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Verilink SCC 2020 User Manual

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1. State Meaning Solid Green The signal being transmitted by the local DSX 1 equipment is OK or the SCC 2020 card is configured for Mux mode in Mux mode the EQPT LED is always green Solid Yellow The SCC 2020 is in a loop which faces the Equipment port Repeater Loopback or Equipment Loopback Solid Red A continuous error condition exists Loss Of Signal Loss Of Frame Alarm Indication Signal Remote Alarm Indication Signal in the signal or lack of a signal being transmitted by the local DSX 1 equipment Flashing Bipolar Violations CRC 6 Errors or a low density condition Red to Off have been detected in the local DSX 1 equipment transmit signal Flashing The SCC is looped toward the equipment RLB ELB and errors Red to are detected in the data stream being transmitted by the Yellow equipment Not Lit The SCC has no power or if other LEDS are lit the SCC is defective NOTE Solid Red events take priority over Flashing Red events except when a loopback is enabled Verilink SCC 2020 User Manual STAT LED NET LED Diagnostics The STAT CSU status LED is a three color indicator with six possible states as follows Table 5 4 Stat LED States State Meaning Solid Green This is invalid for the Stat LED Solid A test is in progress and no errors are detected a test signal is Yellow currently being transmitted to the circuit by the CSU and the re
2. Thumbwheel Note The SCC Node Controllers all use the same front panel only the model numbers are different The SCC 2020 Node Controller front panel has e Three LEDs status indication e Three pairs of bantam jacks not used e Craft interface 6 pin modular jack terminal connection e Two thumbwheel switches command selection e Momentary push button switch command execution The thumbwheel switches on the front of the SCC 2020 module are Switches provided as a measure of last resort for configuring the SCC and or application modules it controls when terminal access to the Craft interface is not possible Whenever possible it is preferred practice to use the Craft interface a Telnet session or an SNMP manager instead of the thumbwheels For a detailed procedure see Thumbwheel Procedure in Chapter 3 1 4 Verilink SCC 2020 User Manual Overview CIMS for SCC SCC Node Controller front module must be installed with a rear 2020 connector module which provides ports for various interface requirements The following table lists the connector modules that can be paired with the SCC 2020 Node Controller front module Table 1 2 SCC Node Controller Series Connector Interface Modules Summary Connector DSX 1 Port Net Port Ethernet SLIP Front Module Interface Module Connector Connector Connector Connector SCC 2020 CSU and CIM 2022 RJ 48C RJ 48C AAUI 14 DB 9 SNMP node contr
3. 2 no far end polling is not supported G Alarm Determines whether or not alarm messages are presented O Disable Alarm reporting is turned off 1 Enable Alarm reporting is enabled messages will appear on the Craft terminal as alarms occur and clear X exit menu Exit this menu Returns to the SCC 2020 Main Menu Mode CSU Mode Mux Mode The CSU portion of an SCC 2020 a TAC 2010 CSU has three distinctly different modes of operation The mode is determined by the selection for DIU bus on the Configuration Menu In CSU mode the TAC 2010 does not use any data bus in the shelf to pass data to any other module All 24 timeslots in the T1 signal are passed unmodified to the DSX 1 equipment port In the transmit direction the DSX 1 device is the timing source and the CSU behaves as if THRU timing is selected despite what the menu may indicate Any DIU21xx modules present in the shelf are ignored in terms of data flow A TAC 2010 or SCC 2020 is in CSU mode whenever the DIU bus option is set to NONE A typical use of CSU mode would be for voice only PBX applications In Mux mode the DSX 1 equipment port is not used All 24 timeslots of the T1 signal are available for use by some number of DIU 21xx module s assigned to the CSU The CSU is configured to use one of the three data busses in the midplane of the shelf Any associated DIU 21xx modules use this bus to accept receiv
4. NOTE Whenever a T1 CSU reports Signal Loss it will report other alarms as well The other alarms are caused by the signal loss condition Ignore the other alarms and find the cause of the Signal Loss to restore the T1 to service Verilink SCC 2020 User Manual Diagnostics Figure 5 2 Diagnostics Menu X exit menu Y enable loops CSU DIAGNOSTIC FW Rev 1 6 HW Fab 0 8 Type TAC 2010 loro ALARM FRAME LOSS lt lt eq lt lt ee SAS nnno l r SIGNAL LOSS a m CRC ERRORS PULSES lel l ss gt gt eq gt gt He Penn eee ee gt gt net gt gt LOW DENSITY lor Z reset alarm T test time 15 SEC _ eq loops__ __err counter net signals _ net loops __ R repeater A show cntr 1 qrss L line E equip B clear cntr 2 3 in 24 P payload 3 lin 8 U inband up N end tests 4 all 1 D inband down 1 1 NEAR TAC 2010 gt Status Messages The status messages which may appear on the Diagnostics Menu are listed in Table 5 1 below Table 5 1 Diagnostic Menu Status Messages Message Meaning ALARM Yellow Alarm RAI The CSU is receiving a Remote Alarm Indication Signal on the port This signal is sent by a device in a red alarm condition such as AIS LOS or LOF FRAME LOSS Out Of Frame OOF The CSU does not detect a valid framed signal on the port If pulses are also present may indicate receipt of unframed all one
5. D1 the prompt enter port 1 channels gt appears Type 1 12 Verilink SCC 2020 User Manual 2 5 Quick Set Up Now type D2 the prompt enter port 2 channels gt appears Type 13 24 Press ENTER by itself to refresh the display with the DSO assignments Figure 2 4 DIU 2130 Configuration Menu C CSU chn Fp fa 1 2 DIU 2130 T timing source 01 02 03 04 Dp port 01 01 01 01 Lead Toggles Forced Ports Mp mode Sp scram hdlc inv Kp clocking Gp LOS lead Ep enable loop Np near loopback r loopback DIU 2130 gt CONFI GURATI ON DI AGNOSTIC MENU 1 1 CSU 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 01 01 01 01 01 01 01 01 02 02 02 02 02 02 02 02 02 02 02 02 DTR DSR RTS CTS DCD I l Port 1 Port 2 Statistics 56K 56K FW HW ReV 1 6 0 8 N N N N Battery OK ST ST DTE Intf V 35 V 35 NONE NONE Data bus A YES YES Tp test and monitor BEC OFF OFF Pp monitor leads and status ON OFF A Alarm Enable YES 2 6 Lead toggles are used to determine whether the control leads on the synchronous serial interface will function in the normal way or be forced on When the DTE does not assert control leads they can be forced on by typing the three letter abbreviation of the control lead For this example the DTE supports normal control lead operation and the default values
6. apr s les connections de circuits ATTENCION La bateria puede explotar si se reemplaza incorrectamente Reemplace la bateria con el mismo tipo de bateria una equivalente recomendada por el manufacturero Dis ponga de las baterias de acuerdo con las instrucciones del manufacturero ATTENCION Para evitar contacto con circuitos que electrocutan la fuente de alimentaci n debe ser instalada por un t cnico profesional La terminal de la fuente de alimentaci n marcada con el s mbolo de tierra debe ser conectada a un circuito de vuelta por tierra permanente PELIGRO Circuitos que se interconectan a la red de telecomunicaciones deben hacerse de tal manera que cumplan con los requisitos estipulados en las especificaciones EN60950 1992 A4 1997 Secci n 6 2 para los voltages de circuitos interconnectados gt la Red de Telecomunicaciones TNV despues de terminar las connecciones entre os circuitos Verilink SCC 2020 User Manual iii Deutsch Canadian Requirements Safety Precautions VORSICHT Explosionsgefahr bei unsachgem em Ersetzen der Batterie Batterie gleichen Typs und gleicher Qualit t benutzen wie vom Hersteller empfohlen Entsorgung der Batte rie nach Anweisung des Herstellers VORSICHT GEFAHR Um keinen Schlag zu erhalten beim Versagen der electrischen Anlage muss der Stro manschluss von einem Elektriker vorgenommen werden Der elektrische Pol verse hen mit dem Erdsymbol muss
7. 31 32 Valid Intervals in 24 Hours OOOO OOO OOO 2 Oo wo 33 34 35 36 31 38 39 40 41 42 43 44 45 46 47 48 NEAR TAC 2010 gt 24 HOUR ES PERFORMANCE DATA Tech Pubs SCC 2020 4 27 98 14 25 26 1 1 Seconds in Current Interval 627 ES in Current Interval 0 0 49 0 65 0 81 0 0 50 0 66 0 82 0 0 51 0 67 0 83 0 0 52 0 68 0 84 0 0 53 0 69 0 85 0 0 54 0 70 0 86 0 0 55 0 71 0 87 0 0 56 0 72 0 88 0 0 57 0 73 0 89 0 0 58 0 74 0 90 0 0 59 0 75 0 91 0 5 60 0 76 0 92 0 0 61 0 77 0 93 0 0 62 0 78 1 94 0 0 63 0 79 0 95 0 0 64 0 80 0 96 0 Verilink SCC 2020 User Manual 4 3 Performance Monitoring 24 Hour Bursty Bursty Errored Seconds are more severe than errored seconds and Errored Seconds may cause some applications to lose sessions or suffer excessive retransmissions Atypical 24 Hour Bursty Errored Seconds display is shown below in Figure 4 4 Figure 4 4 24 Hour Bursty Errored Seconds 24 HOUR BES PERFORMANCE DATA 4 27 98 14 43 46 Site Name Tech Pubs SCC 2020 1 1 Valid Intervals 96 Seconds in Current Interval 829 BES in 24 Hours 0 BES in Current Interval 0 1 0 17 0 33 0 49 0 65 0 81 0 2 0 18 0 34 0 50 0 66 0 82 0 3 0 19 0 35 0 51 0 67 0 83 0 4 0 20 0 36 0 52 0 68 0 84 0 5 0 21 0 37 0 53 0 69 0 85 0 6 0 22 0 38 0 54 0 70 0 86 0 7 0 23 0 39 0 55 0 71 0 87 0 8 0 24 0 40 0 56 0 72
8. Sending A Pattern 5 8 Testing may generally be divided into two categories tests which are conducted to verify an installation where no known problems exist and tests which result from an effort to troubleshoot a problem which is known to exist Two procedures are described below First in the section Verifying A T1 a method is described to test a T1 circuit when it is expected that no trouble will be found Then in the section Troubleshooting a suggested method for finding T1 problems is detailed For this procedure a pattern will be sent from a local CSU through the entire transmit path of the T1 circuit to a loopback in a far end CSU then back through the other direction of the T1 circuit First a loop up code is sent then a test pattern is transmitted The data received from the T1 circuit will be compared to the data which was transmitted If the data received is identical to the data which was transmitted the T1 is good and may be placed into service To begin the verification use the Inband Up command on the Diagnostics Menu This causes the local CSU to transmit a loop up code in the direction of the far end CSU Figure 5 3 Sending Loop up Code Loop up code gt Local SCC 2020 Far CSU If the loop up code reaches the far CSU and it is optioned to respond to loop up codes then the far CSU enters a line loop condition Now the local CSU receives whatever it is sending NOTE
9. end with any of the following modules e SCC 2130 TAC 2130 TAC 2130 5 or TAC 2130 T e Any other module which is not an SCC 2020 or a TAC 2010 Verilink SCC 2020 User Manual Configuration Far End To access the node at the far end follow these steps Procedure 1 Login to the Craft interface using the password 800far 2 Atthe Main Menu use the F command to begin your far end session A message appears Setup link to Far End Equipment please wait 3 Next a message appears which varies according to the type of shelf Multi line or Dual line detected Poll Far End Equipment Slots 2 4 Then a menu appears Figure 3 6 with the word REMOTE prominently displayed in the shelf slot map area The command prompt also changes indicating FAR instead of NEAR Figure 3 6 Far End Main Menu VERILINK SCC NODE CONTROLLER at 1 1 FW Rev 3 02 Jan 14 1999 FLASH Ethern Slip L Ethern SITE NAME Tech Pubs SCC 2020 2 NODE ID 851 REMOTE lt REMOTE SLOT gt SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13 1 DL C KEY C CSU D DIU F DIU DDS R SRD IDCSU T TU A APS DIU DBU S SMDS L HLM S shelf slot D diagnostics N near element 0 node administration F far element M monitor alarms OFF C configuration A view alarm buffer P performance X log off 1 1 FAR TAC 2010 gt BANK B Serial Number 00655503 et Address AQ 6A 00 0A 00 8F ocal IP Address 192 94 46 37 Subnet
10. 0 62 0 15 0 31 0 47 0 63 0 16 0 32 0 48 0 64 0 1 1 NEAR TAC 2010 gt 4 27 98 15 28 48 65 66 67 68 69 70 71 72 73 74 75 76 71 78 79 80 2 2 2 2 O O O OOOO Oo Oo 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 830 2 2 O 2 O O O OOO OO Oo 0 Reset Registers The Reset Registers command on the Performance Monitoring Menu is used to clear out all of the accumulated information being held in the ESF registers All of the values in the displays available from the Performance Monitoring Menu are reset to zero the number of valid intervals is reset to zero A typical use of this option would be at the completion of an installation If a T1 facility has been serviced and it is believed that any problems have been corrected t may be desirable to reset the registers so that any errors reported are known to be new Verilink SCC 2020 User Manual 4 7 Performance Monitoring 4 8 Verilink SCC 2020 User Manual zu Chapter Using Diagnostics Alarm Status Diagnostics While installing your SCC 2020 or after it has been placed into service the Diagnostic routines allow you to troubleshoot or verify the T1 circuit and Verilink equipment The front panel of the SCC 2020 has three LEDs which give a visual indication of alarm conditions Display elements on the Diagnostics Menu give current information about possible alarm condition
