVATE 1100 0101 0101 0100 C554 Unblock AIS IOR POWER DOWN H2TU C 0110 0111 0110 0111 6767 Removes HDSL2 line power a The leftmost bit arrives first in all sequences The detection algorithm functions reliably with a random 10 BER on the facility The entire arming and loopback sequence can also be initiated at the remote H2TU R location b The H2TU R identifies CREM and the H2TU C identifies NLOC with 231 bit errors including the frame bits When framed data is being sent in the Auto framing mode the number of the 231 bit errors detected by the test set varies from 229 to 231 depending on whether or not the test set counts frame errors as bit errors and on the number of frame bits contained in the block of 231 error bits The H2TU R and H2TU C generate this bit pattern in a series of discontinuous bursts conta
8. C 231 Power Parameter Siin n a E E E destaeoes devia sd eed artista 55 21 HDSE2 Reach Chart sivesgereieretsteneer issersksran ascnesbih cascnaus et reS EEr asooo E KEE venha CORSES a KES EE as TSi ai 56 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Overview OVERVIEW The H2TU C 231 List 2 line unit is the Central Office CO side of a T1 transmission system The HiGain HDSL2 product family is fully compliant with the HDSL2 standard ANSI T1 418 2000 Providing full rate T1 access using just a single copper pair HDSL2 is a cost effective solution that offers an open architecture The open architecture inherent in HDSL2 guarantees interoperability allowing simple and economic accommodation of network growth HiGain HDSL2 products provide 1 544 Mbps transmission on one unconditioned copper pair over the full Carrier Service Area CSA range The CSA includes loops up to 12 000 feet of 24 AWG wire or 9 000 feet of 26 AWG wire including bridged taps FEATURES e HDSL2 transmission features Lightning and power cross protection on HDSL2 interfaces Full duplex HDSL2 transmission on one pair at 1 552 Mbps Ultra low wander Stratum I compliant Grounded loop detection on High bit rate Digital Subscriber Line 2 HDSL2 Sources sealing current when connected to any locally powered H4TU R 402 e Front panel provisioning features Four character status display DS1 splitting and bridging access Status Light Emitting Diode
9. ENTER to make your choice When prompted with the message Are you sure Y N press Y to initiate the loopback or N to cancel For more information about loopbacks and troubleshooting see Testing beginning on page 40 24 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Monitoring System Activity and Performance 3 To initiate a loopdown of all active loopbacks press the SPACEBAR to select LPDN then press ENTER or N When prompted with the message Are you sure Y N press Y to initiate the loopdown or IN to cancel Table 8 Monitor Screen Descriptions Field Active loopback Alarm type Armed mode BERT Status Code type DS1 ES Count DS1 SES Count DS1 UAS Count Frame type HDSL2 ES Count HDSL2 SES Count HDSL2 UAS Count LA LPF MAL PL or HG PRM System Status Description An active loopback is indicated on the lower third of the Monitor screen Available loopbacks are indicated by gray text See Table 16 on page 44 for a summary of the HiGain HDSL2 loopback codes Indicates type of alarm Indicates system is in an armed state for an intelligent repeater IR loopback command Provides BERT Generator status elapsed time and BERT results Type of DS1 line coding received or sent B8ZS or AMI Errored Seconds The sum of the Errored Seconds Line ES L and Errored Seconds Path ES P counts detected on the DS1 input over a 24 hour period Errors included are DS1
10. Enables the HiGain HDSL2 system to output an LOS condition at its DS1 ports page 20 for LOSW and DS1 LOS H2TU R TLOS TLOS ENA Enables a logic loopback at the H2TU R when an LOS occurs at its DS1 input Loopback See Figure 26 on page 42 for LOS AIS response priorities DIS Disables Transmit Loss of Signal TLOS logic loopback Network NLBP AIS Enables the H2TU R to transmit an AIS towards Cl for any network loopback Loopback Pattern See Figure 26 on page 42 for LOS AIS response priorities LOS Enables the H2TU R to transmit an LOS towards Cl for any network loopback Power Back Off PBOC DEF Configures the power output levels of the H2TU R customer unit toward the Customer network to comply with the Default template as defined in Section 6 1 4 2 of See Power Back ANSI T1 E1 4 Off PBON and ENH Configures the power output levels of the H2TU R customer unit toward the PBOC Options network to comply with the Enhanced template as defined in Section 6 1 4 2 on page 20 of ANSI T1 E1 4 Power Back Off PBON DEF Configures the power output levels of the H2TU C 231 network unit toward Network the customer to comply with the Default template as defined in Section See Power Back 6 1 4 2 of ANSI T1 E1 4 Off PBON and ENH Configures the power output levels of the H2TU C 231 network unit toward PBOC Options the customer to comply with the Enhanced template as defined in Section on page 20 6 1 4 2 of ANSI T1 E1 4 Table 6 H2TU C 231 List 2 ADC Confi
11. Frame errors BPV and ESF CRC errors Severely Errored Seconds The sum of the DS1 Severely Errored Seconds Line SES L and Severely Errored Seconds Path SES P counts over the last 24 hours Unavailable Errored Seconds The number of seconds during which the DS1 input signal was absent over a 24 hour period Type of DS1 framing detected at the input stream SF ESF or UNFR Errored Seconds The number of 1 second intervals that contained at least one CRC or LOSW error This value is a running total of the last 24 Hours Severely Errored Seconds The number of 1 second intervals that contain at least 50 CRC errors or one or more LOSW defects An LOSW defect occurs when at least three consecutive HDSL frames contain one or more frame bit errors This value is a running total of the last 24 hours Unavailable Errored Seconds The number of seconds the HDSL2 loop is unavailable This occurs after 10 contiguous HDSL SES seconds and is retired after 10 contiguous non SES seconds This value is a running total of the last 24 hours Circuit identification ID number Loop Attenuation lndicates the attenuation of the Overlapped Pulse Amplitude Modulation Transmission with Interlocking Spectra OPTIS pulse from the distant end The value is related to the loop attenuation at 196 kHz and should be kept under 35 dB Line Power Feed lndicates the HDSL2 line power is on Margin The signal to noise SNR ratio at all HDSL2 ports r
12. Locally powered 8 6 6 7 205 0 MAXIMUM POWER DISSIPATION The maximum power dissipation measures the power that is converted into heat that builds up within the unit It contributes to the total heat generated in the space around the unit It is used to determine the maximum number of fully loaded shelves per bay that does not exceed the maximum allowable power dissipation density in watts per square foot to comply with GR 63 In COs the maximum power dissipation for open faced natural convection cooled mountings is limited to 134 7 watts per square foot per GR 63 CORE The footprint of a standard 28 slot 23 inch HCS 417 shelf is 7 024 square feet Therefore the maximum bay dissipation is limited to 946 watts Use this limit and the parameters in Table 20 to determine the maximum number of H2TU C circuits that can occupy one CO bay density More favorable conditions would permit increasing the number of shelves per bay This is a worst case situation since it assumes the entire CO is subjected to the maximum power without jeopardizing the CO thermal integrity The thermal loading limitations imposed when using the H2TU C in a Controlled Environmental Vault CEV or in other enclosures are determined by applying its power parameters to the manufacturer s requirements for each specific housing The 48 Vdc power consumption is the maximum total power that the H2TU C 231 consumes or draws from the shelf power source This parameter is needed
13. Margin Alarm PWR FEED GND Ground PWR FEED OPEN Open PWR FEED SHRT Short PRMF Performance Report Messaging Far End Description A system alarm has occurred and has been retired to an ACO condition by pressing the SEL pushbutton on the H2TU C front panel A system alarm condition is in effect A system DS1 BER alarm is in effect and remains in effect until cleared A system HDSL2 Block Error Rate alarm is in effect Indicates that the attenuation on the HDSL2 loop has exceeded the maximum threshold value Indicates an AIS unframed all ones pattern is being received or transmitted at the H2TU C DS1 input or output ports Indicates that no signal is detected at the DSX 1 input to the H2TU C Causes a system alarm Indicates that the HDSL2 loop has lost synchronization Indicates an RAI alarm yellow from the CPE with an error free signal from the line unit or network RAI signal is transmitted towards the network The margin on HDSL2 loop has dropped below the threshold 0 to 15 dB as set by the operator The HDSL2 loop is grounded Indicates a line power open condition Indicates a short between the Tip and Ring of the HDSL2 pair H2TU R PRM FE BER threshold has been exceeded PRMN Performance Report Messaging H2TU R PRM NE BER threshold has been exceeded Near End RAIS Remote Alarm Indication Signal Indicates an AIS an unframed all ones pattern is being received at the H2TU R DS1 input port RLOS Remo
14. OK Figure 16 H2TU C DSI Current Statistics 28 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Monitoring System Activity and Performance Table 9 Acronyms Used on the DS1 Performance History Screens Error Error Acronym Description Acronym Description GV L Gode Violation Line SES P Severely Errored Seconds Path Total BPV count Seconds with SES or CRC ESF gt 320 or FE SF gt 8 Fr Fe ES L h Errored Seconds Line UAS P Unavailable Seconds Path Seconds with BPV gt 1 A second of unavailability based on SES P or AIS gt 1 SES L Severely Errored Seconds Line PRM NE Performance Report Messaging Near End Seconds with BPV plus EXZ gt 1544 The PRM from CPE indicates errors and the signal received from the network at the remote is error free UAS L Unavailable Seconds Line PRM FE Performance Report Messaging Far End Seconds with LOS gt 1 The PRM from the network indicates errors and the signal received from the CPE is error free GV P Code Violation Path B8ZSs B8ZS Monitored Seconds Total count of FE errors for SF or CRC 6 errors Seconds with B8ZS detection when AMI option for ESF is active ES P Errored Seconds Path MSEC 0 Monitored Seconds of the current c d e Seconds with SEF CRC ESF or FE SF gt 1 a FE is a frame bit error b Line refers to the AMI DS1 line code used to transport the payload Only appears on H2TU R Per
15. any loopback is in effect the 30 second time out is inhibited The active loopback and the manual loopback sessions continue until the loopback times out in accordance with the LBTO setting e If there is an active loopback pressing the MODE and SEL pushbuttons for 3 or more seconds terminates any active loopback ends the manual loopback session and returns the display to normal mode To initiate a manual loopback session 1 Press both the MODE and SEL pushbuttons on the front panel for at least 5 seconds The following message appears on the front panel display MAN LPBK NLO 2 Press SEL to activate NLOC The display changes to MAN LPBK NLOC 3 Press MODE to advance to the next available loopback 46 NRE NREM CRE CREM CLO CLOC January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Testing e COL dual loopback at H2TU C e RUL dual loopback at H2TU R 4 Press SEL to activate the selected loopback The previous loopback is terminated Once a loopback is selected and activated the loopback stays active until it times out based on the LBTO setting When a loopback times out the display returns to the normal display mode You can terminate loopbacks manually and exit the MAN LPBK mode by simultaneously pressing the MODE and SEL pushbuttons for 3 or more seconds If no loopback is active the MAN LPBK mode automatically terminates after 30 seconds All loopbacks except dual loopbacks can be initiate
16. creates metallic loopbacks towards both the DSX 1 and the H2TU C 231 If separate plugs are inserted into both LINE jacks with the other end disconnected the BRG jacks can be used to send and receive test patterns towards the DSX 1 GNLB Test Procedures Figure 28 on page 48 is a graphical representation of the various loopback configurations with the associated GNLB commands shown Also refer to Table 16 on page 44 for a description of these commands To perform the GNLB loopback test procedure 1 Have the CO tester send the NREM 3 in 7 inband loopup code for 5 seconds You should be able to observe the NREM message on the front panel display The Status LED on the front panel should be green and the loopback mode should also be identified on the Monitor screen 2 Have the CO tester transmit a DS1 test signal towards the H2TU C 231 and verify that the returned looped signal to the test set is error free 3 If step 2 fails have the CO tester transmit the 3 in 5 inband loopdown code H2TU C 231 List 2 January 9 2002 47 Testing LTPH UM 1109 01 Issue 1 4 Have the CO tester send the NLOC 4 in 7 inband loopup for 5 seconds You should be able to observe the NLOC message on the front panel display The Status LED on the front panel should be yellow and the loopback mode should also be identified on the Monitor screen 5 Repeat Step 2 If the test passes the problem is in the downstream direction If it fails the problem is in
17. of the HiGain HDSL2 circuit SMJK and NREM loopbacks perform the same functions but their initiation differs SMJK indicates that the loopback was initiated by the 2 in 5 inband command NREM on the other hand is initiated by the 3 in 7 inband command or by a command issued from the maintenance terminal or the MODE and SEL pushbuttons Use the inband commands to enable or disable the SMJK loopback options The H2TU C 231 List 2 system setting is normally enabled to recognize all inband SmartJack loopback commands January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Testing Special Loopback Commands In addition to the GNLB loopback command mode a HiGain HDSL2 system can be configured for one of five special loopback command modes These are selected from the maintenance terminal System Settings screen see Table 6 on page 18 or by using the MODE and SEL pushbuttons see Figure 28 on page 48 Once a loopback mode is activated other loopback commands can be sent by a test set connected to the craft port of the H2TU C or H2TU R see Table 17 on page 49 and Table 18 on page 51 for list of SPLB commands A1LB through A5LB are five special addressable repeater loopback modes which are supported by the H2TU C 231 List 2 These loopback modes provide the HiGain HDSL2 system with sophisticated maintenance and troubleshooting tools A1LB A2LB and A5LB are patterned after the Westell addressable DS1 repeater loopbacks A3LB and A4LB ar