11. Documents Features SNMP Features Overview This User Manual describes the SCC 2020 Node Controller module a component of Verilink s Access System 2000 AS2000 platform The SCC 2020 is an SNMP Simple Network Management Protocol network management module which also functions as a T1 CSU This manual assumes you are already familiar with the standard AS2000 products Where references are appropriate the text refers you to a specific Access System 2000 manual and chapter for greater detail For information on installing and replacing shelves modules and power supplies see the manual AS2000 The Basics NOTE Do not attempt to mix NCM NCC and SCC node controllers in the same node There can be only one node controller in a node Refer to the following related AS2000 manuals e SCC 2130 User Manual documents the SNMP controller version of the TAC 2130 Integrated T1 DSU CSU IDCSU e AS2000 The Basics provides general information about Verilink products e The DIU 2131 High Low Module User Manual documents a specific application consisting of an SCC 2020 used with a DIU 2131 two port high speed low speed DSU module The SCC 2020 SNMP Controller and Channel service unit module includes an embedded SNMP agent Adding an SCC moduleto an AS2000 node allows network managers to interface their SNMP Manager with the AS2000 node This provides full control for configuration management performance monitoring and
12. SCOP ar na nahen 1 1 Related Verilink Documents mann nnnnnnnnnnnnnnnnnn nn nnnnn 1 1 Features ar ee ADS TOSA een 1 1 Other Features anna nn BE RI 1 2 Types of SCC Node Controllers u0s44ssnennnnennnnnnnnnnnnnnnnnn anne nn 1 2 Compatible Modules ss 1 3 EOMPONENESS Arena Dag d dau eres pata Poeun TESS nn eine un lue 1 3 Front and Back Modules is 1 4 SCC Front Panel anne a 1 4 Thumbwheel Switches iii 1 4 CIMS FO SECIZOZO 4 ae a RI ink 1 5 Quick SetU prs caveat A aia A a ane aa eee de MR Ge 2 1 Connect to Craft Porta men Let Re hag Deda 2 1 LOGIN 22 id das 2 1 CSU Con Fi Qurath gM a oi E Pee 2 2 Configuring the DIU 2130 iii aces Ae ea ene ee 2 4 EONTIYURAEION mata iaa 3 1 Preliminares css AAA A ete dr eden Manda A da de 3 1 Using the Craft Interface a haa este aca nen a ernten 3 1 Verilink SCC Craft Port Terminal Setup oocccoocccccnnccconcnnconcnnnonacinonaninnnanins 3 1 EO QOING ON ranas a nha ng cera ata ca 3 2 The Configuration Menu usines 3 4 Configuration Menu Commands iocccccccccnnnccnnnnnnnonnnanonnnnnnnnnnnnnnrnnnnnrnnnnnnnas 3 5 MOC ds O A a teen me mate 3 9 Node Administration esisiini a i a a aa a nennen nenne E a 3 10 Node Administration Menu oocccccnccccnnoccnnnncnnnnncncnnnnncnnnncnnnnrnnnnanncnnaninns 3 10 Modem Configuration coincida FAAA Eaa ina 3 13 Far End Management a his debi ee ee pen 3 16 Requirements ltd a dn 3 16 EXEEDEIONS rt en ee Aare 3 16 Ear End Procedu te ii aid
13. maintenance through SNMP Gets Sets and Traps The embedded agent supports Verilink Enterprise MIBs and proprietary MIBs for extended network management functions Users can perform SNMP Gets and Sets as well as receive Traps when alarm threshold criteria have been met Verilink SCC 2020 User Manual 1 1 Overview Other Features Types of SCC Node Controllers 1 2 The SCC modules are compatible with HP OpenView and other SNMP network management applications The SCC Node Controller series also features the following e Three subsets of the TCP IP protocol are supported Telnet is available as a means of reaching the Craft interface FTP is supported for introducing firmware upgrades and SNMP is available as a means of management All three of these protocols may be used through either the Ethernet or SLIP interfaces e ASCII Craft interface e Local access by direct connection to the Craft port Remote access via Telnet over Ethernet or SLIP e Up to two simultaneous Craft interface sessions over Telnet e Multiple simultaneous SNMP sessions up to 10 e Dual flashbanks to support firmware download The SCC 2020 has two flashbanks for housing separate software versions Before shipment Verilink loads both flashbanks with the same version of software You can download subsequent software releases into either flashbank You can choose which version of software to run for any session by booting from the desir
14. regenerate CRC 3 6 regeneration 5 11 repeater 5 4 Repeater Loopback 5 10 reset alarm 5 4 reset com ports 3 13 Reset Registers 4 7 reset the test error counter 5 4 router 3 12 S SCC 2130 1 1 select D amp I DSOs 3 10 Sending A Pattern 5 8 Sending Loop up Code 5 8 Sendto new socket failed 3 11 SES 4 2 Set default commands 3 15 shelf slot 3 4 shielded twisted pairs 5 11 show cntr 5 4 SIGNAL LOSS 5 3 Signal Loss 5 2 site name 3 12 Slip Configuration 3 12 SLIP Peer address 3 12 smart jack 3 7 SNMP 1 1 SNMP community string 3 13 Verilink SCC 2020 User Manual SNMP managers 3 13 ST vs INV ST 5 12 Status Messages 5 3 Subnet Mask 3 12 T T1 CSU 3 4 T1 framing 3 6 T1 loopback plug 5 12 T1 403 3 7 TAC 2010 1 2 2 1 TAC 2130 1 2 TCP IP 1 2 Telnet 1 2 Terminal 2 1 Terminal Setup 3 1 Test Error Counter 5 9 test error counter 5 4 test fails 5 9 test passes 5 9 test time 5 4 THRU 3 8 time 3 11 Tips 5 10 TIU 2850 3 8 Transcode Yellow Alarms 3 6 Transmit Clock 3 8 trap host ip address 3 13 trap hosts 3 13 Troubleshooting 5 10 Troubleshooting Tips 5 11 U UAS 4 2 Unavailable Seconds 4 6 UNIX commands 3 2 unprivileged password 3 13 V Verifying A T1 5 8 view alarm buffer 3 4 Y yellow alarms 3 6 YOUR PASSWORD 3 2 Verilink SCC 2020 User Manual Index 3 Index 4 Verilink SCC 2020 User Manual October 1999 P N 880 503268 001 B1 VERILINK VERILINK CORPORATION 127 JETPLE
15. sure you have an FTP server program Such programs often distributed as shareware may be found on World Wide Web download sites Basic TCP IP terminology How to use FTP How to use the specific FTP server program you have selected The IP address of the FTP server The specific path and filename to the new SCC firmwarefile If need be install the FTP server program which you have selected If need be copy the file containing the new SCC firmware to a known location path on the computer running the FTP server application Document the CSU configuration of the CSU portion of the SCC card being upgraded Verilink SCC 2020 User Manual Overview Downloading Version 1 69C to Flashbank A You will need to know Step By Step Configuration SCC firmware can be upgraded by using FTP to transfer the new executable files into the card The procedure will vary according to what version is currently installed and what new code version is to be used In most cases it is advisable to download new versions of SCC code to flashbank B only leaving the original code as shipped in flashbank A In this way the user is always able to fall back to the known code revision if a problem is noted with the upgrade Due to increases in file size since version 1 81 of SCC firmware the executable is distributed in compressed form After the code has been transferred to the SCC using FTP it must be decompressed Earlier versions of S
16. 0 88 0 9 0 25 0 41 0 57 0 73 0 89 0 10 0 26 0 42 0 58 0 74 0 90 0 11 0 27 0 43 0 59 0 75 0 91 0 12 0 28 0 44 0 60 0 76 0 92 0 13 0 29 0 45 0 61 0 77 0 93 0 14 0 30 0 46 0 62 0 78 0 94 0 15 0 31 0 47 0 63 0 79 0 95 0 16 0 32 0 48 0 64 0 80 0 96 0 1 1 NEAR TAC 2010 gt 4 4 Verilink SCC 2020 User Manual 24 Hour Severely Errored Seconds Figure 4 5 24 Hour Severely Errored Seconds Performance Monitoring Severely Errored Seconds pose a serious threat to the integrity of your data Since a T1 offers a maximum of 1 536 Mbit s an error rate over 320 per second becomes significant Severely errored seconds may also result from Out Of Frame OOF conditions During an OOF event all user data is lost A typical 24 Hour Severely Errored Seconds Report is shown below in Figure 4 5 96 0 33 34 35 36 31 38 39 40 41 42 43 44 45 46 47 48 Site Name Valid Intervals SES in 24 Hours 1 0 17 0 2 0 18 0 3 0 19 0 4 0 20 0 5 0 21 0 6 0 22 0 7 0 23 0 8 0 24 0 9 0 25 0 10 0 26 0 11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0 32 0 1 1 NEAR TAC 2010 gt OOOO OO O O O O Oo Oo co oOo Oo 24 HOUR SES PERFORMANCE DATA Tech Pubs SCC 2020 Seconds in Current Interval in Current Interval SES 4 27 98 1 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
17. 2 AMI B8ZS AMI DSX 1 equipment on a B8ZS T1 equipment settings 3 B8ZS AMI B8ZS DSX 1 equipment on an AMI T1 this InM d h selection is problematic unless the equipment is configured n Mux mode where to use only 56K of each DSO instead of 64K per DSO no DSX 1 equipment is used only the 4 B8ZS B8ZS B8ZS DSX 1 equipment on a B8ZS T1 second parameter is meaningful J jitt buf Jitter Buffer selects 1 16 16 Sets both buffers to 16 bit depth less resilience the size of the jitter to jitter and less delay buffer in bits on the 5 DSX 1 and Network 2 40 16 Sets DSX 1 side to 40 bits and network side to sides of the CSU 16 bits Larger buffers are 3 16 40 Sets the DSX 1 side to 16 bits and the network more resistant to a side to 40 bits jittery signal smaller 4 40 40 Sets the default value of 40 bit jitter buffer on buffers introduce both sides of the CSU less delay R eq crc Selects whether or 1 PASS same type framing on both sides not the CSU will a regenerate the CRC 6 2 NET TO EQ ESF equipment on a non ESF T1 error checking used a in ESF framing on 3 EQ TO NET non ESF equipment on an ESF T1 both one or no 4 BOTH use in Drop and Insert mode if equipment and sides Tl are both ESF Y xcode yel Selects whether 1 OFF use for same type framing on both sides or to yellow alarms will be have the CSU drop yellow alarms with dissimilar framing translated from the
18. D4 bit 2 method to 2 NET TO EQ ESF equipment and D4 T1 the ESF FDL method 3 EQ TO NET D4 equipment on an ESF T1 4 BOTH not used 3 6 Verilink SCC 2020 User Manual Configuration Menu Option Description Instructions M distance Cable length option Choices are 1 0 133 2 133 266 3 266 399 4 399 533 used to increase DSX 5 533 655 select the value that most nearly equals the 1 signal strength length of the cable between the CSU and the local DSX 1 when DSX 1 cable is equipment long L IbO Line build out is used 1 0 db use this value if a smart jack network to reduce the signal termination device has been installed by the telephone strength being sent carrier or if the first active device on the T1 is between to the T1 network 2 000 and 3 000 feet away New T1 circuits 2 7 5 db use this value only if there is no smart jack and installed by a the first repeater is 1 000 to 2 000 feet away telephone compan in USA will N 3 15 db use this value only if there is no smart jack and smart jack use Odb the first repeater is zero to 1 000 feet away K keep alive Selects the method 1 none no method of keep alive is used in the absence of used to guarantee a valid framed DSX 1 signal do not use this value on a T1 sufficient pulse circuit provided by a telephone company density is sent to the T1 ES the DSX 1 2 loop when the DSX 1 signal fails
19. DIU 2140 59 SCC 2020 Send in band CSU loop up code to far end CSU this should cause the TAC2010 far end CSU to enter a Line Loopback condition TAC 2130 60 SCC 2020 Send framed QRSS to far end TAC 2010 TAC 2130 61 SCC 2020 Stop QRSS pattern and send inband CSU loop down code to far end TAC 2010 TAC 2130 62 DIU 2140 Use timeslot 24 on the assigned CSU set all 5 data ports to 9 6 kbit s 63 DIU 2140 Selects split timing RX clock TX clock typical value 64 DIU 2140 Selects single source timing RX clock TX clock 65 DIU 2140 Sets DTE timing option for all synchronous data ports to ST 66 DIU 2140 Sets DTE timing option for all synchronous data ports to ST 67 DIU 2140 Sets DTE timing option for all synchronous data ports to TT 68 DIU 2140 Sets RTS to normal operation for synchronous data ports data is transmitted ONLY if the DTE asserts RTS ignored in Async default 69 DIU 2140 Sets RTS to forced on requires version 1 1 DIU 2140 firmware data is sent regardless of actual state of RTS from DTE this behavior always applies to Async ports 80 DIU 2130 Set Data Port 1 to tail circuit timing Note that TAC 2130 T and TAC TAC 2130 2130 S modules do not support tail circuit timing external timing or TIU 2850 timing 81 TAC 2130 Canned configuration 1 assigns all 24 timeslots to data port 1 DIU 2130 82 TAC 2130 Canned configuration 2 assigns timeslots 1 12 to data port 1 and DIU 2130 timeslots 13 24 to data p
20. Whenever the Inband Up command is used to send a loop up code to a far end CSU the Inband Down command must be used later to send the loop down code Otherwise the far end CSU will be left in a looped condition Begin transmitting a test pattern by using the qrss command Verify that the pattern received matches the pattern being transmitted by using the show cntr command Verilink SCC 2020 User Manual Results Test Failures Diagnostics Figure 5 4 Sending And Receiving Pattern Test pattern sent P oi SCC 2020 Far CSU ends pattern Test pattern received Checks pattern p MEN LIDE LOAR If the QRSS pattern is received with no errors the Test Error Counter will not increment If the Test Error Counter does increment one of the following applies e The far end CSU never went into a loopback and therefore the test pattern being transmitted is not being received at all This would cause the Test Error Counter to increment at a rapid and steady rate e The far end CSU did go into a loopback but the pattern received at the local SCC 2020 does not match the pattern transmitted In this case the Test Error Counter might increment in uneven amounts at virtually any rate If the test passes consider doing the same test with a different pattern Some patterns will fail on a T1 which passes other test patterns See Table 5 2 for details on the various patterns If the test fails consider one o
21. an inter exchange carrier long distance company is Verilink SCC 2020 User Manual 2 3 Quick Set Up Configuring the DIU 2130 2 4 Configuration Menu involved When the carrier provides a timing signal all other devices on the T1 must use that signal to derive their transmit clock Use the B command for the DIU timing options and select 5 for NET recovered NETwork clock 5 There are no more changes required to the default CSU configuration in order to configure this example Use the X command to return to the SCC 2020 Main Menu For this example the SCC 2020 is used with a DIU 2130 module in the right hand side slot 2 of a Dual line Shelf The SCC 2020 connects directly to the T1 circuit and provides CSU functionality The DIU 2130 presents two synchronous Serial interfaces for connecting the Data Terminal Equipment DTE and provides DSU functions Before any module may be optioned it must first be selected When you first logged in to the SCC 2020 the default was that the SCC was selected To configure the DIU 2130 first select it The S shelf slot command is used to navigate from one module to another Type S and press ENTER The prompt for selecting another module appears Enter shelf slot gt For this example the node has only one shelf shelf 1 and the DIU 2130 is in slot two of that shelf Type 1 2 and press ENTER The prompt line returns as 1 2 DIU 2130 UPDATE gt this
22. from 3 13 flash download 3 13 FOREVER 5 4 format 3 6 FRAME LOSS 5 3 framed pattern of all ones 5 5 framing 3 6 frequency will drift 5 13 Front Panel 1 4 Front Panel LEDs 5 6 G Gateway IP address 3 12 H Hangup 3 15 host configuration for Ethernet 3 12 IDCSU 1 2 idle code 3 7 inband down 5 5 inband up 5 5 INT clock 3 8 internal oscillator 3 8 Jitter Buffer 3 6 K keep alive 3 7 L IbO 3 7 least serious 4 3 LED blinks amber to red 5 10 EQPT LED 5 6 NET LED 5 7 STAT LED 5 7 Line build out 3 7 Line loopback 5 5 LOFC 4 2 log off 3 4 Logging On 3 2 Login 2 1 Loopback Plug 5 12 loop down code 5 5 loop up code 5 5 loss of all user data 4 7 Loss Of Frame Count 4 2 LOW DENSITY 5 3 Is 13 20 M Main Menu 2 2 Main Menu Commands 3 4 Index 2 Mode 3 8 Modem Configuration 3 12 Modem Configuration Commands 3 15 Modem Configuration Menu 3 13 Mux Mode 3 9 Mux mode 3 6 3 8 N NCM 1 1 near element 3 4 network provides a clock 3 8 network termination device 3 7 node 3 4 Node Administration 3 10 Node Administration Menu 3 11 node id 3 11 O One Hour Network 4 2 ONE HOUR PERFORMANCE DATA 4 2 P password prompt 3 2 Payload loopback 5 5 Performance Response Messages 3 9 phase relationship 5 12 Phone number to call 3 15 poll far end 3 9 privileged password 3 13 prm 3 9 pSH gt 3 2 PULSES 5 3 Q QRSS test 5 4 Quick Set Up 2 1 R Rebooting an SCC 2020 3 11
23. indicates that the DIU 2130 has been selected NOTE Whenever the word UPDATE appears in the command line prompt it indicates that some information has changed since the screen was last refreshed To refresh the screen with current information simply press ENTER Type C and press ENTER to select the DIU 2130 Configuration Menu There is a brief delay as the SCC module attempts to communicate with a CSU module in Shelf 0 Slot O since this is the default value for CSU assignment in a new DIU 2130 module An address of Shelf 0 Slot 0 is not possible Modules are shipped this way in order that they may be added to a shelf without interfering with any existing applications An error message appears No response from csul 0 0 This error message in this case means that the DIU 2130 is new and has never been assigned to any CSU module in any slot of any shelf Ignore this error message Then the DIU 2130 Configuration Menu is displayed Verilink SCC 2020 User Manual Quick Set Up Figure 2 3 DIU 2130 Configuration Menu DIU 2130 C CSU T timing source chnl 01 02 03 04 Dp port Lead Toggles Forced Ports Mp mode Sp scram hdic inv Kp clocking Gp LOS lead Ep enable loop Np near loopback Fp far loopback 1 2 DIU 2130 gt CONFI GURATI ON DIAGNOSTIC MENU CS 05 DTR DSR RTS CTS DCD I Port 1 Port 2 Statistics 56K 56K FW HW Rev 1 6
24. is shown below in Figure 5 1 In this example the word PULSES appears on both the equipment left hand and network right hand sides of the display When the words PULSES appears alone that interface has no alarms Figure 5 1 Diagnostics Menu CSU DIAGNOSTIC X exit menu __eq loops__ R repeater E equip 1 1 NEAR TAC 2 FW Rev 1 6 HW Fab 0 8 Type TAC 2010 PULSES sn gt gt net gt gt Y enable loops Z reset alarm T test time 15 SEC __err counter _ net signals __net loops__ A show cntr 1 qrss L line B clear cntr 2 3 in 24 P payload 3 lin 8 U inband up N end tests 4 all 1 D inband down 010 gt 5 2 Since a T1 circuit operates by sending pulses to represent a logical one the indication PULSES means that the T1 CSU portion of this SCC 2020 in the example above does see pulses on both the equipment left side and network right side interfaces Therefore of all the messages which might appear on this menu in upper case characters PULSES is the only message which does not represent an alarm condition Pulses are the logical opposite of a Loss Of Signal LOS condition Figure 5 2 below shows the result of disconnecting the T1 circuit from an SCC 2020 module The word PULSES no longer appears on the right hand side where network status is indicated Instead a number of alarm conditions are reported including ALARM FRAME LOSS CRC ERRORS and SIGNAL LOSS
25. ones and monitors receive data for the same pattern Use of this pattern is suggested whenever Because it produces maximum current levels this test is any T1 circuit is tested especially good at finding some problems like bad repeater cards or resistive punchdown connections All ones is a valid test on all T1 circuits L line Initiates a line Line loopback faces the T1 circuit all data received from the loopback T1 circuit is sent back to the T1 circuit This is the same loopback which occurs when a CSU receives a loop up code from the network P payload Initiates a payload Payload loopback faces the T1 circuit like the line loopback loopback ee sd A payload loopback passes through more of the CSU circuitry while the line loopback occurs closer to the network port U inband up Sends a standard CSU Under normal circumstances sending the line loop up code loop up code toward the far end CSU will cause the far end CSU to enter a line loopback state D inband down Sends a standard CSU loop down code to the far end CSU Under normal circumstances sending the line loop down code will terminate a line loopback state in the far end CSU Verilink SCC 2020 User Manual 5 5 Diagnostics Front Panel LEDs This section describes the function of the SCC 2020 LED indicators EQPT LED 5 6 The EQPT equipment LED is a tri state indicator with six states as follows Table 5 3 Equipment LED States
26. the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecommunications company cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connections of the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas Caution Users should not attempt to make such connections themselves but should contact the appropriate electric inspection authority or electrician as appropriate This equipment is intended to be installed only in a Restricted Access Location that meets the following criteria Access can only be gained by service personnel or users who have been instructed about the reasons for the restrictions applied to the location and about any precautions that must be taken Access can only be gained through the use of a lock and key or other means of security and is controlled by the authority responsible for the location When handling this equipment follow these basic safety precautions to reduce the risk of electric shock and injury Follow all warnings and instructions marked on the product and in
27. the smart jack network termination device may be in a loopback Frame loss in anew installation T1 circuits are often patched out at a carrier s DACS or switch until completely turned up in this case a pattern of unframed all ones AIS is kept on the T1 as a keep alive signal contact the carrier and request that they normal up the circuit the CSU must be optioned for the same type of framing as the T1 carrier is providing framing can not be changed arbitrarily by the user contact the carrier and verify the type of framing used on the T1 CRC errors and BPVs reported on a new installation when a T1 presents symptoms of CRC errors and BPVs with no other alarms it often is traced to problems with wiring inside the customer premise when the smart jack is a considerable distance from the CSU over 50 feet there is the risk that the high level hot signals in the transmit pair will induce echo into the lower level long signals in the receive pair this condition is called crosstalk and is a leading cause of T1 problems as telephone carriers move toward a policy of housing all smart jacks in one location within commercial buildings crosstalk related complaints are becoming more common to prevent crosstalk related issues the transmit pair and the receive pair must be isolated from each other the recommended cable for T1 uses individually shielded twisted pairs each pair has shieldi
28. 0 8F Slip Local IP Address 192 94 46 21 Subnet Mask 255 255 255 0 Ethernet Local IP Address 192 94 45 200 Subnet Mask 255 255 255 0 SITE NAME Tech Pubs SCC 2020 2 NODE ID 851 lt SLOT gt SHELF 1 2 3 4 5 6 7 8 9 10 11 2 13 1 DL C C 2 3 4 KEY C CSU D DIU F DIU DDS R SRD IDCSU T TU A APS B DIU DBU S SMDS L HLM S shelf slot D diagnostics N near element 0 node administration F far element M monitor alarms OFF C configuration A view alarm buffer P performance X log off 1 1 NEAR TAC 2010 gt From this menu you may navigate from card to card or choose various option menus for the current card The Main Menu commands are detailed in the table below Verilink SCC 2020 User Manual 3 3 Configuration Table 3 3 SCC 2020 Main Menu Commands Menu Option Description Instructions S shelf slot Used to navigate from module to module within a node Enter the shelf number and slot number of the desired module use a comma delimiter 1 2 N near element Selects the local node Used to return from a far element session F far element Selects the node at the remote end of the T1 circuit connected to the current module See the section Far End Management below With version 3 02 or higher SCC firmware you can navigate from module to module in the remote node earlier firmware versions only allowed access to the spec
29. 0 8 N N N N Battery nur OK ST ST DTE Intf V 35 V 35 NONE NONE Data buis 22 aa NONE YES YES Tp test and monitor BEC OFF OFF Pp monitor leads and status OFF OFF A Alarm Enable YES 0 0 U 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 NOTE For the remainder of this chapter you will not be instructed to press ENTER each time Generally the ENTER key is used after each command or value entry The CSU command is used to assign the DIU 2130 module to the CSU with which it will be used Since the SCC 2020 contains a TAC 2010 CSU module it will be used for the CSU in this example Type C At the prompt enter shelf gt type 1 at the prompt enter slot gt type 1 again This selects the SCC 2020 in slot one of shelf one as the CSU for this DIU 2130 module The Timing Source defaults to CSU meaning that the DIU 2130 will derive its transmit clock from the source selected in the CSU configuration recovered network clock in this example This is correct for this example In the middle of the display a line across the screen lists all 24 timeslots The DSO timeslot selection prompt appears at the beginning of the next line Dp The lowercase p is a variable instead of typing p a port number 1 or 2 is used For this example timeslots 1 through 12 are to be used on data port number one and timeslots 13 through 24 are to be assigned to data port number two Type
30. 0 firmware revision 1 6 or higher Commands configuration by a remote user through See the section Far End Management below the FDL portion of an ESF T1 A diu bus Selects both the 1 NONE no data bus CSU is in CSU mode Mode in which the CSU will operate 2 A Mux mode using data bus A CSU Mux or Drop amp 3 8 Mux mode using data bus B Insert as well as which midplane data 4 C Mux mode using data bus C bus if any will be f used to exchange 5 B D amp I EQ Drop and Insert mode toward equipment data with any DIU some DSX 1 timeslots routed to LOCAL DIU rarely or never 21xx modules used In Mux mode the 6 A D amp I NET Drop and Insert toward the Net some SCC 2020 EQPT LED network timeslots routed to DSX 1 port some others to one is always green or more DIU modules this is typical Drop And Insert B diu clock Selects the source of 1 THRU The CSU derives transmit clock from the transmit datastream of the DSX 1 equipment automatically selected in CSU mode recommended in Drop amp Insert mode and invalid in Mux mode 2 INT The CSU uses an internal oscillator to generate a 1 544 MHz clock Used only in Mux mode and then only at one end of a T1 on which the carrier uses no DACS 3 EXT 422 The CSU uses a balanced clock signal provided by an external source through the DIN connector on the rear connector module 4 EXT TTL The CSU uses an unbalanced OV to 5V clo
31. 020 Main Menu Y enable loops Determines whether CSU will respond to received standard CSU loop up codes Normally this selection should be enabled In a telephone carrier central office environment this option might be disabled Z reset alarm Clears alarm history for the current 15 minute interval Extinguishes red LED alarm conditions on front panel of the SCC 2020 CSU after installation or after resolving a service problem T test time Sets the length of time tests and loopbacks will be allowed to run FOREVER is suggested by Verilink ENTER INTERVAL DEFAULT x SEC x MIN x HR FOREVER Type FOREVER or type a numeric value followed by SEC for seconds MIN for minutes HR for hours example 45MIN R repeater Establishes a repeater loopback Useful for testing local CSU hardware The CSU loops data it is about to transmit back to the receive circuitry local equipment should see ts own signal This test is functionally equivalent to placing a T1 loopback plug into the network port of the CSU E equip Establishes an equipment loopback The local DSX 1 equipment port is looped back directly to the local equipment useful for verifying cable connections A show cntr Displays test error counter increments for each error detected Used to monitor a test in progress when the CSU transmits a test pattern it expects to receive the same test pattern unaltered either from a l