18. onboard fuse opens System Alarm Output Pins Pins 20 and 21 on the card edge connector see Figure 31 on page 57 are the H2TU C 231 System Alarm output relay contacts The following notes apply to pins 20 and 21 e The H2TU C 231 Status LED flashes red for the duration of a system alarm condition e Setting the ALM option to DIS only prevents the system alarm relay pins 20 and 21 from closing for a system alarm event The Status LED still flashes red and the ALRM message still displays CRAFT PORT Figure 32 on page 58 shows the pinout for the craft port connector and its connection to a DB 9 or DB 25 connector on a maintenance terminal Terminal DB 9 Connector DTE H2TU C 231 DB 9 Connector DCE TD Transmit Data RD Receive Data GND Terminal DTE I I I I I I I I DB 25 Connector od I I I I Figure 32 RS 232 Craft Port Pinouts 58 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Appendix B Functional Operation APPENDIX B FUNCTIONAL OPERATION ADC HDSL2 technology provides full duplex services at standard DS1 rates over copper wires between an H2TU C and an H2TU R which comprise one HiGain HDSL2 system HiGain HDSL2 systems use Overlapped Pulse Amplitude Modulation Transmission with Interlocking Spectra OPTIS transceiver systems to establish full duplex 1 552 kbps data channels between the H2TU C 231 and a remotely located H2TU R A block diagram of the H2TU C 231
19. the upstream direction Loopbacks Toward Network HDSL2 SPAN All ones HDSL2 SPAN 11000 HDSL2 SPAN 1110000 HDSL2 SPAN DSX 1 Loopbacks Toward Customer CI Customer Interface HDSL2 SPAN HDSL2 SPAN Set the NLBP option to AIS to send AIS indicated by an all ones pattern for any network loopback t A3LB and A4LB loopback codes A1LB A2LB and A5LB loopback codes 4 GNLB loopback codes Figure 28 Loopback Modes 48 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Testing A1LB A2LB and A5LB Test Procedures Using the codes listed in Table 17 a network tester can activate NLOC or NREM loopbacks or SMJK if enabled A tester at the customer premises can activate CLOC CRG or CREM loopbacks All loopbacks shown in Table 17 can also be initiated from the H2TU C 231 front panel MODE and SEL pushbuttons see Setting Options through MODE and SEL on page 9 Table 17 Addressable Repeater Loopback Commands AILB A2LB ASLB Name Binary Code Hexadecimal Equivalent Description ARMING or NI LPBK inband 11000 11000 Arming code ARMING or NI LPBK ESF Data 1111 1111 0100 1000 FF48 Arming code Link LPDN or DISARM inband 11100 11100 Disarming code IR LPDN or DISARM ESF Data 1111 1111 0010 0100 FF24 Disarming code Link IOR LPBK NLOC or CREM 1101 0011 1101 0011 D3D3 NLOC DSX 1 signal is looped back to the network 230 232 bit errors at the H2TU C 231
20. the generic inband Mode loopback codes AiLB and Configures the HiGain HDSL2 system to respond to the inband loopback A2LB codes of the Westell addressable repeater A3LB Configures the HiGain HDSL2 system to respond to the inband loopback codes of the Wescom addressable repeater A4LB Configures the HiGain HDSL2 system to respond to the inband loopback codes of the Wescom Mod 1 addressable repeater A5LB Configures the HiGain HDSL2 system to respond to the inband loopback codes of the Westell Mod 1 addressable repeater SmartJack LPBK ENA Enables the HiGain HDSL2 system to recognize all inband SmartJack SMJK Loopback loopback commands DIS Configures the HiGain HDSL2 system to ignore all inband SmartJack loopback commands Minor Alarm ALM ENA Enables the generation of the output alarm on pins 20 and 21 when a system alarm condition occurs DIS Disables the generation of the output alarm on pins 20 and 21 when a system alarm condition occurs Remote RDA ENA Enables a remote DS1 LOS condition at the input to the H2TU R to generate Disconnect Alarm an LOS alarm AIS or LOS depending on ALMP is sent towards the network DIS Prevents a remote DS1 LOS condition at the input to the H2TU R from causing an LOS alarm The front panel Status LED still flashes red and the ALRM RLOS message displays but the alarm relay contacts do not close and LOS is sent towards the network from the H2TU C instead of AIS DS1 Line Coding DS1 Option The DS1 line c
21. 1 Most VT100 emulation programs support a print screen option For Windows based programs such as Procomm or HyperTerminal do the following 1 Highlight the screen that you wish to print 2 Click File then Print 3 Inthe Print dialog box choose Selection as the Print Range 4 Click OK to print For printing procedures for other programs contact the appropriate vendor IN Menu bar blogga Performance Event Log Config Inventory Report ADC DSL Systems HiGain HDSL2 Voice 800 638 0031 714 730 2400 ID xxXxXxX xXXKX XXXX XXXX 09 01 2001 12 30 01 H2TU C System OK Circuit ID Number Date and Time Logon Device System Status Figure 3 Logon Screen Table 4 Logon Screen Menus Press this To access this Menu Functions key menu M Monitor Monitors loopbacks and alarms and provides a graphical representation of circuit activity including ES UAS SES and line code P Performance Provides performance and alarm histories for current 25 hour 48 hour or 31 day periods for either the DS1 or HDSL2 interface Event Log Identifies the 100 most recent system events and reports the date and time of occurrence Gonfig Provides standard configuration options ADG options BER tester BERT date and time setting and a reset option factory settings Also provides a master clear option that clears all performance alarm and event log entries Selecting the Config menu after a remote logon display
22. 24 The Time Out Override function is only valid for the current active loopback The automatic time out timer is restored during subsequent loopback sessions 5 Once the test is complete do one of the following e If the system is to loop down but remain Armed send the IR LPDN code Ifall the equipment is to be looped down disarmed and returned to normal operation send the disarm inband code 11100 or the ESF DL code FF24 50 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Testing The Armed mode has an automatic time out of 120 minutes but this timer is reset to 120 for any of the following events Loopback terminates manually or time out Query Alternate query Far End activate Another ARM command This timer is inhibited while any of the valid command codes are being sent Once the codes are removed the timer restarts at 120 A3LB and A4LB Test Procedures The H2TU C 231 can be looped back by sending the Addressable Office Repeater AOR LPBK activation code 1111 1111 0001 1110 FFIE for at least 5 seconds This causes the H2TU C 231 to enter the NLOC state The Loopback Time Out setting see Setting the Loopback Time Out Option on page 46 determines the duration of this loopback unless it is overridden by the reception of a second identical 16 bit loopup command before the timer expires When this time out override state exists the only way to loop the H2TU C 231 down is to issue one
23. 24 z PUN HD USER MANUAL H2TU C 231 List 2 Line Unit Product Catalog H2TU C 231 L2 CLEI VACJDLYE LTPH UM 1109 01 Issue 1 Revision History of This Practice Revision Release Date Revisions Made 01 January 9 2002 Initial release Copyright January 9 2002 2002 ADC DSL Systems Inc All rights reserved Trademark Information ADC is a registered trademark of ADC Telecommunications Inc HiGain is a registered trademark of ADC DSL Systems Inc No right license or interest to such trademarks is granted hereunder and you agree that no such right license or interest shall be asserted by you with respect to such trademark Other product names mentioned in this practice are used for identification purposes only and may be trademarks or registered trademarks of their respective companies Disclaimer of Liability Information contained in this document is company private to ADC DSL Systems Inc and shall not be modified used copied reproduced or disclosed in whole or in part without the written consent of ADC Contents herein are current as of the date of publication ADC reserves the right to change the contents without prior notice Inno event shall ADC be liable for any damages resulting from loss of data loss of use or loss of profits and ADC further disclaims any and all liability for indirect incidental special consequential or other similar damages This disclaimer of liability applies
24. Bit Error Rate BER Tester Bipolar Violation Transparency Bridge Controlled Environmental Vault Customer Installation Common Language Equipment Identifier Customer Local Loopback Customer Premises Equipment Cyclical Redundancy Check Customer Remote Loopback Carrier Service Area Code Violation Code Violation Line DS1 Bit Error Rate Threshold DDS DLC DS1 DSX 1 ECI EQL ES ESF ES L ES P FRMG GNLB HBER HCDS HCS HDSL2 HG HMU LA LAIS LATT January 9 2002 LTPH UM 1109 01 Issue 1 Digital Data Service Digital Loop Carrier Digital Signal Level 1 Digital Signal Cross Connect Level 1 Equipment Catalog Item Equalization Errored Seconds Extended SuperFrame Errored Seconds Line Errored Seconds Path Framing Generic Loopback HDSL2 Bit Error Rate Threshold High Capacity Digital Service HiGain Card Shelf High bit rate Digital Subscriber Line 2 HiGain HiGain Management Unit Identification Transmit Intelligent Office Repeater Intelligent Repeater Loop Attenuation Line Alarm Indication Signal Loop Attenuation Threshold H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 LBPV LBTO LED LLOS LOS LOSW LOSWS LPDN LPF LRAI MARG MNGD MSEC NE NEBS NI NID NLBP NLOC NMA NREM NTF OPTIS OUT P PBOG PBON POTS PRM FE PRM NE PWRF H2TU C 231 List 2 Local Bipolar Violation Loopback Timeo
25. C 231 List 2 displays the following parameters e Software version number e List number e Type of frame pattern received from the DSX 1 e Line code of the signal received from the DSX 1 e All user configured parameter settings Loop attenuation threshold setting e Margin alarm threshold setting Disabling an Alarm If the system is in a Minor alarm state the alarm relay can be disengaged by pressing the SEL pushbutton This activates the Alarm Cutoff ACO indication For more information about alarms see System Alarms on page 40 Loopback Modes See Loopback Operation on page 43 for instructions on using the MODE and SEL pushbuttons to activate loopbacks 10 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Provisioning USING A MAINTENANCE TERMINAL Connecting to a Maintenance Terminal The craft port on the front panel allows you to connect the H2TU C 231 to a maintenance terminal ASCII terminal or PC running a terminal emulation program Once connected to a maintenance terminal you can access the maintenance provisioning and performance screens To connect to a maintenance terminal I Connect a standard 9 pin terminal cable to the RS 232 craft port Figure 1 on page 3 on the H2TU C 231 front panel 2 Connect the other end of the cable to the serial port on the maintenance terminal 3 Start a terminal emulation program such as Procomm emulating a VT100 terminal 4 Configure the mainten
26. DS1 output payload for the following alarms e LOSW on any loop e LOS DSI Power Back Off PBON and PBOC Options Power Back Off Network PBON and Power Back Off Customer PBOC allow the HDSL2 circuit to support two transmit power templates default DEF higher level and enhanced ENH lower level These are defined in Section 6 1 4 2 of the ANSI T1E1 4 HDSL2 standard Each HDSL2 receiver detects the level it is receiving during the start up pre activation sequence It then compares this level to the level it should be receiving according to the PBON and PBOC option settings DEF or ENH If the received level is outside the template limits the receiver sends a message to the upstream HDSL2 transmitter requesting the proper level These levels are adjusted only during the start up routine or if the PBON or PBOC option settings are changed during normal operation Since the ENH template levels are up to 15 dBm below those of the DEF template the ENH setting can be used to reduce crosstalk levels into adjacent circuits For example if crosstalk noise is being induced by the H2TU R set the PBOC option to its lower ENH level setting Conversely if the HDSL2 signal at the H2TU R is being affected by crosstalk noise induced from adjacent pairs set the PBOC option to its higher DEF level setting momentarily drop and then re acquire synchronization This setting can also affect the Changing these Power Back Off option settings on a live circ
27. EEEIEE EIES XX XXX XT x Figure 18 H2TU C HDSL2 48 Hour Performance History 30 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Monitoring System Activity and Performance Event Log Config Inventory Report Rlogon H2TU C HDSL2 25 Hour History Page 1 of 9 N ext Page P revious Page C l ear History lt Space gt to cycle through Interface H2TU C HDSL2 choices and lt Enter gt to view Statistics 25 Hour History XXXX XKKKX KKKXXK KKKKX 09 01 2001 12 30 01 2TU C Monitor Mas Event Log Config Inventory Report Rlogon H2TU C HDSL2 Current Statistics Margin dB 16 E5 Interface H2TU C HDSL2 Statistics Figure 20 H2TU C HDSL2 Current Statistics H2TU C 231 List 2 January 9 2002 31 Monitoring System Activity and Performance LTPH UM 1109 01 Issue I Table 10 Acronyms Used on the HDSL2 Performance History Screens Error Acronym Description GV Code Violation Total count of HDSL2 CRC errors ES Errored Seconds Seconds with HDSL2 CRC gt 1 or LOSW gt 1 SES Severely Errored Seconds Seconds with HDSL2 CRC gt 50 or LOSW gt 1 UAS Unavailable Seconds Based on 10 contiguous SES occurrences LOSWS Loss of Sync Word Second Seconds with LOSW gt 1 USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA 32 To access the alarm history screens 1 2 Press P to select the Performance screen Press the SPACEBAR to select an interface H2TU C DS1 H2TU R DS1
28. ENG Loopback to Network DIS Pass on LOS to Network no alarm report Remove alarm pattern l LOS Pass on LOS to ADC Option Network lt gt HDSL2 Standard Option AIS Default configurations are in bold AIS to Network Figure 26 H2TU R LOS and AIS Response Priorities OCT55 TEST PATTERN WITH AMI LINE CODE The OCTS5 test pattern can be used in unframed mode to stress the system and verify data integrity In an SF or ESF framing mode excessive zero anomalies may occur which cause the H2TU C to report ES SES and UAS errors according to ANSI T1 231 1997 42 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Testing LOOPBACK OPERATION HiGain HDSL2 has a family of loopback options for analyzing circuit functionality The loopback signal is transmitted and returned to the sending device for comparison This allows you to verify the integrity of the HDSL2 channels to the H2TU C the H2TU C DSX 1 interface and the DS1 channels to the customer Loopback options include e Generic Loopback GNLB options including the SmartJack SMJK option see Table 16 on page 44 e Special Loopback SPLB options see Special Loopback Commands on page 45 and the following command tables Addressable Repeater Loopback commands A1LB A2LB A5LB see Table 17 on page 49 Addressable Repeater Loopback commands A3LB A4LB see Table 18 on page 51 Loopback commands can be initiated by e Selecting the loopback t
29. H2TU C HDSL2 or H2TU R HDSL2 then press ENTER Press the SPACEBAR until Alarm History is selected then press ENTER Press IN or P to page through the alarm history screens Press L to clear the selected alarm history screen January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Monitoring System Activity and Performance Alarm History at the DS1 Interface The Alarm History screen reports DS1 statistics for the H2TU C Figure 21 and the H2TU R Figure 22 on a continuous basis Table 11 on page 34 displays the types of alarms reported for both the H2TU C and H2TU R Current alarms display in reverse video Monitor Event Log Config Inventory Report Rlogon H2TU C DS1 Alarm History DISABLED OK Interface i H2TU C DS1 Statistics Alarm History 09 01 2001 12 30 01 Figure 21 H2TU C DSI1 Alarm History Screen Event Log Config Inventory Report Rlogon H2TU R DS1 Alarm History 09 01 01 00 37 09 01 01 00 45 OI000000 Use lt Space gt to cycle through Interface H2TU R DS1 choices and lt Enter gt to view Statistics Alarm History XXXX XXXX lt System Alarm Figure 22 H2TU R DS1 Alarm History Screen H2TU C 231 List 2 January 9 2002 33 Monitoring System Activity and Performance LTPH UM 1109 01 Issue I Table 11 DSI Alarm Descriptions Screen Alarm Front Panel Alarm Description H2TU C DS1 ALARMS see Figure 21 on page 33 LLOS LAIS DBER LOF LLOS LAIS
30. IFICATION AND WARRANTY FCC CLass A COMPLIANCE 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 the 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 LIMITED WARRANTY ADC DSL Systems Inc ADC warrants that for a period of sixty months 60 from the date of shipment the hardware portion of its products will be free of material defects and faulty workmanship under normal use ADC s obligation under this warranty is limited to replacing or repairing at ADC s option any such hardware product which is returned during the sixty month warranty period per ADC s instructions and which product is confirmed by ADC not to comply with the foregoing warranty ADC warrants that for a period of 90 days from the date of purchase the software furnished with its products will operate substantially in accordance with the ADC published specifications and documentation for such software ADC s entire liabili
31. ITY 60 The HiGain system uses HDSL2 transmission technology as recommended by Bellcore TA TS Y 001210 HiGain HDSL2 complies with GR 63 CORE TR TS Y 000499 and GR 1089 CORE The H2TU C 231 List 2 is compatible with the following DS1 repeater shelves and associated equipment HiGain Card Shelf HCS 417 23 shelf HCS 418 19 shelf HCS 402 2 slot AT amp T 220 Office Repeater Bay ORB AT amp T Small Cross Section Shelf SXSS Kentrox 220 The ALM option must be disabled DIS to resolve a conflict between the H2TU C alarm relay output and the Kentrox external equalizer output Both use pins 20 and 21 Wescom 342 30 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Appendix D Product Support APPENDIX D PRODUCT SUPPORT ADC Customer Service Group provides expert pre sales and post sales support and training for all its products Technical support is available 24 hours a day 7 days a week by contacting the ADC Technical Assistance Center TAC Sales Assistance 800 366 3891 extension 73000 USA and Canada 952 917 3000 Fax 952 917 3237 Systems Integration 800 366 3891 extension 73000 USA and Canada 952 917 3000 BIA Technical Assistance Center 800 638 0031 714 730 3222 Fax 714 730 2400 Email wsd_support adc com Online Technical Support Online Technical Publications Product Return Department 800 366 3891 ext 73748 or 952 917 3748 Fax 952 917 3237 Email repai
32. Installing the H2TU C 231 List 2 into a Shelf When installing an H2TU C 231 in a chassis be sure to wear an antistatic wrist strap Avoid touching components on the circuit board gt To comply with the intrabuilding wiring requirements of GR 1089 CORE Section 4 5 9 the shields of the ABAM type cables that connect the H2TU C 231 List 2 DSX 1 output ports to the cross connect panel must be grounded at both ends gt 1 Align the H2TU C with the enclosure slot guides and slide the unit in Push the unit back until it touches the backplane card edge connector and the retaining latch on the front panel opens 2 Place your thumbs on the front panel and push the H2TU C into the slot guides until the retaining latch closes This indicates that the card is properly seated H2TU C 231 List 2 January 9 2002 7 Installation LTPH UM 1109 01 Issue 1 VERIFICATION Once the H2TU C 231 is installed verify that it is operating properly To do this monitor the following e Status LED see Figure I on page 3 e Status messages reported by the front panel display see Table 2 on page 5 Verification without an H2TU R Remote Unit If there is no H2TU R remote unit installed I Verify that the H2TU C powers up The front panel display illuminates and reports status messages See Table 2 on page 5 for a list of messages 2 Verify that the H2TU C attempts to communicate with a remote unit status LED flashes red Even if a remote unit
33. MI mode if no B8ZS code is received at the H2TU C input for 5 seconds B8ZS Places both the H2TU C 231 and H2TU R into B8ZS mode AMI Places both the H2TU C 231 and H2TU R into AMI mode H2TU C EQL EXT Disables the H2TU C internal equalizer allowing connection of external Equalization equalizer hardware oe oe 0 Sets the Equalizer to DSX 1 for 0 to 132 feet ualization OL Option on 133 Sets the Equalizer to DSX 1 for 133 to 265 feet page 20 266 Sets the Equalizer to DSX 1 for 266 to 398 feet 399 Sets the Equalizer to DSX 1 for 399 to 532 feet 533 Sets the Equalizer to DSX 1 for 533 to 655 feet H2TU C 231 List 2 Continued January 9 2002 17 Provisioning LTPH UM 1109 01 Issue 1 Table 5 H2TU C 231 List 2 Standard Config Menu Options Continued Front Panel Standard Config er Menu Options Display Selection Description Code H2TU R Line RLBO Sets the DS1 receive level output toward the Customer Interface Cl H2TU R Buildout Line Buildout can only be set through the maintenance screens 0 dB Sets the DS1 RLBO level toward the CI to 0 dB 7 5 dB Sets the DS1 RLBO level toward the Cl to 7 5 dB 15 0 dB Sets the DS1 RLBO level toward the Cl to 15 0 dB Alarm Pattern ALMP AIS Enables the HiGain HDSL2 system to output an AIS payload at its DS1 ports See Alarm for LOSW and DS1 LOS See Figure 26 on page 42 for LOS AIS response Pattern ALMP priorities Option on LOS
34. ONING There are two methods for provisioning Use the MODE and SEL pushbuttons on the front panel of the H2TU C to Set system options Reset the H2TU C to its factory default settings for system options Display system option settings scroll mode Select system loopbacks Use a maintenance terminal VT 100 terminal or a PC running terminal emulation software connected to the H2TU C craft port or to an HMU craft port to access the maintenance screens Figure 3 on page 12 This gives you full access to all H2TU C status history inventory and provisioning screens No dip switches or jumpers are required to provision the H2TU C 231 as it contains a non volatile RAM NVRAM which stores the system option settings System option settings are retained if shelf power is lost or if the H2TU C 231 is unplugged USING THE MODE AND SEL PUSHBUTTONS Setting Options through MODE and SEL To provision the H2TU C 231 List 2 through the MODE and SEL pushbuttons on the front panel 1 Press the MODE pushbutton for second and release it The front panel display alternately shows the first system parameter and its current setting Press the SEL pushbutton to step through all possible settings of the selected parameter After the desired setting has been selected press the MODE pushbutton This updates the currently displayed parameter to the selected setting then advances to the next configurable parameter After the last par
35. Requires external primary protection Internal connected to fuse alarm output on pin 32 40 F to 149 F 40 C to 65 C 5 to 95 non condensing 5 9 in 15 0 cm 1 4 in 3 5 cm 10 0 in 25 4 cm 8 0 oz 0 23 kg 220 mechanics high density shelf 1 552 Mbps Overlapped Pulse Amplitude Modulation Transmission with Interlocking Spectra OPTIS Full duplex One non loaded copper two wire cable pair 16 8 dBm 0 5 dBm at 135Q 0 450 kHz at CO side 16 5 dBm 0 5 dBm at 135Q 0 350 kHz at remote side 1350 35 dB at 196 kHz 135Q 30 sec typical 1 min maximum 10002 1 544 Mbps 200 bps Alternate Mark Inversion AMI or Bipolar with 8 Zero Substitution B8ZS Extended SuperFrame ESF SuperFrame SF or Unframed UNFR 6 VPP pre equalized for 0 to 655 feet of ABAM cable 1 5 to 7 5 dB DSX lt 400 ps Meets MTIE T1 101 requirements 0 2 Ul maximum 0 1 Ul maximum January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Appendix A Specifications POWER CONSUMPTION The three most important power parameters of an H2TU C are its maximum power consumption maximum power dissipation and maximum current drain Table 20 describes line powered and locally powered circuits on 9 kft 26 AWG loops Table 20 H2TU C 231 Power Parameters 48 Vdc Power Heat Dissipation 42 5 Vde Current Consumption Watts mA Watts Remote Power Source Maximum Maximum Maximum Line powered 12 0 7 0 286 0
36. TEN MATERIALS FURTHER ADC DOES NOT WARRANT THAT SOFTWARE WILL BE FREE FROM BUGS OR THAT ITS USE WILL BE UNINTERRUPTED OR REGARDING THE USE OR THE RESULTS OF THE USE OF THE SOFTWARE IN TERMS OF CORRECTNESS ACCURACY RELIABILITY OR OTHERWISE RETURNS ADC continues to repair faulty modules beyond the warranty program at a nominal charge Contact your ADC sales representative for details and pricing MODIFICATIONS Any changes or modifications made to this device that are not expressly approved by ADC DSL Systems Inc voids the user s warranty All wiring external to the products should follow the provisions of the current edition of the National Electrical Code SAFETY STANDARDS COMPLIANCE The H2TU C 231 List 2 has been tested and verified to comply with the applicable sections of the following safety standards e GR 63 CORE Network Equipment Building System NEBS Requirements e GR 1089 CORE Electromagnetic Compatibility and Electrical Safety Binational standard UL 1950 CSA C22 2 No 950 95 Safety of Information Technology Equipment For technical assistance refer to Appendix D Product Support on page 61 ADC DSL Systems Inc 14402 Franklin Avenue Tustin CA 92780 7013 Tel 714 832 9922 Fax 714 832 9924 Technical Assistance Tel 800 638 0031 Tel 714 730 3222 Fax 714 730 2400 oss DOCUMENT LTPH UM 1109 01 ISSUE 1 BL AA DTI kn 1210827
37. X XXXX XXXX 09 01 2001 12 30 01 H2TU C System Alarm Figure 23 H2TU C HDSL2 Alarm History Screen Table 12 HDSL2 Alarm Descriptions Screen Alarm Front Panel Alarm Description HDSL2 ALARMS at the H2TU C and H2TU R LOSW LOSW Loss of Sync Word The HDSL2 loop has lost synchronization MAL XXX MAL Margin The margin on the HDSL2 loop has dropped below the minimum threshold value set for the system xxx denotes either TUC or TUR LA XXX LA Loop Attenuation The attenuation on the HDSL2 loop has exceeded the maximum value set for the HDSL2 loop attenuation threshold xxx denotes either TUC or TUR HBER Xxx HBER Block Error Rate The HDSL2 BER has exceeded the set threshold limits of 10 or 107 xxx denotes either TUC or TUR HDSL2 ALARMS at the H2TU C only SHORT PWR FEED SHRT Indicates a short between the Tip and Ring of the HDSL2 pair GND PWR FEED GND The HDSL2 loop is grounded OPEN PWR FEED OPEN Indicates a line power open condition H2TU C 231 List 2 January 9 2002 35 Monitoring System Activity and Performance LTPH UM 1109 01 Issue I USING THE SYSTEM EVENT LOG TO TRACK EVENTS 36 To view a running log of system events press E to select the Event Log The Event Log displays the date and time of the 100 most recent events the most recent displayed first and provides a description of each event See Table 14 on page 39 for an alphabetical listing of all possible event log messages Press IN o
38. ameter has been selected a CONF NO message appears on the front panel display Do one of the following e To cancel the session without saving the requested parameter changes press the MODE pushbutton or do nothing After 30 seconds the display returns to its normal mode without saving the new changes e To accept the requested parameter changes press the SEL pushbutton A CONF YES message appears and returns to its normal mode after saving the new changes H2TU C 231 List 2 January 9 2002 9 Provisioning LTPH UM 1109 01 Issue 1 Resetting to Factory Default Values All user options for the H2TU C 231 List 2 Table 6 on page 18 can be set to the factory default values using the MODE and SEL pushbuttons To set the user options to their default values 1 Press the SEL pushbutton for 6 seconds until the following message appears DFLT NO 2 Press the SEL pushbutton while the DFLT NO message is displayed The message changes to DFLT YES indicating the factory default values are now in effect and the display returns to the normal mode To terminate the DFLT mode without setting the factory default values do one of the following e Press the MODE pushbutton to return to the normal display mode e Wait 30 seconds for the unit to return to the normal display mode Displaying System Parameter Settings To scroll through the current settings of all system parameters press the MODE pushbutton for 3 or more seconds The H2TU
39. ance terminal to the following communication settings e 9600 baud e No parity e 8 data bits e I stop bit e Hardware flow control to OFF 5 If necessary press CTR R to refresh the logon screen Logon Screen The maintenance terminal screens allow you to monitor provision and troubleshoot an HDSL2 system To select a menu from the logon screen Figure 3 on page 12 do one of the following e Press the underlined letter of the menu Use the gt arrow keys to select the menu and then press ENTER Table 3 summarizes the navigational keys They are also listed in the onscreen Help menu Table 4 on page 12 describes the Logon screen menus Table 3 Navigational Keys for the Maintenance Terminal Screens Key SPACEBAR ENTER ESC or F11 VT100 only T or CTRL E V or CTREU X gt or CTRL 1D lt Or CTRL 15 CTRL R Function Cycle through selections Activate the current setting or choice or display a menu Return to the parent menu Select the submenu or item above the current one or return to the previous menu Select the submenu or item below the current one Select the menu or item to the right of the current one Select the menu or item to the left of the current one or return to the previous menu Refresh the screen a Legacy management units require use of control keys instead of arrow keys H2TU C 231 List 2 January 9 2002 11 Provisioning LTPH UM 1109 01 Issue