32. 1 OOOO OO O OO O Oo Oo Oo ooo 14 48 46 65 66 67 68 69 70 11 72 73 74 75 76 11 18 19 80 2 2 O O 0 o Ce Ce 2 2 eo oOo 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 231 OOOO O O O O Oo Oo Oo Oo Oo ooo 0 Verilink SCC 2020 User Manual 4 5 Performance Monitoring 24 Hour Unavailable Seconds After ten Severely Errored Seconds in a row the CSU begins to count Unavailable Seconds As the name suggests the error rate in this condition is considered to be so high that the T1 circuit should be treated as though it were not available Once a CSU begins counting Unavailable Seconds it will continue to do so until ten consecutive seconds pass all of which are error free or have a lower error rate than a Severely Errored Second A typical 24 Hour Unavailable Seconds display is shown below in Figure 4 6 Figure 4 6 24 Hour Unavailable Seconds 24 HOUR UAS PERFORMANCE DATA 4 27 98 15 13 03 Name Tech Pubs SCC 2020 96 0 33 34 35 36 31 38 39 40 41 42 43 44 45 46 47 48 Site Valid Intervals VAS in 24 Hours 1 0 17 0 2 0 18 0 3 0 19 0 4 0 20 0 5 0 21 0 6 0 22 0 7 0 23 0 8 0 24 0 9 0 25 0 10 0 26 0 11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0 32 0 1 1 NEAR TAC 2010 gt 1 1 Seconds in Current Interval 786 UAS in Current Interval 0 0 49 0 6
33. 1 of this procedure The chart in Table 3 8 lists the commands available through the front panel thumbwheels Table 3 8 Thumbwheel Switch Commands Code Applies to Description 01 to 30 Anyof first 30 modules Selects a module in the indicated slot up to slot 30 Thumbwheel switches cannot be used for modules in slots 31 52 31 SCC 2020 Accesses the controller functionality of the SCC 2020 node controller not the T1 CSU portion For an SCC 2020 in slot 1 of shelf 1 use address 01 to set CSU options 32 SCC 2020 Reset modem interface by sending the configured modem initialization string to the DB 9 SLIP port 40 SCC 2020 TAC 2010 Canned configuration 1 EQPT SF AMI NET ESF AMI Verilink SCC 2020 User Manual 3 25 Configuration Code Applies to Description 41 SCC 2020 Canned configuration 2 EQPT ESF AMI NET ESF AMI TAC 2010 42 SCC 2020 Canned configuration 3 EQPT SF AMI NET ESF B8ZS TAC 2010 43 SCC 2020 Canned configuration 4 EQPT SF B8ZS NET ESF B8ZS TAC 2010 44 SCC 2020 Canned configuration 5 EQPT ESF B8ZS NET ESF B8ZS TAC 2010 45 Not applicable The SCC does not support storing and restoring module configurations as the older NCC node controller modules did 46 Not applicable The SCC does not support storing and restoring module configurations as the older NCC node controller modules did 47 SCC 2020 Netwo
34. 2130 92 DIU 2130 Unassign Port 2 timeslot s 99 SCC 2020 Reset SCC password for Craft interface to default condition no password 00 ALL Clear the address command releases currently selected module Use this command if you change your mind after selecting a module in step two or if you select the wrong module accidentally or to practice double clicking 3 28 Verilink SCC 2020 User Manual zu Chapter Performance Menu Performance Menu Display Performance Monitoring Once the SCC 2020 is installed the performance monitoring routines allow you to monitor the performance of the T1 circuit The SCC 2020 maintains a history of the T1 circuit performance for the previous 24 hours and offers the ability to examine various tables Performance statistics may be viewed in a Craft interface session using either a direct connection or Telnet session As described by the various technical publications which define ESF Extended Superframe the SCC 2020 maintains performance records in 15 minute intervals After an SCC 2020 has been operating for 24 hours there will be 96 of these 15 minute intervals stored in the CSU registers Most of the information accessible under the Performance Monitoring Menu is only available with an ESF T1 CRC 6 error checking used to detect errored seconds is only present on an ESF Ta The Performance Monitoring Menu is accessed by typing P while at the SCC 2020 Main Menu The
35. 5 0 81 0 0 50 0 66 0 82 0 0 51 0 67 0 83 0 0 52 0 68 0 84 0 0 53 0 69 0 85 0 0 54 0 70 0 86 0 0 55 0 71 0 87 0 0 56 0 72 0 88 0 0 57 0 73 0 89 0 0 58 0 74 0 90 0 0 59 0 75 0 91 0 0 60 0 76 0 92 0 0 61 0 77 0 93 0 0 62 0 78 0 94 0 0 63 0 79 0 95 0 0 64 0 80 0 96 0 4 6 Verilink SCC 2020 User Manual 24 Hour Loss of Frame Count Performance Monitoring A loss of frame synchronization on a T1 circuit causes a loss of all user data as long as the Out Of Frame OOF condition continues The 24 Hour Loss Of Frame Count indicates how many seconds per fifteen minute interval were during an Out Of Frame condition These are seconds during which you may be certain that no user data passed Since there are 900 seconds in a fifteen minute period the value for any one interval will never exceed 900 A typical 24 Hour LOFC display is shown below in figure Figure 4 7 24 Hour Loss Of Frame Count Seconds in Current Interval LOFC in Current Interval 24 HOUR LOFC PERFORMANCE DATA Site Name Tech Pubs SCC 2020 1 1 Valid Intervals 96 LOFC in 24 Hours 0 1 0 17 0 33 0 49 0 2 0 18 0 34 0 50 0 3 0 19 0 35 0 51 0 4 0 20 0 36 0 52 0 5 0 21 0 37 0 53 0 6 0 22 0 38 0 54 0 1 0 23 0 39 0 55 0 8 0 24 0 40 0 56 0 9 0 25 0 41 0 57 0 10 0 26 0 42 0 58 0 11 0 27 0 43 0 59 0 12 0 28 0 44 0 60 0 13 0 29 0 45 0 61 0 14 0 30 0 46
36. CC code do not havethe needed routines to do this decompression Therefore when upgrading from a version below 1 8x to 1 8x or higher one must first download anew compile of SCC version 1 69C to flashbank A This will enable the decompression of the new code Two procedures are documented below The first is used to get version 1 69C into flashbank A in order to allow subsequent download of compressed code This need be done only if the firmware currently in flashbank A is a release prior to version 1 81 other than 1 69C The second is a general procedure used to download new code to flashbank B Use this procedure only if the firmware currently installed in the SCC 2020 is any revision earlier than 1 81 except 1 69C Thetop line of the SCC 2020 Main Menu indicates which version of firmware is currently running and the second line indicates which flashbank the current firmware was loaded from To determine which version of firmware is in the other flashbank use the boot option on the Node Administration Menu and select that flashbank If the SCC 2020 already has version 1 81 or newer or version 1 69C skip to the section labeled Upgrading Flashbank B e The IP address of the FTP server e The absolute path to the directory containing the Verilink SCC upgrade file FLASH A_U in this case The password if required for accessing the FTP server 1 Using either direct connection to the Craft port or Telnet open a Craft se
37. Community string 64 password The current value for the write community string is right and a string of up to 64 characters can be entered F flash download Used to upgrade SCC firmware See the section Far End Management in this chapter B boot Reboots resets the SCC 2020 Current Bank B flash bank to boot from A or B required when any IP address Ethernet configurations have been changed rebooting does not impact user data R reset com ports Resets the hardware used for Craft port and SLIP port connections No confirmation is required or given the command prompt returns immediately Used if a port seems to be in a locked condition S node controller status Not applicable Produces error message Not Implemented in this release P set privileged Sets password for Current Privileged Password lt gt Change Y N Password on level Privileged users may make configuration changes U set unprivileged Sets password for Current Unprivileged Password lt gt Change Y N wor the unprivil E password unpre egen Unprivileged users have read only access they may not level operator 5 make configuration changes Y element download Used for upgrading See the section Element Download in this chapter modules other than the SCC 2020 X exit menu Exits this menu Returns to SCC 2020 Main Menu Modem Confi
38. Mask 255 255 255 0 et Local IP Address 192 94 45 242 Subnet Mask 255 255 255 0 5 To end your far end session and return to the local SCC use the N command to select the near where you are node NOTE During a far end session most functions under the Node Administration Menu and the Diagnostics Menu are not available This is done to prevent the user from initiating a loopback that would disrupt the far end session Verilink SCC 2020 User Manual 3 17 Configuration Firmware Upgrade Procedures Upgrading SCC Modules To use these procedures you will need To use these Meer you will need to know Before beginning this upgrade Firmware upgrades performed using an SCC 2020 may be divided into two categories upgrades of the SCC module s own firmware and upgrades in which the SCC broadcasts new firmware to other module s in the node The two procedures below are used to upgrade the firmware of an SCC 2020 In each case you must be running from the opposite flashbank To upgrade flashbank A you must be running from flashbank B To upgrade flashbank B you must be running from flashbank A A file containing a new revision of SCC firmware An Ethernet or SLIP connection to the SCC 2020 for performing FTP file transfers a Telnet application or a direct terminal connection to the SCC Craft interface An FTP server application NOTE Most common FTP programs are CLIENTS not SERVERS Be
39. Performance Monitoring Menu offers six options to display information and a Reset Registers command to clear all stored information Figure 4 1 Performance Monitoring Menu PERFORMANCE MONITORING N 1 hour network E 24 hour es B 24 hour bes S 24 hour ses U 24 hour uas L 24 hour lofc R reset registers X exit menu 1 1 NEAR TAC 2010 gt Verilink SCC 2020 User Manual 4 1 Performance Monitoring One Hour Network Definitions The acronyms shown on the Performance Monitoring Menu are described in Table 4 1 below Table 4 1 Performance Monitoring Menu Acronyms Acronym Meaning ES Errored Second any second during which one or more bit errors have been detected BES Bursty Errored Seconds a second having between 2 and 319 CRC 6 error events Bursty errored seconds are not counted when an SES or UAS is counted SES Severely Errored Second a second with 320 or more CRC 6 error events or one or more OOF Out Of Frame events UAS Unavailable Second any second during which an Unavailable Signal State occurs An Unavailable Signal State condition is declared after ten consecutive SES and clears only after ten consecutive seconds which are not Severely Errored Seconds LOFC Loss Of Frame Count an accumulated value equal to the number of times that a Loss Of Frame has been declared Loss of frame is declared when either LOS Loss Of Sign
40. SCC 2020 are shown The unit is in CSU mode DIU bus NONE and the network interface shown on the right at the top is set for ESF framing and AMI line code The DSX 1 Equipment interface shown at top left is set for SF D4 framing and AMI line code For this quick set up the Equipment interface is not being used as it would bein CSU mode or Drop and Insert mode Because this example will use all 24 timeslots for data purposes on a DIU 2130 module Mux mode is required 1 Type A and press ENTER the prompt for bus selection appears DSU Bus 1 NONE 2 A 3 B 4 C 5 B D8l EQ 6 A D amp l NET gt select 2 to use Data Bus A This means that the CSU and the DIU 2130 will use Data Bus A in the shelf to pass data back and forth The CSU is now in Mux mode The EQPT LED changes from red to green Type F and press ENTER the prompt for line format appears Line Format eq net 1 AMI AMI 2 AMI B8ZS 3 B8ZS AMI 4 B8ZS B8ZS gt select 4 for B8ZS since the Equipment side interface is not used selection 2 would also work The default value for the density enforcement selection is not correct for a B8ZS T1 Use the Z command and select 1 to change it to NONE B8ZS was developed to eliminate the need for density enforcement For this example a Network Service Provider the phone company is providing a timing signal with a Digital Access and Cross connect System DACS This is usually the case where
41. Set the thumbwheel to the number 01 through 30 equal to the slot number of the module to be optioned If a node consists of Multi line shelves the first slot in shelf two would be numbered as 14 and the last slot 26 In a node consisting of all Dual line shelves the first left hand slot of a second shelf is number 03 Rapidly press the EXE pushbutton twice as if double clicking a mouse If the SCC 2020 accepts your double click the STAT LED on the selected module will begin to blink green to off If the STAT LED does not begin to blink try double clicking again at a slightly faster or slower rate Do not proceed to step 3 until the STAT LED on the desired module begins to blink Once the STAT LED does begin to blink steps 3 and 4 must be completed within 60 seconds or the thumbwheel command procedure will time out Set the thumbwheel switches to the command value which is to be used per Table 3 8 below Double click the EXE pushbutton again If the SCC 2020 module accepts your double click the STAT LED on the selected module will stop blinking green to off and return to some other state If the STAT LED on the module continues to blink green to off the SCC 2020 did not accept your double click Try double clicking again at a faster or slower rate If you are not successful within 60 seconds of the time you selected the module in step 2 the module will timeout and return to its normal state If this happens start over with step
42. Verilink SCC 2020 User Manual October 1999 P N 880 503268 001 B1 E it nn INN sp ME cnn f FUNCTIO IN OUT VERILINK Copyright Notice Trademarks FCC Requirements Copyright O 1999 Verilink Corporation All rights reserved This document does not create any express or implied warranty about Verilink or about its products or services Verilink s sole warranty is contained in its product warranty The end user documentation is shipped with Verilink s products and constitutes the sole specifications referred to in the product warranty Verilink has made reasonable efforts to verify that the information contained herein is accurate but Verilink assumes no responsibility for its use or for any infringement of patents or other rights of third parties that may result The customer is solely responsible for verifying the suitability of Verilink s products for its use Specifications are subject to change without notice Verilink is a registered trademark of Verilink Corporation Access System 2000 WANscope VeriStats and FrameStart are trademarks of Verilink Corporation Any named products herein are trademarks of their respective companies This equipment has been tested and found to comply within the limits for a Class A digital device pursuant to Part 15 of the Federal Communications Commission FCC rules These limits are designed to provide protection against harmful interference in a commerc