40. at 648 events since 12 00 00 AM Performance Report Messaging Far End The count of the PRM FE register at the H2TU R exceeds the 10 BER threshold at 648 events since 12 00 00 AM Bit Error Rate The DS1 BER has exceeded the built in 24 hour threshold limits of approximately 10 xxx denotes either TUC or TUR Loss of Frame lndicates the incoming DS1 payload does not contain the specific frame pattern ESF or SF selected by the FRMG option Only occurs if the FRMG option is set to SF or ESF a Issues a minor alarm sent to the management unit or the backplane if enabled b AIS Cl is a modified AIS alarm pattern Equipment not suited to detect AIS CI still detects this signal as an AIS AIS Cl is sent toward the network indicating that an LOS RLOS or AIS RAIS has been received from the CPE 34 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Monitoring System Activity and Performance Alarm History at the HDSL2 Interface The HDSL2 Alarm History screens report alarms at the H2TU C and the H2TU R Figure 23 shows the H2TU C HDSL2 alarm history and Table 12 below describes the alarms that are reported at the H2TU C 231 or H2TU R Monitor Event Log Config Inventory Report Rlogon H2TU C HDSL2 Alarm History 09 01 01 00 37 09 01 01 00 45 Press C l ear Alarm History Use lt Space gt to cycle through Interface i H2TU C HDSL2 choices and lt Enter gt to view Statistics Alarm History ID xXxXXX XXX
41. ays To Inhibit Select DIS for the DBER system option LOF Loss of Frame The DS1 input does not contain the ESF or SF frame pattern setting of the FRMG option Change FRMG option to AUTO or UNFR PRMF Performance Report Messaging Far End Indicates H2TU R PRM FE BER threshold is exceeded Set DBER threshold to DIS PRMN Performance Report Messaging Near End Indicates H2TU R PRM NE BER threshold is exceeded Set DBER threshold to DIS XXX HBER HDSL2 Block Error Rate The HDSL2 BER has exceeded the set threshold limits of 10 or 107 xxx denotes either TUC or TUR If TUC and TUR occur at the same time then TUC displays Select NONE for the HBER system option XXX MAL 0 Margin Alarm The margin on the HDSL2 loop has dropped below the minimum threshold value set for the system xxx denotes either TUC or TUR If TUC and TUR occur at the same time then TUC displays Set the Margin Alarm Threshold option to 0 zero XXX LA b c d Loop Attenuation The attenuation on the HDSL2 loop has exceeded the maximum value set for the HDSL2 loop attenuation threshold xxx denotes either TUC or TUR If TUC and TUR occur at the same time then TUC displays a The message ALRM displays prior to any alarm message Message displays repeatedly as long as the alarm condition exists and is not included in the priority order Only these alarms asser
42. ce Allows the two DS1 payloads to be monitored Provides splitting jack access to IN and from OUT the HDSL2 span at the DSX 1 interface Breaks the IN and OUT paths to permit test signal insertion and retrieval Craft port RS 232 Provides bidirectional communication between the unit and an external terminal to allow configuration and performance monitoring through the maintenance terminal screens GLEI and ECI bar code label Provides the human readable Common Language Equipment Identifier GLEI code number and the Equipment Catalog Item ECI bar code number List number Identifies the list number of the H2TU C 231 Retaining latch Retains the card in the shelf when pulled up and extracts the card from the shelf when pulled down January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Front Panel Table 2 lists the front panel display messages The four character display reports the code of a pertinent alarm loopback or diagnostic message and in some cases is followed by a second four character message that modifies the first message with a value or current configuration setting Table 2 Front Panel Display Messages Message Full Name SYSTEM ALARM MESSAGES ACO Alarm Cutoff ALRM Alarm Condition Exists DBER DS1 Bit Error Rate HBER HDSL2 Block Error Rate LA Loop Attenuation LAIS Line Alarm Indication Signal LLOS Line Unit Loss of Signal LOSW Loss of Sync Word LRAI Line RAI MAL
43. d by inband commands in the DS1 payload Loopbacks can also be initiated by a command from the HiGain HDSL2 system front panel pushbuttons or maintenance screen selections Therefore whenever a loopback is active the method by which it was activated is indicated in the Monitor screen by the annotation HG or PL adjacent to the identified loopback For example NREM HG indicates that the loopback was initiated by the HiGain HDSL2 system e SMJK loopback commands are only activated by inband commands Dual loopback commands are only activated by the front panel pushbuttons or maintenance screen selections LOOPBACK TEST PROCEDURES The following sections provide step by step test procedures for verifying the integrity of the HDSL2 channels at every module location as well as the DS1 channels to the customer and the local DSX 1 interface General Troubleshooting Tips If trouble is encountered on the DSX 1 interface of the H2TU C 231 verify that the e H2TU C is making a positive connection with its mounting assembly shelf connector e H2TU C internal equalizer is set to the correct distance range per Table 6 on page 18 All equalizers should be set to the distance from the DSX 1 to the shelf The transmit and receive DSX 1 ports have splitting access jacks and miniature 210 series bridging jacks as shown in Figure on page 3 Connecting one cable between the two bridging jacks and another between the two LINE jacks splits the IN and OUT and
44. dB ACQ Acquisition The multiplexers of the H2TU C and H2TU R are trying to establish synchronization over the HDSL2 loop ARM HiGain System Armed Armed to respond to Intelligent Repeater Loop ILR codes BAD RT No Response from H2TU R The H2TU C does not receive any response from the H2TU R and all HDSL2 loop conditions are normal Therefore the integrity of the H2TU R or the HDSL2 loop is questionable FERR Framing Bit Error Occurred Framing bit error occurred at H2TU C DSX 1 input FLDL Flash Download Flash download of firmware upgrades Contact Customer Service for upgrades procedures see Appendix D Product Support on page 61 HES HDSL2 CRC Error H2TU C HDSL2 Loop Cyclical Redundancy Check CRC error LBPV Local Bipolar Violation A bipolar violation has been received at the DSX 1 input to the H2TU C 231 M xx HDSL2 Loop Margin Indicates the power of the received HDSL2 signal relative to noise S N with respect to 21 5 dB Any value of 6 dB or greater is adequate for reliable system operation MNGD Managed The H2TU C 231 is under control of the HMU 319 network management PWR FEED OFF PWR FEED ON SIG Power Feed Off Power Feed On Signaling unit In this state the front panel craft port and pushbuttons are disabled HDSL2 span power has been turned off by setting the PWRF option to off or HDSL2 span power has been turned off by use of the A1LB A2LB or A5LB Intelligent Office Repeater IOR Power Down code I
45. e patterned after the Wescom addressable DS1 repeater loopbacks All five SPLBs have been enhanced to handle the specific requirements of the following HiGain HDSL2 customers e AILB Westell Southwestern Bell e A2LB Westell Southwestern Bell e A3LB Wescom New England Telephone A4LB Wescom Mod 1 New York Telephone ASLB Westell Mod 1 Southern New England Telephone SNET Southwestern Bell Pacific Bell The A1LB loopback selection complies with that proposed for HDSL2 systems in the T1E1 4 92 recommendation with the following additions e Query loopback e IOR Intelligent Office Repeater powerdown e Four loopback time out choices Initiation from either end e Repeating bit error signatures Alternate query loopback These additions make A1LB identical to A2LB A1LB is given a separate identity to allow future DS1 E1 enhancements to be added without affecting A2LB ASLB differs from A2LB in that ASLB does not block the arming code from exiting the H2TU C 231 into the network A1LB and A2LB can be configured to do one of the following e Block the arming code after 2 seconds from exiting the H2TU C into the network and replace it with the AIS code e Unblock the AIS code by executing the Far End Activate code Since A5LB never blocks the arming code from exiting the H2TU C the Far End Activate code is not available in ASLB A3LB differs from A4LB in that A3LB supports the additional 1 in 6 SMJK lo
46. elative to a 107 Bit Error Rate Margin Alarm lIndicates the margin on HDSL2 loop has dropped below the threshold 0 to 15 dB as set by the operator PL displays when the loopback was initiated by a command embedded in the DS1 data path payload PL HG displays when the loopback was initiated from a HiGain HG front panel or by a maintenance terminal loopback command The sum of the Performance Report Messaging Near End PRM NE and Performance Report Messaging Far End PRM FE counts The presence or absence of an alarm condition is indicated on the lower right corner of all screens System OK indicates that there are no alarms present System Alarm indicates the presence of an alarm Refer to Using the Performance Screens to View Alarm Data on page 32 for detailed alarm information H2TU C 231 List 2 January 9 2002 25 Monitoring System Activity and Performance LTPH UM 1109 01 Issue I USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA The Performance screens display e CRC statistics for the HDSL2 or DS1 interface in 31 day 48 hour 25 hour and current history reports e Alarm statistics for the HDSL2 Figure 23 on page 35 or DS1 interfaces Figure 21 on page 33 and Figure 22 on page 33 on a continuous basis To access the Performance history screens I Press P to select the Performance screen 2 Press the SPACEBAR to select an interface H2TU C DS1 H2TU R DS1 H2TU C HDSL2 or H2TU R HDSL2 then pr
47. ended set of options that are only available when using HiGain HDSL2 units exclusively For a description of each option and a list of possible option settings refer to Table 5 on page 17 and Table 6 on page 18 To make changes to these options I Press C to select the Config menu Use the T and 0 arrow keys to select Standard Options or ADC Options then press ENTER Use the arrow keys to select an option Press the SPACEBAR to cycle through the available settings for that option an KK WwW N Press ENTER to activate your choice H2TU C 231 List 2 January 9 2002 15 Provisioning LTPH UM 1109 01 Issue 1 Monitor Performance Event Log Inventory Report Rlogon Standard Options Loopback Timeout LBTO Loop Attenuation Threshold LATT 0 40 argin Threshold MARG 0 15 DS1 Frame Formatting FRMG DS1 Line coding DS1 H2TU C Equalization EQL H2TU R Line Buildout RLBO Alarm Pattern ALMP H2TU R TLOS Loopback TLOS etwork Loopback Pattern NLBP Power Back Off Customer PBOC Power Back Off Network PBON lt Spacebar gt to cycle through option settings and lt Enter gt to activate XXXX XXXX XXXX KXXKX 09 01 2001 12 30 01 H2TU System OK Figure 7 Config Menu Standard Options defaults shown Monitor Performance Event Log sjuk Inventory Report Rlogon Standard Options gt ADC Options Line Power Feed PWRF Remote Provisioning RTPV Bipolar Violation Tra
48. er 17 6 H2TU C 231 List 2 ADC Config Menu Options rrnrnvnnnvrnvvrvvrrvrnvvnrnrnrnevvrerrarvrrerarerrenssnersvernernvennvevvesvsnsvesvre 18 7 DS1 DSX 1 24 Hour PM Threshold sus sveises er sprett E E E REET 21 8 Monitor Screen Descriptions 00 eee not r E e T E EO S 25 9 Acronyms Used on the DS 1 Performance History Screens sasrnannnnnnvvravranvrrennnernenrrnvervennervvennvevvesvrevvesvree 29 10 Acronyms Used on the HDSL2 Performance History Screens errrnvrrnnrnvrvvnnnrevnenvrnrnervrerrarerrrvrverernernvesvesnee 32 11 DS1 Al rm Descriptions ks ET Arsene 34 12 HDSE2 Al rm Descriptions a R AS E Skaaret 35 13 Report Types ioe iesi avis did euo ccs tees A as ROA OEE o EEEE LAA S SES EESE 38 14 Event Log Entry Messages Listener ate tear a E E E AE r a a AA T N IE R E E 39 15 Front Panel System Alarms Summary errvrvvrrvvrrvvnvnnrvrrvrnnvrreravnrrerervevenenrvernvennesnvenvensvevnrevsarvrserasvrsevssvsesvennne 40 16 Summary of HiGain HDSL2 Loopback Codes and Activation Methods ravernvrvvvrvvevvrvrnvvrrrnrverernernververne 44 17 Addressable Repeater Loopback Commands A1LB A2LB ASLB rnervnrvvnvnnevrevrnvvrrernrerrersversvereenssnrrsvennee 49 18 Addressable Repeater Loopback Commands A3LB and A4LB mnvnrnvervrrnrernrrvrevrrvvrrenrverernrrvvesvernverveevvevnen 51 19 BERT Signal Generator Option Settings srrrnrrnvrnvnnnvnrnrrvrrernrnrvenvrnerevernernnernensvnnveesnernrevrarrserasvrsevasnsesvennne 52 20 H2TU
49. es the alarm 35 dB Default value Margin Threshold MARG 0 to 15 dB Determines the minimum allowable margin below which a system alarm can occur The Margin Alarm Threshold can only be set through the maintenance screens Zero disables the alarm 4 dB Default value DS1 Frame FRMG AUTO Configures the HiGain HDSL2 system to operate in an auto framing AUTO Formatting mode in which it continuously searches the input DS1 bit stream for a valid SF or ESF frame pattern Both line and path performance parameters are maintained Unframed payloads will cause the ES P and SES P counters to increment SF Configures the HiGain HDSL2 system to search for the SF framing pattern at its DS1 input ESF Configures the HiGain HDSL2 system to search for the ESF framing pattern at its DS1 input UNFR Configures the HiGain HDSL2 system to operate in an unframed mode This mode disables the auto framing process and forces the system to function as a transparent bit pipe Only line parameters are considered when monitoring DS1 performance DS1 Line Coding DS1 AUTO The H2TU C 231 and H2TU R monitor the incoming DS1 bit streams for the See DS1 Line B8ZS code If the H2TU R detects this code the H2TU C enters B8ZS output Coding DS1 mode The H2TU C reverts back to AMI output mode if no B8ZS codes are Option on received at the H2TU R input for 5 seconds Similarly when the H2TU C page 19 detects the B8ZS code the H2TU R enters B8ZS mode and returns to A
50. ess ENTER 3 Press the SPACEBAR to select the type of statistics Current Alarm History 25 Hour History 48 Hour History or 31 Day History then press ENTER Performance History at the DS1 Interface The Performance History for the DS1 Interface provides 31 day 48 hour 25 hour and current statistics screens for the H2TU C and the H2TU R as viewed from the H2TU C Figure 12 below and Figure 14 on page 27 are examples of DS1 performance history screens at the remote unit Figure 13 on page 27 is an example of DS1 performance history screens at the line unit Refer to Table 9 on page 29 for descriptions of the kinds of errors reported on DS1 interface screens Asterisks indicate performance monitoring from the previous day Monitor Event Log Config Inventory Report Rlogon H2TU R DS1 31 Day History Page 1 of 3 N ext Page P revious Page C l ear History Interface H2TU R DS1 Statistics 31 Day History 09 01 2001 12330201 H2TU C System Figure 12 H2TU R DS1 31 Day Performance History 26 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Monitoring System Activity and Performance Monitor giu e Event Log Config Inventory Report Rlogon H2TU C DS1 48 Hour History Page 1 of 4 N ext Page P revious Page C l ear History Use lt Space gt to cycle through Interface f H2TU C DS1 choices and lt Enter gt to view Statistics Hour History 09701 2001 12430401 H2 Figure 13 H2TU C DSI 48 Hour Perfo
51. formance History screens Appears on the DS1 Current Statistics screens Path refers to the total framed payload being transported between two points f Severely Errored Frame Two or more frame bit errors occurring in a 0 75 ms interval for SF or a 3 ms interval for ESF 15 minute 1 hour 1 day screen H2TU C 231 List 2 January 9 2002 29 Monitoring System Activity and Performance LTPH UM 1109 01 Issue I Performance History at the HDSL2 Interface The HDSL2 interface has 31 day 48 hour 25 hour and current statistic screens for the H2TU C Figure 17 and Figure 18 below are examples of 31 day and 48 hour performance history screens Figure 19 and Figure 20 on page 31 are examples of 25 hour and current statistics performance history screens Refer to Table 10 on page 32 for descriptions of the kinds of errors reported on all HDSL2 performance screens Asterisks indicate performance monitoring from the previous day Monitor Event Log Config Inventory Report Rlogon H2TU C HDSL2 31 Day History Page 1 of 3 N ext Page P revious Page C l ear History Interface H2TU C HDSL2 and lt Enter gt to view Statistics PAMEN EEES 09 01 2001 12 30 01 H2TU C System OK Figure 17 H2TU C HDSL2 31 Day Performance History Monitor Event Log Config Inventory Report Rlogon H2TU C HDSL2 48 Hour History Page 1 of 4 Press N ext Page P revious Page C l ear History Interface H2TU C HDSL2 to view Statistics
52. g Menu Options Front Panel te Menu Display Selection Description Code Line Power Feed PWRF OFF Disables powering to the HDSL2 pair ON Keeps the HDSL2 line voltage at nominal 180 Vdc Remote RTPV ENA Enables remote provisioning Provisioning DIS Disables remote provisioning Bipolar Violation BPVT ENA Enables BPVs and HDSL2 CRC errors at the DS1 input to be converted into Transparency DS1 BPVs at the DS1 output at the distant end This makes HiGain HDSL2 See Bipolar transparent to BPVs Violation DIS Disables BPV Transparency Transparency BPVT Option on page 20 Continued 18 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Provisioning Table 6 H2TU C 231 List 2 ADC Config Menu Options Continued Front Panel Pk il Menu Display Selection Description p Code DS1 BER DBER ENA Enables the fixed 24 hour DS1 BER threshold Threshold DIS Prevents the generation of a system alarm due to DS1 BER See DS1 BER DBER Option on page 21 HDSL2 BER HBER 1E 6 System alarm relay contact closes and the Status LED flashes red when the Threshold Block Error Rate exceeds 10 See HDSL2 BER 1E 7 System alarm relay contact closes and the Status LED flashes red when BER Threshold HBER exceeds 107 Option on page 21 and NONE Prevents generation of a system alarm due to BER System Alarm Output Pins on page 58 Special Loopback SPLB GNLB Configures the HiGain HDSL2 system to respond to
53. he H2TU C BERT Generator screen allows transmission of a selected test signal from the H2TU C towards either the network NET or customer CPE Bit error rates are calculated and display on the Monitor screen It is not recommended using the Bit Error Rate Tester from the remote and line unit at the same time o Press C to select the Config menu 2 Use the T and W arrow keys to select BERT Generator then press ENTER 3 Use the arrow keys to select an option and press the SPACEBAR to cycle through the settings Refer to Table 19 for a list of BERT generator option settings 4 Press ENTER to activate your choice 5 To view BERT status press ESC twice then use the F arrow key to select the Monitor menu 6 Press ENTER You can exit the status screen while signal generation is active Monitor Performance Event Log Juel Inventory Report Rlogon Standard Options gt ADC Options gt BERT Generator gt Generator Pattern Linecode Direction Use lt Spacebar gt to cycle through option settings and lt Enter gt to activate ID XXXX XXXX XXXX XXXX 09 01 2001 12 30 01 H2TU C Figure 29 H2TU C BERT Generator Screen Table 19 BERT Signal Generator Option Settings Option Description BERT Signal Generator Enabled ENA or Disabled DIS BERT Signal Pattern 1 7 pattern 2 8 pattern 3 24 pattern 2237 pseudo random 2701 pseudo random 2 5 pseudo random BERT Signal Linecode AMI or B8ZS BERT Sig
54. hen press L to clear the screen To clear an individual history or alarm screen do the following 1 Press P to select the Performance screen 2 Press the SPACEBAR to select an interface H2TU C DS1 H2TU R DS1 H2TU C HDSL2 or H2TU R HDSL2 then press ENTER 3 Press the SPACEBAR to select the type of statistics Current Alarm History 25 Hour History 48 Hour History or 31 Day History and press ENTER after your selection Selecting 31 Day History allows you to clear the current 25 hour 48 hour and 31 day performance history screens for the selected interface Selecting Alarm History allows you to clear the alarm history screen for the selected interface For information about the DS1 and HDSL2 Alarm screens see Table 11 on page 34 and Table 12 on page 35 4 Press L to clear the screen To clear ALL history alarm and event log screens by this method 1 Press C to select the Config screen 2 Use the T and V arrow keys to select Master Clear 3 Press Y to clear all screens H2TU C 231 List 2 January 9 2002 23 Monitoring System Activity and Performance LTPH UM 1109 01 Issue I MONITORING SYSTEM ACTIVITY AND PERFORMANCE The HDSL2 system provides the following maintenance screens for monitoring system activity and assessing performance The Monitor screens provide a graphical representation of circuit activity and allow initiation of loopbacks e The Performance screens provide current 25 hour 48
55. hour and 31 day performance histories and a continuous alarm history The Event Log provides a description of the 100 most recent events which include their origin time and date of occurrence and message USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY I Press M to view the system diagram Figure 11 shows an armed circuit with an active loopback and alarms Terms used on the system diagram are defined in the onscreen Help menu glossary Abnormal situations are highlighted on the diagram See Table 8 on page 25 for screen field descriptions DS1 errors Armed mode Margin Loop attenuation Alarm type HDSL2 errors pa vas lt lt lt _ lt lt _ 7 7 va 1 Perfozmance Evet Log ceifig Inventc lt y Report logon Help ESF BER Status Fat ESF B8ZS H2C p N g 00 0 H2R AMI pe ARM im 19 ue M 18 J 22250 LA 25 ES ES 1 SES 3 SES 1 UAS 0 P UAS 0 l ES 41 lt ES 1 PRM 0 sEs 41 lt SES 1 ESF vas 38 UAS 0 B8ZS 1 lt V LPF lt a N N Active LooNdack NLOC HG to select LB Rw Loopback Loopback H2TU C towards Network N LPDN NLOC CREM NREM CLOC NN S A S Line code and framing Active loopback System status Figure 11 Monitor Screen Active Loopback with Alarms 2 To initiate a loopback press the SPACEBAR to cycle through the loopback choices Press
56. in black 26 1 27 2 28 3 29 4 30 5 31 6 Fusealarm 32 7 33 8 C Tip 34 9 HDSL2 Span Ring 35 10 36 11 37 12 KEY KEY 38 13 48 Vdc 39 14 40 15 41 16 DSX 1 aL Tip 42 17 Ground N Ring 43 18 Ground 44 19 45 20 Management bus 46 AA Alarms 47 22 48 23 Factory use only DSX 1 Tip1 49 24 OUT Ring1 50 25 Fuse alarm is normally floating and at 48 Vdc when activated System minor alarm contacts pins 20 and 21 are normally open and close upon alarm Figure 31 H2TU C 231 List 2 Card Edge Connector Network Management Control Bus The H2TU C 231 provides a Network Management Control Bus on pin 46 of the card edge connector This allows the various ADC Management System protocols to manage the H2TU C through the HMU 319 HiGain Management Unit Whenever the H2TU C 231 is under management the MNGD message displays periodically on the front panel display Some H2TU C 231 List 2 features are affected when it is under management Consult the management unit user manual for further information see Appendix D Product Support on page 61 H2TU C 231 List 2 January 9 2002 57 Appendix A Specifications LTPH UM 1109 01 Issue 1 Fuse Alarm Pin 32 on the card edge connector is a fuse alarm that is driven to 48 Vdc through a diode whenever the
57. ing the System on page 15 e Clear history alarm and event log screens to remove miscellaneous data during startup see Clearing the History Alarm and Event Log Screens on page 23 Setting Date and Time Monitor Performance Event Log Juel Inventory Report Rlogon Standard Options gt ADC Options gt BERT Generator gt Ped i Date mm dd yyyy B NNEN Time hh mm ss 12 30 01 ID XXXX XXXX XXXX XXXX 09 01 2001 12 30 01 H2TU C Figure 4 Config Menu Date and Time I Press C to select the Config menu 2 Use the T and V arrow keys to select Date and Time then press ENTER 3 Type the date in the format indicated then press ENTER H2TU C 231 List 2 January 9 2002 13 Provisioning Setting Circuit ID Numbers 14 Monitor Performance Event Log Config ghgsehslebay Report Product Information gt H2TU R Product H2TU C 231 H2TU R 402 List 22 1B Sw Ver t 3400 3 00 Build 20 20 Checksum Ox157C Ox157C H2 Xcvr L1 HB2 1 51 L1 HB2 1 51 Serial 01232456789 0123456789 CLEI VACJDLYEAA VAR1JBKEAA Mfg Date 08 28 2001 08 28 2001 Circuit and Unit Identifications Circuit ID HX x X X XX X X XX XX XXX X H2TU R ID gt YYYyy YyYyyy YVYVY YYYYy Circuit Notes ID XXXX XXXX XXXX XXXX 09 01 2001 12 30 01 H2TU C Figure 5 Inventory Screen Press 1 to select the Inventory screen Type the Circuit ID number then press ENTER
58. ining 20 bit errors each including frame bits Those test sets that do not count frame error bits as data bit errors will indicate fewer bits than the H2TU R and H2TU C transmit for a Cl and NI loopback c The H2TU R is assigned the ILR 2 loopback code It responds with 20 bit errors excluding the frame bits d Sending the Far End NI Activate code is not required in A5LB because it is always activated e The IOR Power Down code must remain present for the duration of the powerdown mode When this code is removed the HiGain HDSL2 system returns to its normal unlooped and unarmed state H2TU C 231 List 2 January 9 2002 49 Testing LTPH UM 1109 01 Issue 1 To perform the A1LB A2LB and the A5LB loopback test procedures 1 Send the inband Arming and NI LPBK code 11000 to the H2TU C 231 for at least 5 seconds 2 Monitor the output of the H2TU C 231 for the return of the pattern Return of the pattern indicates one of the following The H2TU R has looped up if the SMJK Loopback option is enabled e An external NID has looped up if the SMJK Loopback option is disabled and the H2TU C and H2TU R have been armed 3 Verify if possible that the H2TU R Loopback LED is either flashing yellow at four times per second indicating that the system is armed or is a steady yellow indicating that it is both armed and in SMJK loopback The H2TU C Status LED also flashes yellow when the system is armed 4 If the Arming code
59. is not present the following events should occur a The front panel display reports various four character status messages b The H2TU C again attempts communication until a remote unit is detected Verification with an H2TU R Remote Unit If an H2TU R remote unit has been installed I Verify that the H2TU C powers up The front panel display illuminates and reports various status messages 2 Verify that the H2TU C attempts to communicate with the remote unit status LED flashes red One of the following occurs a Ifthe remote unit is successfully identified and the HDSL2 loop synchronizes the H2TU C status LED lights a steady green The H2TU C reports normal margin messages on the front panel display b Ifthe remote unit is not identified the H2TU C reports four character status messages The H2TU C attempts communication again and reports four character status messages The H2TU C repeats this cycle until a remote unit is detected 3 Verify that a valid DS1 signal has been applied to the H2TU C and the H2TU R a IfnoDS1 signal is being applied to either the H2TU C or the H2TU R inputs then the appropriate DS1 alarms LLOS or RLOS display on the front panel and the status LED flashes red b Ifa valid DS1 signal is being supplied to the H2TU C and H2TU R then DS 1 alarm indications should be absent and the status LED should be a steady green 8 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Provisioning PROVISI
60. is not returned after 5 seconds the system may be armed but there is no active loopback Z 4 Once armed the H2TU C 231 can be looped back by sending Intelligent Office Repeater IOR LPBK activation code 1101 0011 1101 0011 D3D3 for at least 5 seconds You should observe the following activation response pattern in the order presented a 2 seconds of AIS all ones pattern b 2 seconds of returning data pattern c Logic errors including the frame bit occurring in the returned pattern comprising 231 errors if IOR LPBK H2TU C was sent 20 errors if ILR 2 H2TU R was sent d Normal looped data This error pattern repeats every 20 seconds as long as the IOR loopback pattern is being sent This also applies to ILR Time Out Override and Query commands The H2TU C is now in logic loopback if the IOR NLOC loopback command was sent The Time Out Override command or a Loopdown command can override the selection made for the loopback time out see Setting the Loopback Time Out Option on page 46 If the Time Out Override code 1101 0101 1101 0110 D5D6 is received after activating a loopback then the automatic timed expiration of the loopback is inhibited If this Time Out Override is sent then the only way to loop the H2TU C 231 down is to do one of the following Issue the Intelligent Repeater IR loopdown LPDN code 1001 001 1 1001 0011 9393 e Issue the NI LPDN and Disarm inband code 11100 or the ESF DL code FF
61. is shown in Figure 33 The H2TU C 231 receives a 1 544 Mbps DSX 1 data stream from the DSX 1 digital cross connect interface The H2TU C 231 contains a DS1 frame synchronizer controlled by an 8 bit microprocessor that determines the type of framing on the DS1 stream and synchronizes to it The H2TU C 231 recognizes SuperFrame SF or Extended SuperFrame ESF framing When the data is unframed the H2TU C 231 arbitrarily defines a frame bit D Tip S 42 Ring 43 sc a me EET gt D Fuse alarm 32 180 Vdc T1 B HDSL2 O Power Power Supply Framer Framer Supply Ground isolated and ground fault detect Ground 48Vdc 39 MODE SEL 464 Management bus Tip gt 34 V Pre equalizer gt a LINE HDSL 2 At Select lt Microprocessor X SPAN BRG 7 gt 35 z Ring D sS 49 LEDs RS 232 front panel X 1 Figure 33 H2TU C 231 List 2 Block Diagram TIMING The low loop wander 0 5 UI max of an H2TU C 231 when used with remote units allows the circuit to be used in all critical timing applications including those used to transport Stratum 1 timing GROUND FAULT DETECT The H2TU C 231 has a Ground Fault Detect GFD circuit which detects a ground or a resistive path to ground on any wire of the HDSL2 loop This makes the product compliant with the Class A2 requirements of GR 1089 H2TU C 231 List 2 January 9 2002 59 Appendix C Compatibility LTPH UM 1109 01 Issue 1 APPENDIX C COMPATIBIL