43. X CIRCLE MADISON ALABAMA 35758 TEL 800 837 4546
44. a 3 17 Firmware Upgrade Procedures su 3 18 Upgrading SCC Modules sisi nenn 3 18 Downloading Version 1 69C to Flashbank A nn 3 19 Upgrading Flashbank B Vs 3 21 Element Download ee ehe nn 3 22 1 humbwheel Sswitches as seem iaa 3 24 Thumbwheel Procedure iii 3 25 Thumbwheel Commands issues 3 25 Performance Monitoring iii 4 1 Performance Menu nat ad eee 4 1 Performance Menu Display ccoooccccnoccccnnccccnnnnncnnnnnconnnnncnnannconnnanonnnnccnnaninns 4 1 One Hour NetWork siii ae datada 4 2 Verilink SCC 2020 User Manual vii viii 24 hour Errored S conds 2 a tds 4 3 24 Hour Bursty Errored Seconds rara 4 4 24 Hour Severely Errored Seconds rrenan 4 5 24 Hour Unavailable Seconds coooccccncccnnnnccnnnnncnnnnnccnnnnncnnnnncnnnnnrnnnnnncnnnnn 4 6 24 Hour Loss of Frame Count us 4 7 Reset RegiSters u EIER 4 7 Diagnostics cui cis 5 1 USING DIAGNOSES miii da 5 1 Al arm Status 2 2 2 ii Bern 5 1 Diagnostics MENU 1 2 2 er ug draga 5 2 Status Messages nn ia gi rege 5 3 Diagnostic Commands ris mann nnnnnnnnnnnnnnnnnnnn nenn 5 4 Front Panel LEDS ibi 5 6 EQPTUEED ti a 5 6 STAT LED A cda 5 7 NET LEDS it s 5 7 Test Procedures susi aii ca 5 8 Verifying ATI ur nee linea 5 8 Troubleshooting alicia ee 5 10 ET or ER ess et ts antenne nn Mr nn mn lun dent 5 10 Verilink SCC 2020 User Manual zu Chapter Scope Installation Information Related Verilink
45. al or OOF Out Of Frame is true for two to three seconds LOF is cleared only after 10 seconds with LOS and OOF clear The One Hour Network function produces screen output which lists a 24 hour summary for each of the parameters described in Table 4 1 above Also shown are counts for each of the same alarm conditions for the preceeding hour in four 15 minute intervals The One Hour Network display looks like Figure 4 2 One Hour Network Report 4 2 ONE HOUR PERFORMANCE DATA 4 27 98 14 10 44 Site Name Tech Pubs SCC 2020 ELEMENT ID 1 1 Valid Intervals 96 Seconds in Current Interval 464 ES UAS BES SES LOFC 0 0 0 0 0 24 Hour Total 0 0 0 0 0 Current Interval 0 0 0 0 0 Interval 1 0 0 0 0 0 Interval 2 0 0 0 0 0 Interval 3 0 0 0 0 0 Interval 4 1 1 NEAR TAC 2010 gt Verilink SCC 2020 User Manual 24 hour Errored Seconds Performance Monitoring The 24 hour Errored Seconds selection on the Performance Monitoring Menu produces a screen showing the errored second counts for each of the last 96 fifteen minute intervals Errored seconds are the least serious of the error conditions tracked by the CSU A typical errored seconds display is shown below in Figure 4 3 Figure 4 3 24 Hour Errored Seconds ES o hi Un BB QU ON a wo 10 11 12 13 14 15 16 Site Name 2 2 2 2 2 OOOO O OO Oo ooo 1 1 17 18 19 20 21 22 23 24 25 26 21 28 29 30
46. am Stromanschluss permanent geerdet sein VORSICHT Schaltungen die in den Ger ten zusammengeschaltet sind m ssen weiterhin den Vorschriften EN60950 1992 A4 1997 Absatz 6 2 f r Telecommunications Netz Spannung TNV Schaltkreize entsprechen This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la class A prescrites dans le R glement sur le brouillage radio lectrique dict par le minist re des Communications du Canada The Industry Canada label indentifies CS 03 certified equipment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements Industry Canada does not guarantee the equipment will operate to the user s satisfaction Before installing this equipment users should ensure that it is permissible to be connected to the facilities of the local telecommunications company The equipment must also be installed using an acceptable method of connection In some cases the company s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly telephone extension cord The customer should be aware that compliance with
47. and the transmit data provided by the DTE if errors of this type are reported try changing the ST vs INV ST selection for DSU clocking in the DSU at the opposite end of the circuit for more information on DTE clocking issues see the DIU 2130 User Manual Loopback Plug For a completely reliable test of a CSU make a T1 loopback plug and plug it in to the network port The CSU will now receive the signals it is sending If the CSU is sending a defective signal it will receive a defective signal and declare an alarm If the receive circuitry is defective such that it cannot decode a good signal it will be unableto decode the signal it is transmitting and will declare an alarm Thus if a T1 CSU does not declare any alarms with a loopback plug in lieu of the T1 circuit the CSU is not defective This does not rely on any tests built in to the product thereby producing a higher confidence level in the results of the test Verilink SCC 2020 User Manual Diagnostics With a loopback plug in the network port any customer equipment connected to the SCC 2020 or a data port of any DIU module assigned to the CSU should see a loopback condition If the customer equipment is capable of reporting errors it should indicate that no errors are being received A T1 loopback plug can be made by taking a male RJ 45 connector and placing two short jumper wires where a cable would normall y go One jumper is placed from pin one t
48. are appropriate Mode is used to determine the data rate of each of the timeslots assigned to the port Inthe case of an AMI T1 circuit the mode must be 56K For the B8ZS T1 used in this example 64K gives the user greater throughput Use the M1 and M2 commands to set both data ports to 64K per DSO The remaining options are correct for this example The T1 circuit and DTE should now be connected Once the CSU has been connected to the T1 circuit for at least fifteen minutes meaningful performance statistics will be available under the Performance Menu see Chapter 4 for more details Within 15 seconds of connecting the T1 circuit the NET LED on the front of the SCC 2020 should change from red to green If it does not the Diagnostics Menu may be used for troubleshooting see Chapter 5 for more information on diagnostics Verilink SCC 2020 User Manual Quick Set Up For more information on DIU 2130 modules see the DIU 2130 User Manual The configuration of the SCC 2020 is covered in detail in Table 3 4 located in Chapter 3 of this manual Verilink SCC 2020 User Manual 2 7 Quick Set Up 2 8 Verilink SCC 2020 User Manual zu Chapter Preliminaries Configuration This chapter covers configuring the CSU portion of the SCC 2020 Node Controller setting up the SNMP controller functions through the Craft terminal interface and use of the front panel thumbwheel switches You can connect to the Verilink Craft interface di
49. bstituting the filename FLASH A for FLASH A_U The SCC 2020 module can be used to broadcast new versions of firmware to other modules in the node In some cases it can be used to upgrade remote modules through a T1 circuit The procedure for element downloads is as follows Verilink SCC 2020 User Manual 9 10 Configuration Place the download file received from Verilink in a known path on an FTP server Connect to the SCC 2020 directly or using Telnet At the pSH gt prompt issue the command to connect to the FTP server FTP 192 94 45 229 use the IP address of your FTP server Navigate to the directory where the Verilink upgrade file is located by using the cd command Set the transfer type to binary by typing binary Transfer the file to the SCC 2020 by typing get myfile ext use the actual name of the file received from Verilink Now end the FTP session by typing quit At the pSH gt prompt type craft to enter the Craft interface Type O for the Node Administration Menu Type Y for the Element Download Menu The Element Download Menu is shown in Figure 3 7 The commands presented are documented in Table 3 7 Figure 3 7 Element Download Menu T F 5 L D X element download el ement file shel f 0 0 slot 0 0 dwnload exit menu 1 1 NEAR TAC 2010 gt The commands used on the Element Download Menu will vary ac
50. cation Signal AIS received all ones keep alive to resolve a problem with received yellow alarms find the trouble in the transmit path of the CSU which is receiving the yellow alarm BPV abipolar violation is a sequence of two or more consecutive pulses of the same polarity if a T1 is designed to support B8ZS but some portion of the facility is configured for AMI in error the AMI portion of the T1 may attempt to fix the intentional bipolar violations used to represent 8 or more zeroes on a B8ZS T1 this may manifest as BPVs or BPVs with CRC 6 errors to verify that a T1 which is intended to be B8ZS is actually configured properly test the facility with a pattern of all zeroes CSU reports no errors but DTE reports errors in some data applications using DSU functions a condition is reported in which the CSU does not report errors but the customer Data Terminal Equipment DTE does report errors this usually results from transmit data sampling errors at a DSU interface at the opposite end of the circuit from the DTE reporting the errors if a CSU DSU samples a zero when the DTE actually presented a one the transmitting CSU creates CRC checksum data based on the improperly sampled bit s the data does not change on the T1 facility and the receiving CSU detects no error these types of errors are caused by a broken phase relationship between the transmit clock provided by the DSU
51. ceived pattern matches the transmitted pattern Solid Red Some alarm condition has occurred within the last fifteen minutes on either the Network or Equipment interface Flashing Power up self test has failed verify that the rear CIM module is Red to Off of a correct type CIM 2022 or CIM 2052 Flashing Errors have been received during a test a test signal is being Red to transmitted and the pattern received does not match the pattern Yellow which was sent Not Lit No alarms have occurred within the last fifteen minutes this is the normal state for the Stat LED The NET network LED is a tri color indicator with six states as follows Table 5 5 Net LED States State Meaning Solid Green A normal signal is being received from the network all OK Solid The SCC is looped toward the network via a line loopback LLB Yellow or payload loopback PLB and no errors are being received from the network Solid Red Continuous errors are being received on the network interface e g LOS LOF RAI AIS Flashing Bipolar violations or CRC 6 errors are being received on the Red to network interface Green Flashing The CSU is looped toward the network and errors are being Red to received BPV or CRC 6 Yellow Not Lit The SCC has no power or if other LEDS are lit the SCC is defective Verilink SCC 2020 User Manual 5 7 Diagnostics Test Procedures Verifying A T1 Far End Loop
52. ck 1 544 Mbit s SF B8ZS 04DU9 DN 1 544 Mbit s ANSI ESF 04DU9 1KN 1 544 Mbit s ANSI ESF B8ZS 04DU9 1SN For DDS interfaces Port ID REN SOC FIC USOC 56 kbit s 6 0N 04DU5 56 RJ 485 jack 64 kbit s 04DU5 64 If the unit appears to be malfunctioning inform the telco and disconnect it from the network lines until the source of trouble is determined to be your equipment or the telephone line If your equipment needs repair it should not be reconnected until it is repaired The unit has been designed to prevent harm to the network If the telephone company finds that the equipment is exceeding tolerable parameters it can temporarily disconnect service In this case the telephone company will provide you advance notice if possible Verilink SCC 2020 User Manual Lithium Battery English Francais Espa ole If the telephone company alters its equipment in a manner that can affect the use of this device it must give you warning so that you have the opportunity to maintain uninterrupted service You will be advised of your right to file a complaint with the FCC No customer is authorized to repair this equipment regardless of warranty status All repairs must be performed by Verilink or an authorized agent It is the responsibility of users requiring service to report the need for service to Verilink or to one of our authorized agents The lithium battery referred to in the following notices is contained inside the
53. ck signal provided by an external clock source through the DIN connector on the rear connector module 5 NET The CSU uses the clock recovered from receive data on the T1 network port for the transmit clock this is most often the desired option in Mux mode and is required if the network provides a clock uses a DACS 6 EQ The CSU recovers the DSX 1 T1 transmit clock to time the network transmit 7 TIU The CSU uses a clock on data bus C produced by an optional TIU 2850 module installed in the same shelf 8 DIU The CSU uses a clock provided by DTE connected to a data port on a DIU213x module tail circuit timing requires this option 3 8 Verilink SCC 2020 User Manual Configuration Menu Option Description Instructions P prm Performance Response Messages may optionally be sent in the 4K FDL portion of an ESF framed T1 1 NO Performance response messages received from the network are ignored no messages are sent 2 USER Performance response messages are allowed responses and information stored in the user ESF registers is made available Used by pro active carriers O poll far end If enabled on a point to point ESF T1 far end polling can monitor alarms at a remote CSU 1 yes far end polling is used requires FDL continuity from end to end a DACS in the T1 usually terminates the FDL making this unusable note that ESF is required to use this option