62. n page 38 describes the four types of reports provided by the Report menu To select each individual report do the following I Press O to select Report menu 2 Press the SPACEBAR to select a report 3 Use your terminal emulation software HyperTerminal or Procomm to capture the selected report to your printer or to a file Press ENTER to generate 4 End the captured report 5 Press CTRL R to refresh the Report menu screen Monitor Performance Event Log Config Inventory Rlogon Report Type Full Report Please select report type by pressing lt Space gt then start terminal logging and press lt Enter gt to generate the report ID XXXX XXXX XXXX XXXX 09 01 2001 12 30 01 H2TU C Figure 25 Report Menu Full Report H2TU C 231 List 2 January 9 2002 37 Monitoring System Activity and Performance 38 LTPH UM 1109 01 Issue I Table 13 Report Types Type Full Report Contains the following information e Circuit and unit identifications e Product information e System configuration e Current performance statistics e Alarm history e Performance history e System event log Short Report e Circuit and unit identifications e Product information e System configuration e Current performance statistics System Information Report e Circuit and unit identifications e Product information e System configuration Event Report e Circuit and unit identifications e Product informa
63. nS 59 Appendix C Compatibility 60 Appendix D Product Support 61 Appendix E Abbreviations 62 Certification and Warranty Inside Back Cover January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 List of Figures LIST OF FIGURES 1 H2TU C 231 List 2 Fr nt Panel sss ss csccsdevsensscesdei gaa ce cthedeneensevenbneesvenny cteuseusny ston scnsseevenssacupebunsstegeebenbebesede ekte 3 2 Installing the H2TU C 231 List 2 into a Shelf ee ee eeecsecseceseceeceeeseceeeesessseeeeessessaecaecsaecsessaeeeeeeees 7 JuLogoniSereensu aa Se sscksct ss sssbh sat oo sauet sav EEEE sista seked ces sass dead bs capaasseenks 12 4 Config Menu Date and Time eee cee cee p E a E ARE TAS 13 D Nventory Screen ieii ai si as hoch cucus haces lus sh eE a SE ao Ea eTe VEE Eeo Eeo eta OME EEE EOE IEN SEE ES 14 6 Cont S MENU eose eae aeaee rR E Ne deer ET ENE S PR NR REE eE o N EE a hs EELEE SERE 15 7 Config Menu Standard Options defaults shown ssseeseseesesssresssresesresesresrerrsreersrenresresesrsseserseerrsreerereseeees 16 8 Config Menu ADC Options defaults shown 000 eee cseceseeseceseesecesceseeeeeseeeeceseeeaecaaecaecaaesaecaeeeaeensesees 16 9 Config Menu Set Factory Defaults 0 eee cece eeeceseeeeceseeeeecseeeeecaaesaecsecsaecnecsseesecesesseseaeesaseaeesaeeneesaerae 22 10 Contig Menu Master Cle at ices ennienni E IER EA R T atdet 23 11 Monitor Screen Active Loopback with Alarms sseerrev
64. nal Direction Toward CPE or toward NET BERT Interval 5 minutes 60 minutes Continuous default 52 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Testing TESTING WITH H2TU R BERT GENERATOR The H2TU R BERT Generator screen allows transmission of a test signal from the H2TU R towards either the network NET or customer CPE Bit error rates are calculated and display on the Monitor screen I Press IR to logon remotely then press C to select the Config menu 2 Use the T and V arrow keys to select BERT Generator then press ENTER 3 Use the arrow keys to select an option then press the SPACEBAR to cycle through the settings Refer to Table 19 on page 52 for a list of BERT Generator option settings 4 Press ENTER to activate your choice 5 To view BERT status press ESC twice then using the arrow key to select the Monitor menu press ENTER 6 Press R to return to the H2TU C logon screen You can exit the status screen while signal generation is active Monitor Performance Event Log Inventory Report Rlogon Standard Options gt ADC Options gt Signal Generator gt Generator Pattern Linecode Direction Use lt Spacebar gt to cycle through option settings and lt Enter gt to activate ID xxXX XXXX XXXX KXXX 09 01 2001 12 30 01 H2TU R System OK Figure 30 H2TU R BERT Generator Screen The test pattern is sent out either from the line unit towards the network toward NET or fr
65. ndicates that the HDSL2 loop is not grounded or shorted The transceivers of the H2TU C and H2TU R are trying to establish contact with each other over the HDSL2 loop SYSTEM INFORMATION MESSAGES CODE xxxx FRM Xxxx LATT xx LIST xx MARG xx VER x xx Line Code AMI or B8ZS Frame SF ESF UNFR Loop Attenuation List Number Margin Software Version Number The line code that H2TU C 231 is receiving at its DSX 1 interface if the DS1 option is set to AUTO Otherwise it mimics either of the other two DS1 line code settings Alternate Mark Inversion AMI or Bipolar with 8 Zero Substitution B8ZS Defines the type of frame pattern being received from the DSX 1 SuperFrame SF Extended SuperFrame ESF or Unframed UNFR Current loop attenuation threshold setting is measured in dB List number of the H2TU C 231 Current margin threshold setting is measured in dB Software version number of the H2TU C 231 a System information messages are displayed in scroll mode To scroll through the messages press the MODE pushbutton for 3 or more seconds January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Installation INSTALLATION x Upon receipt of the equipment inspect the contents for signs of damage If the equipment has been damaged in transit immediately report the extent of damage to the transportation company and to ADC H2TU C 231 CO Shelf ny E 627890 LL Figure 2
66. ngs may cause interruption of service To reset the H2TU C 231 List 2 to its original factory defaults I Press C to select the Config menu 2 Use the 1 and WV arrow keys to select Set Factory Defaults then press ENTER 3 Press Y to reset the H2TU C or press IN to cancel this action Monitor Performance Event Log Juel Inventory Report Rlogon Standard Options ADC Options BERT Generator gt Date and Time gt Master Clear Set Factory Defaults SETTING FACTORY DEFAULTS SERVICE MAY BE INTERRUPTED ARE YOU SURE Y N ID XXXX XXXX XXXX XXXX 09 01 2001 12 30 01 H2TU C Figure 9 Config Menu Set Factory Defaults 22 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Provisioning Clearing the History Alarm and Event Log Screens Select Master Clear to clear the History Alarm and Event Log screens after the system has been installed and is functioning properly This removes miscellaneous data acquired during the startup session and ensures collection of accurate and meaningful data thereafter Monitor Performance Event Log Inventory Report Rlogon Standard Options gt ADC Options gt BERT Generator gt Date and Time gt Set Factory Defaults Clear ALL performance alarm and event log entries Are you sure Y N ID XXXX XXXX XXXX XXXX 09 01 2001 12 30 01 HZTU C System OK Figure 10 Config Menu Master Clear To clear the Event Log press E to select the Event Log screen t
67. ns ends LRAI begins ends RAI CI sent from the remote towards the network H2TU C 231 List 2 January 9 2002 39 Testing TESTING LTPH UM 1109 01 Issue I This section provides information about front panel system alarms LOS and AIS response OCT55 test procedure and loopback testing SYSTEM ALARMS Table 15 summarizes all possible HDSL2 system alarms in order of priority as they appear on the front panel When multiple alarms occur the front panel display only reports the highest priority alarm The alarm history screens display alarms also but provide greater detail See Using the Performance Screens to View Alarm Data on page 32 Alarms that are not inhibited will drive the front panel Status LED to a flashing red alarm state Table 15 Front Panel System Alarms Summary Front Panel inti shi Message 2 Alarm Description To Inhibit PWR FEED Power Feed Short A short exists between the Tip and Ring of Cannot be inhibited SHRT the HDSL2 pair PWR FEED Power Feed Ground The HDSL2 loop is grounded Cannot be inhibited GND PWR FEED Power Feed Open A line power open condition exists Cannot be inhibited OPEN LOSW Loss of Sync Word The HDSL2 loop has lost synchronization Cannot be inhibited LLOS Line Unit Loss of Loss of the DSX 1 input signal Cannot be inhibited Signal RLOS 9 Remote Unit Loss of Loss of the H2TU R DS1 input signal Disable
68. nsparency BPVT DS1 BER DBER HDSL2 BER Threshold HBER Special Loopback Mode SPLB SmartJack Loopback LPBK Minor Alarm ALM Remote Disconnect Alarm RDA to cycle through option settings and lt Enter gt to activate XX XXXX XXXX 09 01 2001 12530 01 H2TU C System OK Figure 8 Config Menu ADC Options defaults shown 16 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Provisioning Table 5 describes the Standard Config menu options and Table 6 on page 18 describes the ADC Config menu options Selections in bold type indicate factory default settings Table 5 H2TU C 231 List 2 Standard Config Menu Options i Front Panel Standard Config RENA Menu Options Display Selection Description Code Loopback LBTO NONE Disables automatic time out cancellation of all loopbacks Timeout 20 Sets automatic cancellation of all loopbacks to 20 minutes after initiation 60 Sets automatic cancellation of all loopbacks to 60 minutes after initiation 120 Sets automatic cancellation of all loopbacks to 120 minutes after initiation 8 hr Sets automatic cancellation of all loopbacks to 8 hours after initiation 24 hr Sets automatic cancellation of all loopbacks to 24 hours after initiation Loop Attenuation LATT 0 through Determines the maximum loop attenuation before an alarm is declared The Threshold 40 dB loop attenuation threshold can only be set through the maintenance screens Zero disabl
69. ode option should always be set to conform to the type of DS1 service AMI or B8ZS being provided by the HiGain HDSL2 system The Auto mode which can adapt to either AMI or B8ZS should only be used in applications that require it such as when HiGain HDSL2 acts as a standby circuit to DS1 circuits whose line codes are not known or may be both AMI and B8ZS This is because the Auto mode induces one BPV in the DS1 bit stream whenever it switches from AMI to B8ZS The Auto mode allows both the H2TU C and the H2TU R to set its DS1 output code to that which is being received at the distant end DS1 input This forces the input and the output codes in each direction of transmission to be identical H2TU C 231 List 2 January 9 2002 19 Provisioning LTPH UM 1109 01 Issue 1 H2TU C Equalization EQL Option The equalizer shapes the DS1 output signal of the H2TU C to conform to a very specific pulse template when it arrives at the DSX 1 cross connect point The degree of pulse shaping required is a function of the distance between the H2TU C s equipment bay and the DSX 1 panel Thus the equalizer has six discrete settings in increments of 133 feet to cause the maximized separation of 655 feet Alarm Pattern ALMP Option To improve HiGain HDSL2 compatibility with the switch to protect features used in Digital Loop Carrier DLC feeder applications the H2TU C 231 List 2 has an Alarm Pattern ALMP option that allows you to select either an AIS or LOS
70. om the remote unit towards the customer toward CPE Both test payloads must be looped back so they can be returned to the unit for BER detection BER detection is performed in the line unit for both switch settings Tests done towards the NET must be looped at some point external to the higher circuit Tests done towards the CPE can either be looped back at some external point beyond the remote unit or they can be looped back internally by a higher loopback such as NREM The test payload for the CPE direction also passes back and forth over the HDSL2 link to the H2TU C before it is analyzed for errors H2TU C 231 List 2 January 9 2002 53 Appendix A Specifications APPENDIX A SPECIFICATIONS Power HDSL2 Span Voltage CO Supply Electrical Protection Fusing Environmental Operating Temperature Operating Humidity Physical Height Width Depth Weight Mounting HDSL2 Line Rate Transmission Media Output Line Impedance Maximum Loop Attenuation Start up Time DSX 1 Line Impedance Line Rate Line Format Frame Format Pulse Output Input Level System 54 One way DS1 Delay Wander Looped Wideband Jitter Looped Narrowband Jitter Looped LTPH UM 1109 01 Issue 1 0 or 180 Vdc 5 Vdc 48 Vdc nominal 42 5 to 56 5 Vdc See Power Consumption Maximum Power Dissipation and Maximum Current Drain on page 55 Secondary surge and power cross protection on HDSL2 ports
71. opback command H2TU C 231 List 2 January 9 2002 45 Testing LTPH UM 1109 01 Issue 1 Manual Loopback Session A manual loopback session allows you to select any one of the HiGain HDSL2 loopbacks listed in Table 16 on page 44 with the exception of SmartJack loopbacks which can only be issued by inband commands Setting the Loopback Time Out Option Before initiating a loopback session verify that the Loopback Time Out parameter is set to the desired setting 1 Use the MODE and SEL pushbuttons as described in Setting Options through MODE and SEL on page 9 The Loopback Time Out parameter is also user selectable from the System Settings screen when using a maintenance terminal 2 Select the desired setting NONE time out disabled 20 minutes 60 minutes default setting 120 minutes 8 hours 24 hours Activating Manual Loopback Mode With the exception of SmartJack any of the HiGain HDSL2 loopbacks can be executed using the MODE and SEL pushbuitons When executing a manual loopback session using the MODE and SEL pushbuttons The next loopback option can be displayed by pressing the MODE pushbutton however the previously activated loopback remains active until the SEL pushbutton is pressed which activates the new loopback If neither pushbutton is pressed for a period of 30 seconds and no loopback is in effect the manual loopback session terminates and the display returns to normal mode If
72. oring parameters listed in Table 7 exceed the counts shown for the 24 hour period between 12 00 00 AM through 11 59 59 PM These thresholds correspond to a 10 BER All PM counters clear to zero at 12 00 00 AM or when Master Clear is selected Table 7 DSI DSX 1 24 Hour PM Threshold Parameter Threshold Count OVL BPV 133 40 ES L ES P PRM NE PRM FE 648 SES L SES P 100 UAS P UAS L 10 HDSL2 BER Threshold HBER Option The HBER option permits the monitoring of loop integrity and reporting of alarms when excessive errors are detected The PM primitive used for this purpose is the CRC checksum performed on the HDSL2 frame for both directions of transmission It is therefore called a block error rate rather than the bit error rate associated with the DS1 interface The CRC errors and counts are displayed on the Monitor screen for both the H2TU C and H2TU R The HBER option allows an alarm to be generated if the total number of CRCs at either the H2TU C or H2TU R exceeds the selected BER threshold during the last 1 minute interval e HBER option 1E 6 Alarm is generated if CRC gt 93 HBER option 1E 7 Alarm is generated if CRC gt 9 Once initiated the HBER alarm clears when the CRC count drops below the selected threshold Selecting NONE inhibits this alarm H2TU C 231 List 2 January 9 2002 21 LTPH UM 1109 01 Issue 1 Provisioning Resetting to Factory Defaults Resetting the H2TU C 231 to its original factory setti
73. quipment for a prolonged period store the equipment in its original container H2TU C 231 List 2 January 9 2002 iii January 9 2002 LTPH UM 1109 01 Issue I H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Table of Contents TABLE OF CONTENTS Overview 1 Features hun ee eneeier att 1 Compatibilty lt uvnisuseieuetiknn teser diesel TTE 2 Applications 2esct st Hl aktre 2 Front Panel 3 Installation 7 VenHeatton uusssks krettusstkurs4srgpeausdedaataeusstkA nedla kadtund 8 Verification without an H2TU R Remote Unit esrorrrorrnnrrvrvrvernvrnvervenvvnrvrernerrrevsrenseversvennee 8 Verification with an H2TU R Remote Unit nennrvrrerrrnvrrnorvervrnrnervrarrrerarnrverervrvevernseneesveeven 8 Provisioning 9 Using the MODE and SEL Pushbuttons oornorrnornvrnvrevnrrvrnvrnnvrnrnnrervenrrversnennverneevvervesvrarnrevrasvrserasvsver 9 Setting Options through MODE and SEL orenrorvnnvrnvrnnervrnrrnvrrnennvevvenvvnevrevrnevarerasvsversevsvsvennr 9 Resetting to Factory Default Values ernnrnnrvrnrrnnnrrnvrrnvrnvrrnvnvvnrnrnvravrevravsernevsverveevveenee 10 Displaying System Parameter Settings rronnonrnvnnrnvrnvnrnnnvnnnnrnvnervavervensrnververnersvesvvesveesse 10 Disabling an Alarms siciss rss tucctiste Betis ee tivismeciasy ale 10 Loopback Modesa geste i eis ee E ave trane 10 Using a Maintenance Terminal esnoronrrnorrvrrvvrrnvrvrnvvervrnenenvrnrnavereevaveresnsrneervesvvernervassrasvrserasn
74. r P to page through the event log Press T to return to the top of the log Press L to clear the event log System Event Log Monitor Performance Config Origin Date and I Unit Unit Unit Unit Unit Unit 08 17 0 08 18 0 08 19 0 08 20 0 08 21 0 08 22 0 Line Line Line Line Line Line Inventory Report Page 1 of 7 L2 MAL Alarm L2 L L2 L Alarm L Alarm SW Alarm L2 Unavailability Rlogon L2 Unavailability End End Begin Begin End Line Line Line Line Line Line Unit Unit Unit Unit Unit Unit 08 23 0 08 24 0 08 25 0 08 26 0 08 27 0 08 28 0 DS DS DS1 DS1 Open L2 L Fee 2 LOS Alarm LOS Alarm Open Oo A n A Feed Oo d A SW Alarm L Alarm End Begin Begin Begin End Begin 08 29 0 08 30 0 08 31 0 Remote Unit Remote Unit RU Craft Port HoOooo co Ko 0 cof OO Oo SG Press N ext Page P revious Page xx 9 01 2001 10 06 46 DS1 LOS Alarm DS1 LOS Alarm Event Log Reset T op of Log H2TU C Figure 24 System Event Log January 9 2002 End Begin C l ear Log System OK H2TU C 231 List 2 LTPH UM 1109 01 Issue I Monitoring System Activity and Performance USING THE REPORT MENU The Report menu Figure 25 provides screens containing status and performance monitoring data for line and remote units which can be downloaded to a file for analysis or future reference Table 13 o
75. r amp return adc com Quotation Proposals Ordering and Delivery General Product Information Complete Solutions from concept to installation Network Design and Integration Testing System Turn Up and Testing Network Monitoring upstream or downstream Power Monitoring and Remote Surveillance Service Maintenance Agreements Systems Operation Technical Information System Network Configuration Product Specification and Application Training product specific Installation and Operation Assistance Troubleshooting and Repair Field Assistance www adc com Knowledge_Base index jsp www adc com library1 ADC Return Material Authorization RMA number and instructions must be obtained before returning products All 800 lines are toll free in the USA and Canada H2TU C 231 List 2 January 9 2002 61 Appendix E Abbreviations APPENDIX E ABBREVIATIONS A ACO ADSL AIS ALM ALMP AMI ANSI AOR ARM ASCII AUTO AWG B8ZS B8ZSS BER BERT BPVT BRG CEV Cl CLEI CLOC CPE CRC CREM CSA CV CV L DBER 62 Alarm Cutoff Asymmetric Digital Subscriber Line Alarm Indication Signal Minor Alarm Alarm Pattern Alternate Mark Inversion American National Standards Institute Addressable Office Repeater Armed American Standard Code for Information Interchange Auto Framing Mode American Wire Gauge Bipolar with 8 Zero Substitution B8ZS Monitored Seconds Bit Error Rate
76. res yrei ae eee aE A ERE R E yt ed eecte ters 47 A1LB A2LB and A5LB Test Procedures cccsscsccceceessceceeceesscececeeessseeeceeeesenseeeeeees 49 A3LB and A4LB Test Procedures rennevrnvvrrernnvrrenrrnvvrnervvnrvernververvrervesvrervarsravesserasvsveresen 51 Testing with H2TU C BERT Generator srsnrrnvrnnrnvvrrnrnvrnvvrerranvrvensenvrrnsrnvervennvevvenvrerveevsasvaserasnseer 52 Testing with H2TU R BERT Generator rsnornvnrvrnvvrrnrnvrnrvrnrnarvrrensenvrrnsrnvervesnvesveevrerveevraevsserasnseer 53 Appendix A Specifications 54 Power Consumption araskr ads Reet kuet ea ea es 55 Maximum Power Dissipation erenrnnrrnvrrnvrnvrrvenvvnrnrnvrarvrevrarvrrerarnererarvevsvenneenvennvevvenssesvesvrsevaserasssee 55 Maximum Current Dral esensi eiee oeeie ea e E Eri e cade EE E E E EEEE 55 Loop Attenuation Insertion Loss and Reach ee eeeceesecesecessecenceceeceeaceesaeeeacecenceceeeeaeceeeesaeceaees 56 H2TU C 231 List 2 Card Edge Connector srnnnnvrnvvrneranvrrenrrnvrrnernvrrvervvernnevrernravrarvrverarvsserssvsrsvene 57 Network Management Control Bus 2000 00 cece ceceeceeceeeeeeceseeeeeeseeenecaeesaecaecnaecsecnseeseensenes 57 F sse Alarmi aeoe aeea R E vate eee 58 System Alarm Output PIS rrr tearr esesta Eapro PE a EEEa presens 58 Craft POL users TS 58 Appendix B Functional Operation 59 TIMIDE rasere Stas Aa es E aa Ee Se Er SNOET eVebe 59 Ground Fault Detect scat aien en hen steke Bie e ET EEE EE a E E
77. rmance History Monitor gee Event Log Config Inventory Report Rlogon H2TU R DS1 25 Hour History Page 1 of 9 PRM NE N ext Page P revious Page C l ear History lt Space gt to cycle through Interface H2TU R DS1 choices and lt Enter gt vi Statistics 25 Hour History EDA gt 09 01 2001 12 30 01 U System OK Figure 14 H2TU R DS1 25 Hour Performance History H2TU C 231 List 2 January 9 2002 27 Monitoring System Activity and Performance LTPH UM 1109 01 Issue I Examples of current statistics screens are shown below Figure 15 and Figure 16 show statistics for the DS1 interface at the remote unit and line unit respectively These screens report 1 day 1 hour and 15 minute statistics Monitor Event Log Config Inventory Report Rlogon H2TU R DS1 Current Statistics 00000000 o 00000000 0 0 0 0 0 0 0 0 No PRM Detected No PRM Detected 0 0 1801 1 Press C l ear Current Statistics Use lt Space gt to cycle through Interface H2TU R DS1 choices and lt Enter gt to view Statistics XX XXXX XXXX XXX 09 01 2001 12 30 01 H2TU C Figure 15 H2TU R DS1 Current Statistics Monitor Event Log Config Inventory Report Rlogon H2TU C DS1 Current Statistics oo oo oo co 42 oooon nr 2c amp Mma Oo OO ma ca 0 0 1801 1 Press C l ear Current Statistics Use lt Space gt to cycle through Interface H2TU C DSI choices and lt Enter gt to view Statistics x 09 01 2001 12 30 01 H2TU C System
78. rronrvervrnrrnvrrvnnnnnrvrnvnnrnrevrarvrrersserervsrnvesvennvenvenseevrnerse 24 12 H2TU R DS1 31 Day Performance History rrervorvrnvrrnvrrenrvernrnrrnvernnnvvnrvensvernrevrarvrrerasereevsrnvenvennvesvennvevveevsee 26 13 H2TU C DS1 48 Hour Performance History 00 eee eee ceseeeeceeceeeceeeeseeeneeseecaecaaecsecsacaecsenseceseeeeseesenes 27 14 H2TU R DS1 25 Hour Performance History eenornrnvrnnvrrenrvvrrenrrnvvrnnrnvervennverneevrervarerarvrrerasvevevesnsesvennvevvesnee 27 15 H2TU R DS 1 Current St tistlesiusentkesosake autentisk 28 16 H2TU C DS1 Current Statistics tenses ini ban caisson aoe set kikke leve sn ies 28 17 H2TU C HDSL2 31 Day Performance History 00 eee eee csee ese ceeeeseceeceaeceecseeseceeeeeeeeaeeaeeaessaecneesaeease 30 18 H2TU C HDSL2 48 Hour Performance History 20 0 0 eee ceceseeesceeeeeeceseeeeecaeesaecsecsaecaecaeeeeeeeeseseeeeeeseneeaee 30 19 H2TU C HDSL2 25 Hour Performance History snorrrnvrronrvenrrnvrnnvnnnnnnnrvnnnnernrevvarvrrersrerernsrnvervennvesvennvesveevsee 31 20 H2TU C HDSL2 Current Statisties E a E N A AE E SEES TEE 31 21 H2TU C DS1 Alarm History Screen s ssnnrnannnenanennnnnnnnnnvnnvnnnrannarvrnenarvrarvaverenvsrevennsrnvenvennnennesvvevrasvrnevnevsasvsee 33 22 H2TU R DSI Alarm History SS Clee rsen ee ae eie a E cakes EE E E E R NEE E NE 33 23 gt H2TU C HDSL2 Alarm History ScreeNe eenn nearne a E E seach es E a E Se 35 2A System Event botaire i E E ee 36 25 Report Menu Full Report e
79. s jacks o0NnN O CHANI E Zz m O CLEI and ECI ST Graft port barcode label List number Retaining latch Figure 1 H2TU C 231 List 2 Front Panel H2TU C 231 List 2 January 9 2002 3 Front Panel LTPH UM 1109 01 Issue 1 Table 1 Front Panel Description Front Panel Feature Front panel display Function Displays four character status provisioning and alarm system messages The front panel display illuminates when power is initially applied To conserve power the display only remains on for 5 minutes Using the MODE or SEL pushbuttons reactivates the display and restarts the 5 minute timer Refer to Table 2 on page 5 for a listing of the four character messages MODE and SEL pushbuttons Permits the user options to be monitored and modified without the need of a maintenance terminal Used to initiate all loopbacks and to display DSX 1 line parameters and line unit identity Status LED Off Green Red Flashing red Yellow Flashing yellow The status LED can report the following conditions Line power is off Normal operation Fuse alarm HDSL2 acquisition or system alarm An H2TU C 231 Customer Remote Loopback CREM or a Network Local Loopback NLOC is in effect H2TU C 231 is in an Armed ARM state DSX 1 access jacks BRG LINE Provides non intrusive bridging jack access to IN and from OUT the HDSL2 span at the DSX 1 interfa
80. s the BERT Generator menu which provides access to the BERT Signal Generator configuration submenu I Inventory Provides product information about the various devices that are in the system and lists circuit and device identifications 0 Report Provides four types of reports Full Report Short Report System Information Report and Event Report Continued 12 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Provisioning Table 4 Logon Screen Menus Continued Press this To access this key menu Menu Functions R Rlogon Rlogout Remote logon can be performed from the H2TU C or H2TU R The screen displays Rlogout when the H2TU C or H2TU R is remotely logged on to the other unit at the end of the circuit Remote logon from the H2TU C will permit viewing of the H2TU R and BERT Signal Generator configuration submenu To log off from the remote unit press R Rlogout changes to Rlogon The unit is now locally logged on until R is pressed again to re initiate the remote logon H Help Provides a glossary of terms used in the maintenance screens a list of navigational keys and ADC contact information PROVISIONING TASKS After H2TU C 231 is successfully installed perform these basic provisioning tasks e Set date and time see Setting Date and Time below e Set circuit ID numbers see Setting Circuit ID Numbers on page 14 e Make any necessary configuration changes see Configur
81. sisscestresereirevsroreireerronsiriri orentis vr seussposbensessessasepepundsteeseonscbeebsbobecbusbensetepecaenes 37 26 H2TU R LOS and AIS Response Priorities eee ee ien arie eena eeo E EN EEE EENES 42 27 Loopback Summary sci sssictsveh kiss cesde ies hus Ao beds saves E Gast sev ad pusse posen taken 43 28 Loopback Mod eS Soli tot aes ee i ae ies Ree ee eae 48 29 H2TU C BERT Generator Screen c ssss ccsescses conse sctcs ceca ssecuscnsecescusebessencassasusensesebeusensueshcevcesvscbsenstssbsboenetes 52 30 H2TU R BERT Generator Screens er anene aee EnA dens eksen Seed aeons 53 31 H2TU C 231 List 2 Card Edge Connector escien earar E EEEE TET SEAE EESTE R EDE RE TEES 57 32 RS 232 Craft Port Pmouts arts rre a E E E eat 58 33 H2TU C 231 List 2 Block Diagram 2c iscsssscecionceseecs neceeasteuiugecscesebegees dee stent sve cbebsebcbund secendesbuescoeaacbeemnbed 59 H2TU C 231 List 2 January 9 2002 vii List of Tables LTPH UM 1109 01 Issue 1 LIST OF TABLES viii 1 Front Panel Description sienen in e e a a n ae e a e a E aE e E 4 2 Front Pan l Display Messages snieni ene ea a e E A E A E betes a E E SEE 5 3 Navigational Keys for the Maintenance Terminal Screens ssrrnvrnnnnvnrnrnvrnrnrrvrnvvrrerarnrrrvervvenvernvevveeneesvesvree 11 4 E0g0n Screen Menus ansatte edie ih Renee a ete 12 5 H2TU C 231 List 2 Standard Config Menu Options srrrnrrnvrvvrnnvrrvrnvrnrnervrnrnrrerarnaverrensrevesnsrnvervennverveesvevn
82. sveseee 11 Connecting to a Maintenance Terminal sernvrrnonnvvrvvnvvrrvrnvrnrvrreraverrensrnvesverneesvesvvevveevse 11 Eogon Screen sus se ta cant ze hedrer kepdresadkdskvak ties tees 11 Provisioning T sksu unna eiere TENG 13 Setting Date and Time eennorrnrvrrerrnvrvrnarnvrrvervvevnnnnvernenvarerarnrsesrsvsrnersvsrnvenvensvesvessnesvesvssevasen 13 Setting Circuit TD Numnbersuussssarkesnsvsutdvsssrvae ranere sat EERE 14 Confisurins the System usskasete trakk eee 15 Clearing the History Alarm and Event Log Screens srenrnrrnnvrrenrvvrrenrrnvrrnervvrrvenvvevveevse 23 Monitoring System Activity and Performance 24 Using the Monitor Screen to View System Activity msnnannnnvnnvnnnvnnernnvrnenenvnnnvenvnnveernervrervarravrsserene 24 Using the Performance Screens to View Performance Data resnarvrnvnnnvrrenrnenvrnrrnvrrvernnnvrarnrevsaensee 26 Performance History at the DS1 Interface ssrrsnnrnrnnrnrnnvvrnvrnnvrrerarvrrenrrnvrrnernvrrvensverveerse 26 Performance History at the HDSL2 Interface srrnvrrnrnnnnnnrnvrnvvrrvrnvvrrersrnrrevernerrverveevvesnee 30 Using the Performance Screens to View Alarm Data snrvrnnvrnenrrnrvrnernvrnnvrvvervenvrervervrervervravsssvsen 32 Alarm History at the DSI Interface ssrornnrorronrnorrrnrrnvrrnvnvvnrnnnvvnrnrnvrnrrevrarnernsvsverveevvesvee 33 Alarm History at the HDSL2 Interface ornonoronnrnvrnvnrnvnrnnrnrnvvervrnvravvravnrserernrvnvesvsrneeneee 35