54. clock chip DANGER The battery can explode if incorrectly replaced Replace only with the same or equiv alent type recommended by the manufacturer Dispose of used batteries according to the manufacturer s instructions DANGER To avoid electrical shock in case of failure the power supply must be installed by a professional installer The terminal labeled with the ground symbol on the power supply must be connected to a permanent earth ground CAUTION Interconnecting circuits must comply with the requirements of EN60950 1992 A4 1997 Section 6 2 for telecommunications network voltages TNV circuits ATTENTION Une explosion peut se produire si la batterie est remplac e d une facon incorrecte Remplacez la seulement avec le m me mod le de batterie ou un mod le quivalent selon les recommendations de manufacture Disposez de les batteries us es selon les instructions de manufacture ATTENTION Pour viter choc lectrique en cas de insucc s la provision de pouvoir doit tr install par un installeur professionnel Le terminal de la provision de pouvoir mar qu du symbol de terre doit connect un circuit de terre permanent PRUDENT Les circuits doivent tr interconnect s de mani re ce que l quipement continue a tr en agr ment avec EN60950 1992 A4 1997 Section 6 2 pour les circuits de voltage de liaisons d changes r seau par les t l communications TNV
55. cording to The type of application module s you are upgrading The name of the file provided for the upgrade The shelf and slot location of the module s Whether the module to be upgraded resides in the local node or a remote location NOTE For remote upgrade to work the locations must be connected with a T1 which has ESF framing and an uninterrupted Facilities Data Link FDL In very many cases the T1 will be Verilink SCC 2020 User Manual 3 23 Configuration routed through a Digital Access and Crossconnect System DACS and the FDL will be terminated at the DACS in these cases remote upgrade will not function The commands are used as follows Table 3 7 Element Download Commands Menu Option Description Instructions T element Selects type of module to be 1 TAC 2010 a TAC 2010 CSU or an SCC 2020 upgraded a list is presented 2 TAC 2130 An IDCSU Integrated DSU CSU To upgrade the CSU portion 3 TAC 2110 an Automatic Protection Switch APS of an SCC 2020 select TAC CSU 2010 4 DIU 2130 A two port DSU module nn 5 DIU NMS A modified DIU 2130 which supports connected with an ESF T1 mapping done by the carrier to DDS remote circuits which has a continuous 6 DIU DBU Modified DIU 2130 which supports Facilities Data Link FDL external dial backup function link between them 7 DDS 2140 a DIU 2140 subrate data multiplexer 5 To test for a continuous po
56. e Ethernet connectivity described below If SLIP will not be used leave the SLIP Local IP address set to 0 0 0 0 host configuration for slip L Slip Local ip address 192 94 46 222 P Slip Peer ip address 192 94 46 101 S Slip Subnet Mask 255 255 255 0 X exit the SLIP Local IP address is for this SCC 2020 the SLIP Peer address must be set for the trap host IP address in current SCC firmware the SLIP Subnet mask shown is for a TCP IP class C address use the normal subnet mask conventions E Ethernet Configuration Calls a short submenu which is used to configure the AAUI 14 Ethernet connector on the rear connector module An Ethernet transceiver which supports both 10BaseT and 10Base2 is provided with each SCC 2020 host configuration for Ethernet L Ethernet Local ip address 192 94 45 242 S Ethernet Subnet Mask 255 255 255 0 T Ethernet Type Ethernet DIX X exit the Ethernet local IP address is for this SCC 2020 the Ethernet subnet mask shown is for a TCP IP class C address use normal subnet mask conventions the Ethernet type must be set to Ethernet DIX M Modem Configuration Calls the Modem Configuration Menu Required only if SLIP will be used over a dial up modem connection see the table below G IPover Tl Configuration Not applicable IP over T1 is not supported in the SCC 2020 O IP Gateway Set
57. e data from and present transmit data to the CSU The CSU multiplexes data from x ports on x DIU modules into the T1 transmit datastream A TAC 2010 or SCC 2020 module is in Mux mode when the DIU bus option is set to A Bor C A typical use of Mux mode would be for data only applications Verilink SCC 2020 User Manual 3 9 Configuration Drop And Insert Mode Drop and Insert mode combines the features of CSU mode and Mux mode The DSX 1 equipment port is used for some of the T1 timeslots and data bus A is used to pass other timeslots to some DIU 21xx module s Since the CSU can not control the transmit data rate of the DSX 1 equipment the CSU is usually configured to recover transmit clock from the DSX 1 datastream THRU timing Drop and Insert mode is established by selecting A D amp I NET for the DIU bus option When this is done a new option field appears in the Configuration Menu beneath the PRM field as shown below Figure 3 3 Select D amp I DSOs Field A diu bus A D amp l NET P prm OFF D select DEl DSOs 1 24 G Alarm ENABLE This field is used to select the timeslots for data use Any timeslots shown in this field will be placed on data bus A for use by a DIU21xx module The DSX 1 equipment will receive a framed all ones signal in those timeslots making them appear busy to a PBX Timeslots not listed in this field are allowed to pass unmodified to the DSX 1 equipment Node Administration N
58. e found in Chapter 3 Using the Craft cable supplied with the SCC 2020 connect the modular RJ 11 end to the port labeled Craft on the front panel of the SCC 2020 Connect the other end of the Craft cable to your PC or terminal Set your terminal or terminal program to 19 2 kbit s 8 data bits no parity one stop bit and no flow control Press ENTER The prompt pSH gt is displayed Type craft use lowercase The prompt YOUR PASSWORD is displayed Initially there is no password press ENTER The SCC 2020 Main Menu is displayed NOTE The prompt line and menu names will refer to the SCC 2020 asa TAC 2010 This is because an SCC 2020 isa TAC 2010 T1 CSU to which the SNMP Craft interface and node controller functions have been added Verilink SCC 2020 User Manual 2 1 Quick Set Up Figure 2 1 SCC 2020 Main Menu VERILINK SCC NODE CONTROLLER at 1 1 FW Rev 3 02 Jan 14 1999 FLASH BANK B Serial Number 00655503 Ethernet Address A0 64 00 04 00 8F Slip Local IP Address 192 94 46 37 Subnet Mask 255 255 255 0 Ethernet Local IP Address 192 94 45 242 Subnet Mask 255 255 255 0 SITE NAME Tech Pubs SCC 2020 NODE ID 851 lt SLOT gt SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13 1 DL C D 2 3 4 KEY C CSU D DIU F DIU DDS R SRD IDCSU T TU A APS B DIU DBU S SMDS L HLM S shelf slot D diagnostics N near element 0 node administration F far element M moni
59. ed flashbank For more information on downloadable firmware upgrades see Far End Management in Chapter 3 of this manual Verilink s SCC family of Node Controllers includes the following modules e The SCC 2020 is a TAC 2010 T1 CSU with the addition of an SNMP capable node controller function documented in this manual The SCC 2130 is a TAC 2130 IDCSU Integrated T1 CSU DSU with the addition of an SNMP capable node controller function See the SCC 2130 User Manual for full details The SCC 2120 is a TAC 2110 Automatic Protection Switch CSU with the added functions of an SNMP node controller and a master controller for automatic switch protection of T1 circuits The SCC 2120 is the node controller specifically designed for the Automatic Protection Switch APS 2000 system For more information on the APS 2000 see the APS 2000 T1 Line Protection System User Manual Verilink SCC 2020 User Manual Overview Compatible Types of application modules which may be managed by the SCC Modules 2020 are illustrated below Table 1 1 SCC Compatible Modules Module Type Usage TAC 2010 CSU T1 CSU which may be used as a CSU only CSU mode part of a CSU DSU Mux mode or in a combination of both Drop amp Insert Mode May be used with up to 24 DIU 21xx DSU modules to make a data channel bank DIU 2130 DSU DSU with two synchronous serial interface ports for connection of Data Terminal Equipm
60. ed by the value for the network side For example if connecting a D4 SF channel bank to an ESF T1 circuit the SF ESF framing selection would be used Table 3 4 below describes all of the SCC 2020 CSU Configuration Menu options Verilink SCC 2020 User Manual 3 5 Configuration Table 3 4 CSU Configuration Options Menu Option Description Instructions W framing Selects T1 framing First value DSX 1 equipment second value T1 circuit mode for both DSX 1 equipment port and 1 SF SF D4 equipment and a D4 T1 T1 network port 2 ESF SF ESF equipment and a D4 T1 Selection for the Equipment side must 3 SF ESF D4 equipment and an ESF T1 match the optioning 4 ESF ESF ESF equipment and an ESF T1 of the equipment f y 5 UF UF unframed equipment on an unframed T1 never Selection for the T1 use this option on a T1 circuit provided by a telephone network side must company match the type of T1 LE installed by the 6 SF ZBT D4 equipment on a Zero Bit Time Slot Insertion network service T1 there are no ZBTSI T1 circuits do not use this option provider 7 ESF ZBT ESF equipment on a ZBTSI T1 there are no ZBTSI T1 circuits do not use this option F format Selects AMI or BBZS First value DSX 1 equipment second value T1 circuit for the DSX 1 equipment and T1 1 AMI AMI AMI coded DSX 1 equipment on an AMI T1 network line codes 2 must match Tikand
61. ent DTE May be used with TAC 2010 including the TAC 2010 portion of an NCC 2020 Uses a shelf midplane to receive transmit data to a CSU module DIU 2130 DBU DSU DSU with a single synchronous serial interface port and modified firmware which uses the second port to switch the DTE data from port 1 to an external Dial Back Up device which must be configured to dial on DTR Uses a shelf midplane to receive transmit data to a CSU module DIU 2130 DSU DSU with two synchronous serial interface ports and support for routing 56K NMS of individual timeslots in the telco cloud to remote sites with 56K DDS circuits Uses a shelf midplane to receive transmit data to a CSU module DIU 2140 Sub Rate DSU with five RS 232 interface ports each individually selectable for sync Data or async data which are multiplexed into a single timeslot DSO of the Multiplexer associated T1 CSU Uses a shelf midplane to receive transmit data to a 5 port DSU CSU module TAC 2130 Integrated Standalone for data purposes DSU CSU supports a single synchronous DSU CSU serial interface only Does not and will not use any midplane bus to transfer data to any other module Components The complete SCC 2020 assembly consists of a front panel module and a rear panel connector interface module together occupying a single shelf slot position accessible from the front and back of the AS 2000 rack or shelf The CIM is installed from the rear of the shelf into the backp
62. f these alternatives e Use a loopback closer to the local CSU The telephone carrier may be able to put up loopbacks at various locations along the path of the T1 circuit Start far away and work your way back to the local CSU e If it appears that the local CSU is defective try using a Repeater loopback Send a test pattern while the local CSU is in Repeater loopback the test pattern never leaves the CSU because it is receiving what it is sending If this test passes the CSU is probably OK e If a problem is identified but not resolved by this procedure go on to the next section Troubleshooting Verilink SCC 2020 User Manual 5 9 Diagnostics Troubleshooting Repeater Loopback Tips 5 10 When it is known that a problem exists in a T1 network application a different approach is suggested In the verification procedure above the initial test passed data through the entire T1 circuit including both local and far end CSUs This was done because of the expectation that no trouble would be found With trouble known to exist begin by establishing what is good Start with a repeater loopback test in the local CSU The repeater loopback test takes the transmit data just as it is about to leave the network port of the CSU and feeds it directly into the receive circuitry of the CSU If the CSU is transmitting bad data it will now receive bad data and the problem will be located the CSU If the CSU is transmitting good data bu
63. g the FTP server NOTE If you received the Verilink SCC files in a PKZIPped format first extract them using PKUNZIP Two files may be found FLASH A and FLASH B For this procedure only FLASH B is required 1 Using either direct connection to the Craft port or Telnet open a Craft session to the SCC card to be upgraded 2 Usethe O command to select the Node Administration Menu 3 Type B to reboot NOTE The boot command reboots only the SNMP and Craft interface functions of the SCC 2020 any user data passing through the CSU portion of the SCC 2020 will not be affected 4 Select flashbank A 5 When the pSH gt prompt returns type FTP lt P address of FTP server gt 6 Login to the FTP server using the method required by your FTP server program 7 Usethe CD command to change to the directory where you previously placed the file FLASH B 8 Use DIR or Is 1 as appropriate to produce a long display of the files in this directory Verilink SCC 2020 User Manual 3 21 Configuration Element Download 3 22 9 Record the file size of the FLASH B file 10 Issue the command binary NOTE If you fail to issue the command binary the file will be corrupted when it is transferred 11 Issue the command get flash b flash hex The file is now transferred from the FTP server to a RAM disk in the SCC card If you are using Ethernet this proce