83. t the System Alarm bus on pins 20 and 21 of the card edge connector if the ALM option is enabled When the HDSL2 loop loses sync word LOSW a system alarm condition exists However since the H2TU C 231 enters the Set the HDSL2 Loop Attenuation Threshold option to 0 zero acquiring mode the front panel status LED flashes red and the ACQ or SIG message displays instead of the ALRM message Alarm Option for Digital Loop Carrier DLC Feed To improve HiGain HDSL2 compatibility with the switch to protect features used in DLC feeder applications the H2TU C 231 has an Alarm Pattern ALMP option that allows you to select either an AIS or LOS DS1 output payload for the following alarms e LOSW on any loop e LOS DS1 Retiring System Alarms To retire a system alarm press the SEL pushbutton to execute an Alarm Cutoff ACO An ACO turns the alarm off and replaces the ALRM message with an ACO message The second part of the ALRM message which defines the cause of the alarm remains Both parts of the message remain until the alarm condition clears or another higher priority alarm occurs H2TU C 231 List 2 January 9 2002 41 Testing LTPH UM 1109 01 Issue 1 Remote LOS and AIS Response Figure 26 shows the different ways the H2TU R can respond to the network depending on the configuration of the NLBP TLOS RDA and ALMP configuration options described in Table 5 on page 17 and Table 6 on page 18 H2TU R DS1 Input
84. te Unit Loss of Signal Indicates that no signal is detected at the DS1 input to the H2TU R Causes a system alarm RRAI Remote RAI Indicates an RAI alarm yellow from the CPE with errors from the line unit or network TUC Transmission Unit Central Office Accompanies the HBER MAL and LA alarm and indicates that the alarm has occurred at the H2TU C central office unit TUR Transmission Unit Remote End Accompanies the HBER MAL and LA alarm and indicates that the alarm has occurred at the H2TU R remote unit LOOPBACK MESSAGES CLOC Customer Local Loopback Signal from customer is looped back to the customer at the H2TU R COLB Central Office Loopback Dual loopback at the H2TU C CREM Customer Remote Loopback Signal from customer is looped back to the customer at H2TU C 231 NLOC Network Local Loopback DSX 1 signal is looped back to the network at the H2TU C H2TU C 231 List 2 Continued January 9 2002 5 Front Panel LTPH UM 1109 01 Issue 1 Table 2 Front Panel Display Messages Continued Message Full Name Description NREM Network Remote Loopback DSX 1 signal is looped back to the network at the H2TU R RULB Remote Unit Loopback Dual loopback at the H2TU R SMJK Remote SmartJack Loopback DSX 1 signal is looped back to the network at the H2TU R SmartJack module DIAGNOSTIC MESSAGES A Xx Maximum Loop Attenuation The Attenuation A message appears followed by xx where xx is the highest loop attenuation measured in
85. the RDA Remote Disconnect Signal Alarm option The front panel Status LED still flashes red and the ALRM RLOS message displays to alert you of the LOS state LOS is sent towards the network from the H2TU C This option prevents the common occurrences of a CPE LOS condition from generating recurring alarms and AIS payloads LAIS Line Alarm Indication Indicates an AIS unframed all ones Cannot be inhibited Signal pattern is being received at the H2TU C DS1 input port RAIS Remote Alarm Indicates an AIS unframed all ones Cannot be inhibited Indication Signal pattern is being received at the H2TU R DS1 input port LRAI Line RAl Remote Indicates an RAI alarm yellow from the Cannot be inhibited Alarm Indication at the CPE with an error free signal from the line H2TU R Net signal unit or network RAI signal is transmitted does not have errors towards the network RRAI Remote RAlI Remote Indicates an RAI alarm yellow from the Cannot be inhibited Alarm Indication at the CPE with errors from the line unit or H2TU R Net signal has network errors Continued 40 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Table 15 Testing Front Panel System Alarms Summary Continued Front Panel Message XXX DBER Alarm DS1 Bit Error Rate Description The DS1 BER has exceeded the set threshold limits of approximately 10 xxx denotes either TUC or TUR If TUC and TUR occur at the same time then TUC displ
86. tion e System event log January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Monitoring System Activity and Performance Table 14 Event Log Entry Messages List Event Log Messages DS1 Alarm History reset DS1 PM register reset HDSL2 Alarm History reset HDSL2 PM register reset Loop Down any segment Loop Up any segment Provisioning option change lt provisioning mnemonic gt changed from lt old gt to lt new gt CPE DBER alarm 1 day threshold crossed on any PM data except PRM NE or PRM FE CPE DS1 AIS begins ends CPE DS1 LOS begins ends CPE PRM NE BER alarm at the remote only 1 day threshold crossed on PRM NE trouble on CPE receive Current statistics reset Event Log reset H2TU C Power up down H2TU R Power up down HDSL2 DC pair open begins ends on any segment HDSL2 Ground fault begins ends on any segment HDSL2 HBER alarm threshold crossed on any segment HDSL2 loop attenuation threshold crossed on any HDSL2 Interface I F HDSL2 margin alarm threshold crossed on any HDSL2 I F HDSL2 unavailability begins ends on any segment Master zero reset NTWK DBER alarm 1 day threshold crossed of any PM data NTWK DS1 LOS begins ends NTWK PRM FE BER alarm at the remote only 1 day threshold crossed on PRM FE trouble on NTWK far end NTWK DS1 AIS begins ends Power Feed Open begins ends Power Feed Short begins ends RAI begi
87. tivation Methods LTPH UM 1109 01 Issue 1 Method of Activation Loopback Code Description Test Set Craft Port MODE SEL NLOC 1111000 DSX 1 signal is looped back to the network at the H2TU C X X X 4 in 7 NREM 1110000 DSX 1 signal is looped back to the network at the H2TU R X X X 3 in 7 CLOC 1111100 DS1 signal from the customer is looped back to the X X X 5 in 7 customer at the H2TU R CREM 1111110 DS1 signal from the customer is looped back to the X X X 6 in 7 customer at the H2TU C COLB Dual loopback at the H2TU C DSX 1 signal is looped back to the network at the H2TU C and signal from the customer X X is looped back to the customer at the H2TU C RULB Dual loopback at the H2TU R DSX 1 signal is looped back to the network at the H2TU R and signal from the customer X X is looped back to the customer at the H2TU R SMJK LpUp 11000 SmartJack Loopup or NID payload PL code Invokes X PL 2 in 5 H2TU R loopback towards network SMJK LpUp 1111 1111 SmartJack Loopup or NID ESF DL code Invokes X ESF DL 0100 1000 H2TU R loopback towards network SMJK LpDn 11100 SmartJack Loopdown or NID payload PL code Removes X PL 3 in 5 SMJK NLOC NREM CLOC and CREM SMJK LpDn 1111 1111 SmartJack Loopdown or NID ESF DL code Removes X ESF DL 0010 0100 SMJK NLOC NREM CLOC and CREM 7 44 HiGain systems feature the SmartJack option which can emulate a Network Interface Device NID for loopback testing
88. to all products publications and services during and after the warranty period January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Using This Manual USING THIS MANUAL The following conventions are used in this manual Monospace type indicates screen text e Keys you press are indicated by small icons such as Y or ENTER Key combinations to be pressed simultaneously are indicated with a plus sign as follows CTR ESC e Items you select are in bold e Three types of messages identified by icons appear in text Notes contain information about special circumstances 2 Cautions indicate the possibility of personal injury or equipment damage The Electrostatic Discharge ESD susceptibility symbol indicates that a device or assembly is A susceptible to damage from electrostatic discharge b For a list of abbreviations used in this document refer to Appendix E Abbreviations on page 62 INSPECTING SHIPMENT Upon receipt of the equipment e Unpack each container and inspect the contents for signs of damage If the equipment has been damaged in transit immediately report the extent of damage to the transportation company and to ADC Order replacement equipment if necessary e Check the packing list to ensure complete and accurate shipment of each listed item If the shipment is short or irregular contact ADC as described in Appendix D Product Support on page 61 If you must store the e
89. ty for software that does not comply with the foregoing warranty and is reported to ADC during the 90 day warranty period is at ADC s option either a return of the price paid or b repair or replace of the software ADC also warrants that for a period of thirty 30 days from the date of purchase the media on which software is stored will be free from material defects under normal use ADC will replace defective media at no charge if it is returned to ADC during the 30 day warranty period along with proof of the date of shipment The transportation charges for shipment of returned products to ADC will be prepaid by the Buyer ADC will pay transportation charges for shipment of replacement products to Buyer unless no trouble is found NTF in which case the Buyer will pay transportation charges ADC may use reconditioned parts for such repair or replacement This warranty does not apply to any product which has been repaired worked upon or altered by persons not authorized by ADC or in ADC s sole judgment has been subjected to misuse accident fire or other casualty or operation beyond its design range Repaired products have a 90 day warranty or until the end of the original warranty period whichever period is greater ADC DISCLAIMS ALL OTHER WARRANTIES EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO ITS PRODUCTS AND ANY ACCOMPANYING WRIT
90. uit causes the HDSL2 loop to AN operating margins Bipolar Violation Transparency BPVT Option The H2TU C 231 List 2 improves compatibility with Digital Loop Carrier DLC feeder applications because of its ability to transmit DS1 BPV occurrences between its DS1 interfaces This feature is required to support protection switching in DLC applications Each DLC terminal must be able to monitor the integrity of its Receive DS1 payload and then switch to the protect line when the integrity of the path drops below specific user selected limits An essential requirement of this feature is the need for each DLC terminal to detect BPVs in its DS1 input Standard HDSL systems correct DS1 BPVs at the input and therefore prevent them from being detected by the DLC terminals to which they are connected The H2TU C 231 List 2 and its associated remote units remove this limitation and become BPV transparent by detecting and counting input BPVs at each end and then by replicating them at the DS1 output port of the distant end The BPV count is converted into BPVs at the distant end during the following second at a rate of I BPV every 128 DS1 bits up to a maximum of 12000 BER 7 7 x 10 This maximum rate is more than adequate since it exceeds the maximum 10 BER required by most DLC systems 20 January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue 1 Provisioning DS1 BER DBER Option The DS1 BER alarm occurs when any of the DS1 or DSX 1 performance monit
91. ut Light Emitting Diode Line Unit Loss of Signal Loss of Signal Loss of Sync Word Loss of Sync Word Second Loopdown Line Power Feed Line RAI Margin Threshold Managed Monitored Seconds Near End Network Equipment Building System Network Interface Network Interface Device Network Loopback Pattern Network Local Loopback Network Management and Administration Network Remote Loopback No Trouble Found Overlapped Pulse Amplitude Modulation Transmission with Interlocking Spectra Receive Power Back Off Customer Power Back Off Network Plain Old Telephone Service Performance Report Messaging Far End Performance Report Messaging Near End Line Power Feed RAI RAIS RDA RLBO RLOS RRAI RTPV S N SDSL SES SES L SES P SF SMJK SPLB TLOS UAS L UAS P UNFR January 9 2002 Appendix E Abbreviations Remote Alarm Indication Remote Alarm Indication Signal Remote Disconnect Alarm H2TU R Line Buildout Remote Unit Loss of Signal Remote RAI Rremote Provisioning Signal to Noise Symmetrical Digital Subscriber Line Severely Errored Seconds Severely Errored Seconds Line Severely Errored Seconds Path SuperFrame Remote SmartJack Loopback Special Loopback Transmit Loss of Signal Unavailable Seconds Line Unavailable Seconds Path Unframed 63 Appendix E Abbreviations LTPH UM 1109 01 Issue 1 64 January 9 2002 H2TU C 231 List 2 CERT
92. when the H2TU C 231 is in a location remote to the CO it is serving It determines the battery capacity required to maintain an 8 hour standby battery reserve for emergency situations Battery capacity therefore limits the maximum number of line units that can be installed in a remote enclosure Use the data in Table 20 to perform this analysis MAXIMUM CURRENT DRAIN The maximum current drain is the maximum current drawn from the shelf power supply when it is at its minimum voltage 42 5 Vdc This determines the shelf fusing requirements Use the 42 5 Vdc current data in Table 20 to determine the shelf fusing requirements for your particular H2TU C applications H2TU C 231 List 2 January 9 2002 55 56 Appendix A Specifications LTPH UM 1109 01 Issue I LooP ATTENUATION INSERTION LOSS AND REACH Each loop has no more than 35 dB of loss at 196 kHz with driving and terminating impedances of 135 as shown in Table 21 below This is equivalent to no more than 28 dB loop attenuation Table 21 HDSL2 Reach Chart Cable Gauge Te mr i T ii ah Q per kft 26 0 4 mm 3 88 3 1 9 83 24 0 51 mm 2 84 2 2 12 52 22 0 61 mm 2 18 1 7 16 32 19 0 91 mm 1 54 1 2 23 16 a Insertion Loss 1 25 times loop attenuation January 9 2002 H2TU C 231 List 2 LTPH UM 1109 01 Issue I Appendix A Specifications H2TU C 231 LIST 2 CARD EDGE CONNECTOR Figure 31 shows the card edge connectors on the H2TU C 231 List 2 Active pins are highlighted
93. ype using the MODE and SEL pushbuttons on the H2TU C front panel or the manual loopback LBK pushbutton on the H2TU R e Selecting the loopback type from the Monitor Menu when connected to the craft port of the H2TU C or H2TU R e Entering the loopback code exceptions are COLB and RULB into the test equipment connected to the H2TU C 231 or H2TU R Activate loopback using one of the following Activate loopback using one of the following LBK pushbutton Maintenance Terminal e Test Set MODE SEL pushbuttons Maintenance Terminal NLOC Test Set NREM CREM SMJK CLOC TLOS L H2TU C H2TU R Customer Premises Figure 27 Loopback Summary Generic Loopback Commands The HiGain Generic Loopback GNLB commands allow you to use inband codes to loop up either NLOC 4 in 7 or NREM 3 in 7 towards the network In addition these inband codes loop up CREM 6 in 7 or CLOC 5 in 7 towards the customer Either loopup condition can be terminated looped down with the 3 in 5 SMJK loopdown code All inband codes must be present for at least 5 seconds before the HiGain HDSL2 system responds TLOS is a logic loopback caused by loss of the DS1 input from the CI Figure 28 on page 48 summarizes the available loopbacks in the system and Table 16 on this page summarizes the HiGain HDSL2 generic loopback commands H2TU C 231 List 2 January 9 2002 43 Testing Table 16 Summary of HiGain HDSL2 Loopback Codes and Ac

ADC H2TU-C-231 User's Manual

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