64. guration When M is selected on the SCC 2020 Node Administration Menu the Modem Configuration Menu appears Verilink SCC 2020 User Manual Configuration Figure 3 5 Modem Configuration Menu Modem Status Modem Configuration NOT CONNECTED D Answer DISABLED C Answer Command AT amp C1 amp D2 amp 00 S0 1 T Answer Inactive Timeout 0 seconds B Dial Out DI SABLED U Dial Out Command AT amp C1 amp D2 amp K3 amp Q0 X4 S0 0 DT N Dial Out Number R Dial Out connect retries 0 K Dial Out connect timeout 60 seconds I Dial Out Inactive timeout O seconds S Dial Out W Set default commands A Answer H Hangup X exit 1 1 NEAR TAC 2010 gt Modem The Modem Configuration Menu is used to support an optional Configuration dial up modem which may be connected to the port labelled Options Management Port In on the rear connector module This port supports the Serial Line Interface Protocol a subset of TCP IP designed to support Internet protocols across a low speed RS 232 Wide Area Network connection The Modem Status field on the Modem Configuration Menu reflects the status of the Data Carrier Detect lead DCD on the Management Port In If SLIP is used it may be used with or without a modem To use SLIP without amodem be certain that the Answer and Dial Out fields are set to DISABLED The options on the Modem Configuration Menu are documented in Table 3 6 below 3 14 Verilink SCC 2020 User Manual Tab
65. ial environment This equip ment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the user manual can cause harmful interference to radio communications There is no guarantee that interference will not occur in a particular installation If this equipment causes harmful interference to radio or television reception which can be determined by turning the equipment off and on try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This equipment complies with Part 68 of the FCC Rules On the rear side or bottom of the unit is a label that contains the FCC registration number and other information If requested provide this information to the telephone company All direct connections to the network lines must be made using standard plugs and jacks compliant with Part 68 The following tables list the applicable registration jack universal order codes USOCs facility interface codes FICs and service order codes SOCs These are required to order service from the telco For T1 interfaces Port ID REN SOC FIC USOC 1 544 Mbit s SF 6 0N 04DU9 BN RJ 48C ja
66. ific remote CSU module C configuration Selects the Configuration Menu See Figure 3 2 and Table 3 4 below P performance Selects the Performance Menu See Chapter 4 of this manual D diagnostics Selects the Diagnostics Menu See Chapter 5 of this manual O node administration Selects the Node Administration Menu See Figure 3 4 and Table 3 5 below M monitor alarms OFF Toggles on off the monitor alarms function If monitor alarms is ON alarm messages are displayed on the Craft interface as they occur No alarm messages are displayed if monitor alarms is OFF A view alarm buffer Displays alarm buffer A history of recent alarms is displayed X log off Exits the Main Menu Returns to pSH gt prompt the TCP IP shell The Configuration Menu 3 4 In the Main Menu shown in Figure 3 1 the element C is selected The letter C is defined in the Key as a CSU In the case of a card in slot 1 of shelf 1 this would be the SCC 2020 card The SCC 2020 contains two completely separate functions an SNMP network controller and a T1 CSU The T1 CSU portion of an SCC 2020 is a TAC 2010 card Once an SCC 2020 is installed in a node additional T1 CSU requirements can be met by adding TAC 2010 modules Each node group of shelves connected together must have only one node controller card This card should be located in slot 1 of shelf 1 If additi
67. ion must be 3 x or newer at both ends A limited distribution release of version 2 06 will also work The TAC firmware in the SCC 2020 controlling the node must be version 1 6 or newer TAC firmware revision is indicated in the CSU configuration menu The user must login to the Craft interface locally or via Telnet using the special password 800far The CSU module SCC 2020 or TAC 2010 only with the T1 connecting remote sites must have TAC firmware 1 6 or newer The T1 circuit connecting the sites must use ESF framing The ESF framing on the T1 circuit must be continuous from end to end NOTE Many T1 circuits especially those handled by a long distance carrier pass through a Digital Access and Cross connect System DACS For far end management to work on a T1 passing through a DACS the DACS must map the Facilities Data Link FDL portion of the ESF framing through to each end This option is usually not set by default in the DACS Ask your carrier if the T1 has FDL continuity Exceptions Far end management will not work if any of the following are true The T1 circuit uses D4 framing The T1 circuit passes through a DACS which does not convey ESF framing from end to end because FDL pass through is not on This condition is most often true for T1s which pass through a DACS e The user fails to login using the special password 800far e TheT1 circuit connecting the two sites is terminated at either
68. lane The SCC 2020 front module is installed from the front The CIM s always installed first and removed last The SCC front module is installed last and removed first it is equipped with ejector handles The SCC module front panel provides indicator LEDs and management ports It also provides a Craft interface port and signal access jacks NOTE The bantam type signal access jacks provide access to internal signals within the module If the SCC 2020 is being used with any type of DIU DSU module the signals on the bantam jacks will NOT reflect line signals and this jack field should not be used Verilink SCC 2020 User Manual 1 3 Overview Front and Back Modules SCC Front Panel Figure 1 1 This section describes the SCC 2020 front module and the rear connector interface modules that can be used with it Figure 1 1 illustrates the front panel view of the module SCC Node Controller Front Panel RJ 11 Modular jack Equipment for direct Craft Thumbwheel switches and Status and interface command execution push Network LEDs connection Signal access jacks bantam button SCC EQPT N 2020 The SCC front panel provides thumbwheel switches LED indicators and management and monitor ports It is equipped with dual ejector levers to facilitate installation and removal of the module HER Ele SAS EB Go Go Go w IN OUT IN FUNCTION CRAFT
69. le 3 6 Modem Configuration Commands Configuration Menu Option Description Instructions D Answer Toggles answer mode on off Select ENABLE to support answering incoming calls Select DISABLE to inhibit answering calls C Answer Command Command string to be sent to modem to setup auto answer mode The default auto answer string is shown in Figure 3 5 use this string or modify it per the requirements of your modem T Answer Inactive Timeout Length of time an incoming call is allowed to be idle before the modem is disconnected Enter a value in seconds for idle time before disconnect range 1 to 255 if this value is reached the DTR lead is toggled low to disconnect the modem modem should be set for amp D2 disconnect on DTR low B Dial Out Toggles on off dialing a Select ENABLE to support dialing out to a trap host stored number to report when alarm conditions occur or clear or DISABLE if the alarms to a trap host SCC 2020 is never to dial out to a trap host U Dial Out Command sent to modem The default dial out string is shown in Figure 3 5 use Command to initiate a call this string or modify it per the requirements of your modem and phone line N Dial Out Number Phone number to call Enter a phone number if using dial out R Dial Out connect retries Number of times to retry dialing out to trap host Enter a number in the range of 1 255 or ze
70. ng around it the cable therefore has two shields inside it one for each pair if shielded twisted pair cable is not available try to route the transmit pair and the receive pair in different cables as they traverse the building if the transmit and receive pairs must be routed through a multi pair cable such as the 25 pair or 50 pair cables found in large office buildings select pairs which are not near each other in the cable many smart jacks offer an option regeneration this causes the smart jack to increase the amplitude of the signal received from the network before handing it off to the CSU try to get the carrier to turn on this option CRC errors ESF T1 circuits offer CRC 6 error checking as a means of detecting changes in data which occur on the T1 circuit if CRC errors are reported the errors are occurring at some point between the two CSUs verify house as indicated above contact the carrier and request they monitor the circuit carriers can monitor a T1 circuit for CRC errors without disrupting user data Verilink SCC 2020 User Manual 5 11 Diagnostics Trouble Suggestion Alarm when a Verilink AS 2000 CSU reports ALARM in the Craft interface it is receiving a yellow alarm RAIS on that port T1 devices send a yellow alarm to alert the far end device when they are in a red alarm condition such as Loss Of Signal LOS Loss Of Frame LOF or Alarm Indi
71. nto the product e If the product has been exposed to rain or water e If the product has been dropped or if the cabinet has been damaged Verilink s product warranty covers repair or replacement of all equipment under normal use for a five year period from date of shipment Replacement products may be new or reconditioned Any replaced or repaired product or part has a ninety 90 day warranty or the remainder of the initial warranty period whichever is longer Our in house Repair Center services returns within ten working days Verilink offers the following services System Engineers at regional sales offices for network design and planning assistance 800 837 4546 Technical Assistance Center for free 24x7 telephone support during installation maintenance and troubleshooting 800 285 2755 and support verilink com To return a product it must be assigned a Return Materials Authorization RMA number before sending it to Verilink for repair 800 926 0085 ext 2282 Maintenance contracts and leasing plans 800 837 4546 Technical Training on network concepts and Verilink products 800 282 2755 and training verilink com Web site www verilink com This manual was written and illustrated by Steve Rider Contributing writers include David Fradelis Marie Metivier Theresa Lau and Barbara Termaat Verilink SCC 2020 User Manual Vv vi Verilink SCC 2020 User Manual Table of Contents Overview A A Ea ai 1 1
72. o pin five the other jumper connects pin two to pin four See Figure 5 5 for a drawing of a T1 loopback plug NOTE When using a T1 loopback plug it may be necessary to temporarily change the timing selection in the CSU If the CSU is set to recover network clock it will be trying to recover a clock it is trying to recover the clock frequency will drift For this test set the CSU clock source to Internal Verilink SCC 2020 User Manual 5 13 Diagnostics Figure 5 5 T1 Loopback Plug 5 14 Verilink SCC 2020 User Manual Numerics 1 in 8 test 5 5 1 544 MHz clock 3 8 24 Hour Bursty Errored Seconds 4 4 24 hour Errored Seconds 4 3 24 Hour Loss Of Frame Count 4 7 24 Hour Severely Errored Seconds 4 5 24 Hour Unavailable Seconds 4 6 3 in 24 test 5 4 458 102119 008 3 2 62411 3 7 64K per DSO 3 6 96 fifteen minute intervals 4 3 A A D amp l NET 3 10 AAUI 14 3 12 Access System 2000 1 1 ALARM 5 3 Alarm reporting 3 9 Alarm Status 5 1 Alarm threshold 3 7 alternative Craft cable 3 2 AMI or B8ZS 3 6 Answer 3 15 Answer Command 3 15 Answer Inactive Timeout 3 15 APS 2000 1 2 ASCII 1 2 AT amp T 54016 3 7 auto answer string 3 15 Automatic Protection Switch 1 2 B B8ZS 3 7 balanced clock signal 3 8 bantam jacks 1 3 boot 3 13 busy to a PBX 3 10 C 3 4 Cable length option 3 7 canned config 3 8 Canned configuration 3 8 CIM 1 3 CIM 2022 1 5 CIM 2052 1 5 CIMs 1 5 Class C add
73. ode Administration Menu 3 10 In addition to the T1 CSU functions the SCC 2020 is also an SNMP node controller The Node Administration Menu and submenus beneath it are used to configure site Ethernet and SLIP address information Some functions on the Node Administration Menu support firmware upgrade procedures The Node Administration Menu is accessed by selecting Oonthe SCC 2020 Main Menu Figure 3 4 shows the options presented Most of the commands on the Node Administration Menu are documented in Table 3 5 below Some of the menu options on the Node Administration Menu will produce submenus with detailed selections for instance the Modem Configuration Menu is detailed in Table 3 6 Verilink SCC 2020 User Manual Configuration Figure 3 4 Node Administration Menu T D N A E M G 0 Q H c W F B R 5 P U Y X NODE CONTROLLER MENU ti me date node id site name Slip Configuration Ethernet Configuration Modem Configuration IP over T1 Configuration IP Gateway IP Route trap host ip address community string read community string write flash download boot reset com ports node controller status set privileged password set unprivileged password element download exit menu 1 1 NEAR TAC 2010 gt If any changes are made to the Ethernet or SLIP configurations those changes do not take effect until the module is rebooted Rebooting an SCC 2020 b
74. oller CIM 2052 DB 15 DB 15 AAUI 14 DB 9 Figure 1 2 CIM 2022 Back Panel RJ 48C o 2 y J La o x ES E x e o 2 Figure 1 3 co a pa e x x x x o o DB 15 Equipment RJ 48C Equipment The following illustrations show the connector interface modules used with the SCC 2020 O MANAGEMENT EXTENSION CIM 2052 Back Panel DB 15 MANAGEMENT EXTENSION AAUI 14 female Ethernet ALAR RELAY AAUI 14 female Ethernet Aad NO COM NC NO COM NC gt EXT TIMING gt EXT TIMING DB 9 male SLIP DB 9 male SLIP Verilink SCC 2020 User Manual MANAGEMENT PORT IN MANAGEMENT PORT IN NETWORK RJ 48C T1 NETWORK 1 5 Overview 1 6 Verilink SCC 2020 User Manual EN Chapter Connect to Craft Port Login Quick Set Up This section details a quick step by step procedure for configuring the SCC 2020 For the purpose of this quick configuration guide the assumption is made that you are using the SCC 2020 with a single DIU 2130 DSU module and dividing the bandwidth of an ESF B8ZS T1 evenly between the two data ports of the DIU 2130 It is most likely that this procedure will not match your configuration exactly Use this chapter as a guide to the process of installing your equipment Complete details on configuration covering all selectable options may b
75. onal CSU cards are needed use TAC 2010 cards instead of adding more SCC cards Therefore a C located in the slot 1 shelf 1 position will represent an SCC 2020 while a C located at some other position will represent a TAC 2010 Use the command C which brings up the Configuration menu for the element Verilink SCC 2020 User Manual Configuration Figure 3 2 CSU Configuration Menu CSU CONFIGURATION Beer lt lt eq lt lt W framing ESF F format B8ZS J jitt buf 40 BITS R eq crc PASS Y xcode yel OFF M distance 0 133 X exit menu V Inband Management A diu bus A P prm OFF G Alarm ENABLE 1 2 NEAR TAC 2010 gt FW Rev 1 6 HW Fab 0 8 Type TAC 2010 K keep alive FAIS lt lt net lt lt T almthld DEF W framing ESF F format B8ZS J jitt buf 40 BITS R net crc PASS Y xcode yel OFF L Ibo 0 DB ONES gt gt net gt gt fesses Z density NONE a Do ao o a Do C1 C5 canned config Commands ACCEPT B diu clock INT 0 poll far end OFF Configuration Menu Commands Some of the commands on the CSU Configuration Menu are shown on both the left and right sides of the screen Commands that are used for both DSX 1 equipment and T1 network ports are repeated on both the equipment and the net side of the diagram Command prompts for these options present pairs of values the value for the equipment side is follow
76. oopback or a compatible test signal source B clear cntr Resets test error counter Used to reset the test error counter to zero after a test or before a new test N end tests Ends tests and LOCAL loopbacks Used to end any running test patterns as well as terminating any loopbacks in the local CSU 1 qrss Starts QRSS test CSU transmits a Quasi Random test pattern while monitoring the receive pair for the same signal to be returned This test is widely supported by telephone carrier test facilities This test pattern is valid for all T1 circuit types 2 3 in 24 Starts 3 in 24 test CSU transmits a 3 in 24 test pattern while monitoring the receive pair for the same signal to be returned 3 in 24 guarantees that of any 24 bits sent at least 3 will be ones thus strings of twenty one contiguous zeroes are possible Because this pattern may have strings of up to 21 zeroes in a row it may fail on some perfectly good AMI T1 circuits as equipment in the circuit enforces ones density 5 4 Verilink SCC 2020 User Manual Diagnostics Menu Option Description Instructions 3 1in8 Starts 1 in 8 test CSU transmits a 1 in 8 pattern which guarantees one bit of every 8 will be a one while monitoring the receive pair for the same signal to be returned This test pattern is valid for all T1 circuit types 4 all 1 Starts all ones pattern The CSU transmits a framed pattern of all
77. ort 2 data port 2 ignored by TAC 2130 83 TAC 2130 Canned configuration 3 assigns timeslots 1 8 to data port 1 and DIU 2130 timeslots 9 16 to data port 2 data port 2 ignored by TAC 2130 84 TAC 2130 Canned configuration 4 assigns timeslots 1 6 to data port 1 and DIU 2130 timeslots 7 12 to data port 2 data port 2 ignored by TAC 2130 85 TAC 2130 Canned configuration 5assigns timeslots 1 4 to data port 1 and DIU 2130 timeslots 5 8 to data port 2 data port 2 ignored by TAC 2130 86 TAC 2130 Canned configuration 6 assigns timeslots 1 2 to data port 1 and DIU 2130 timeslots 3 4 to data port 2 data port 2 ignored by TAC 2130 Verilink SCC 2020 User Manual 3 27 Configuration Code Applies to Description 87 TAC 2130 Canned configuration 7 assigns timeslots 1 23 to data port 1 and DIU 2130 timeslot 24 to data port 2 data port 2 ignored by TAC 2130 88 TAC 2130 Set DTE port s clock to TT data port samples Transmit Data during DIU 2130 negative going transition of clock received from DTE on the pair DIU 2131 Terminal Timing in RS 422 SCTE in V 35 or XTC in RS 232 89 TAC 2130 Set DTE port s clock to inverted ST ST data port samples Transmit DIU 2130 Data lead during positive going transition of transmit clock signal 90 TAC 2130 Set DTE ports to n x 56 kbit s as required for an AMI T1 DIU 2130 91 TAC 2130 Unassign Port 1 timeslot s DIU
78. rectly through the Craft port on the SCC 2020 module or through an Ethernet or SLIP connection using Telnet Before you can use Telnet you must configure certain IP address and related parameters via direct local connection to the Craft port on the SCC Node Controller front panel After these IP addresses and options are set future Craft sessions may use either the local Craft port or Telnet As with all other AS2000 controller modules only one ASCII direct connection session can exist on a given module at a time Up to two sessions are supported over Telnet With version 3 x or newer SCC firmware you may be able to option far end nodes See the section Far End Management for details Using the Craft Interface Verilink SCC Craft Port Terminal Setup To access the Craft interface connect a terminal or a computer running a terminal program to the Craft port located on the front panel of the SCC 2020 module Set your terminal parameters to Data Rate 19 2 kbit s Word Size 8 bits Parity None Stop Bits One Flow Control None The Verilink Craft interface does not assert any control leads Verilink SCC 2020 User Manual 3 1 Configuration Logging On 3 2 Verilink provides a cable called a Craft cable which has an RJ 11 modular connector at one end and a female DB 25 connector at the other Connect the RJ 11 modular connector to the port labeled CRAFT on the front of the SCC 2020 module The Craft cable pinou
79. ress 3 12 clear cntr 5 4 community string read 3 13 community string write 3 13 Configuration 3 1 configuration 3 4 Connecting Terminal 2 1 craft 2 1 Index Craft Cable 3 2 Craft Interface 3 1 CRC ERRORS 5 3 CRC 6 error checking 5 11 crosstalk 5 11 CSU loops 5 4 CSU Mode 3 9 CSU mode 3 8 D D amp I NET 3 8 data bus A 3 8 data bus B 3 8 data bus C 3 8 date 3 11 DB 9 Craft Cable 3 2 density enforcement 3 7 derives transmit clock 3 8 Diagnostic Commands 5 4 Diagnostics 5 1 Diagnostics Menu 5 2 dialing out to trap host 3 15 Dial Out 3 15 Dial Out Command 3 15 Dial Out connect retries 3 15 Dial Out Inactive timeout 3 15 Dial Out Number 3 15 distance 3 7 DIU 2131 1 1 diu bus 3 8 diu clock 3 8 DIX 3 12 download binary 3 20 element download 3 13 Firmware upgrades 3 18 FTP file transfer 3 18 FTP server 3 18 version 1 69C 3 19 Drop And Insert Mode 3 10 Drop and Insert mode 3 8 DTE reports errors 5 12 E ejector 1 4 enable loops 5 4 end tests 5 4 EQPT LED 3 8 equipment loopback 5 4 ES 4 2 Establish a loopback 5 1 Ethernet Configuration 3 12 Ethernet connector 3 12 Ethernet IP address 3 12 Ethernet transceiver 3 12 Ethernet Type 3 12 Ethernet DIX 3 12 EXT 422 3 8 Verilink SCC 2020 User Manual Index 1 EXT CLK LOSS 5 3 EXT TTL 3 8 external clock 3 8 F far element 3 4 Far End Loop 5 8 far end polling 3 9 Far End Main Menu 3 17 Far End Management 3 16 FDL 3 9 flash bank to boot
80. rk LBO 0 dB Typical value use when a T1 installed by a local TAC 2010 Bell carrier is terminated in a smart jack network termination TAC 2130 device or the first repeater is 2000 to 3000 feet away 48 SCC 2020 Network LBO 7 5 dB Attenuates transmit signal by 7 5db USE ONLY TAC2010 IF NO SMART JACK IS PRESENT implies that the first active device TAC 2130 repeater T3 mux far CSU is 1000 to 2000 feet away 49 SCC 2020 Network LBO 15 dB Attenuates transmit signal by 15db USE ONLY TAC2010 IF NO SMART JACK IS PRESENT implies that the first active device TAC 2130 repeater T3 mux far CSU is O to 1000 feet away 50 SCC 2020 Selects DSX 1 Equipment cable length of 0 132 ft TAC 2010 51 SCC 2020 Selects DSX 1 Equipment cable length of 133 265 ft TAC 2010 52 SCC 2020 Selects DSX 1 Equipment cable length of 266 398 ft TAC 2010 53 SCC 2020 Selects DSX 1 Equipment cable length of 399 532 ft TAC 2010 54 SCC 2020 Selects DSX 1 Equipment cable length of 533 655 ft TAC 2010 55 SCC 2020 Set data bus to NONE CSU mode default TAC 2010 56 SCC 2020 Set data bus to A Mux mode TAC 2010 DIU 2140 57 SCC 2020 Set data bus to B Mux mode TAC 2010 DIU 2140 3 26 Verilink SCC 2020 User Manual Configuration Code Applies to Description 58 SCC 2020 Set data bus to C Mux mode TAC 2010
81. ro to disable the retry function K Dial Out connect timeout Length of time to wait for a connection after initiating a dial out call Enter a value in seconds to wait for a connection after dialing a call to a trap host range 10 to 255 seconds 1 Dial Out Inactive timeout Length of time a dial out Call is allowed to be idle before the modem is disconnected Enter a value in seconds for idle time before disconnect range 1 to 255 if this value is reached the DTR lead is toggled low to disconnect the modem modem should be set for amp D2 disconnect on DTR low S Dial Out Command used for The Dial Out command causes the modem to dial testing now W Set default Rests all modem menu Use this command to set all options on this menu to commands items to default values their original factory default values disables modem A Answer Sends answer string Use this command to set modem to answer mode by sending the configured answer command now H Hangup Disconnects modem Causes modem to disconnect now by dropping DTR X exit Exits to menu above Returns to Node Administration Menu Verilink SCC 2020 User Manual 3 15 Configuration Far End Management You may be able to access the SCC module in a far end node and through it option any module in the node Requirements For far end management to work the following conditions must be true The SCC firmware revis
82. rt RS 232 DSU FDL attempt to reach the Far Element from the Main 9 FAR TAC 2130 an IDCSU at a remote site MERE 10 FAR TAC 2110 an APS CSU at a remote site 11 DIU HLM a DIU 2131 V 35 RS 232 two port DSU F file Name of the upgrade file Use the name as it was supplied by Verilink S shelf Shelf or range of shelves Enter a single number or a range as in 1 4 L slot Slot or range of slots Enter a single number or a range as in 1 13 D dwnload Starts the download Set all other parameters first then issue the D command X exit menu Exits to menu above Returns to Node Administration Menu Thumbwheel Switches 3 24 Thethumbwheel switches on the front of the SCC 2020 module are provided as a measure of last resort for configuring the SCC and or application modules it controls when terminal access to the Craft interface is not possible It is preferred practice to use the Craft interface a Telnet session or an SNMP manager instead of the thumbwheels The SCC 2020 is able to control up to 51 other modules in up to 4 shelves Thethumbwheel switches are only able to address the first 30 slots thus it is not possible to use thumbwheel commands to configure a module if it is in the 31st to 52nd slot of a four shelf node Verilink SCC 2020 User Manual Thumbwheel Procedure Thumbwheel Commands Configuration A four step procedure is used for each thumbwheel command 1
83. s Alarm Indication Signal AIS which is often used as a Keep Alive signal on T1 circuits SIGNAL LOSS Loss Of Signal LOS The CSU does not detect any pulses on the port this is the worst possible alarm condition on a T1 port ignore other alarms and resolve the cause of the LOS first CRC ERRORS Cyclic Redundancy Check errors CRC 6 the CSU detects errors using the CRC 6 feature of ESF framing applies only to T1 circuits or equipment using ESF framing LOW DENSITY The T1 signal on the port does not meet the required average ones density of 12 5 BPV The CSU is detecting Bipolar Violations on the port two or more pulses in a row were of the same polarity violating the Alternating Mark Inversion requirement EXT CLK LOSS The CSU is configured to use an external clock signal and that signal is not detected PULSES Not an alarm condition the CSU does see valid pulses on the port When a CSU is in Mux mode PULSES should always be displayed on the equipment side of the menu In Mux mode only synchronous serial interfaces are used and the CSU does not expect to see any particular framed pattern of pulses Verilink SCC 2020 User Manual 5 3 Diagnostics Diagnostic Commands Table 5 2 There are seventeen command options available on the SCC 2020 diagnostics menu Table 5 2 lists all of these commands Diagnostic Commands Menu Option Description Instructions X exit menu Exits to menu above Returns to the SCC 2
84. s as well as offering command options which may be used to establish and terminate loopbacks and test patterns A typical way of using the Diagnostics Menu might involve the following steps 1 Establish a loopback somewhere in the circuit path 2 Start transmitting a test pattern 3 Observe the test error counter to see if the test pattern is received as t was sent a If no errors are observed move the point of loopback further away to test more of the circuit path or b If errors are observed move the point of loopback closer to determine the source of the problem 4 Stop the test pattern drop all loopbacks then a Place the T1 circuit back into service if all tests passed or b Contact the appropriate vendor if a problem was found In addition to offering the ability to put up and take down loopbacks and test patterns the Diagnostics Menu also offers information about the current status of the DSX 1 equipment interface and DS 1 network interface The top half of the Diagnostics Menu includes a drawing made up of ASCII characters which represents the operation of the CSU The equipment interface is shown on the left and the network interface is shown on the right In the area to the left and right of the line drawing of a framer status information is represented by words displayed in upper case characters Verilink SCC 2020 User Manual 5 1 Diagnostics Diagnostics Menu A sample of the Diagnostics Menu
85. s the address for a device usually a router used to reach IP addresses on a different network segment Internet Gateway Configuration 128 0 0 0 if no IP gateway is used leave the default value as shown if a gateway device is used type G and enter the IP address of the gateway G Internet Gateway IP address Q IP Route Calls a submenu used to configure IP routes IP routes functions only when using ESF T1 circuits with end to end FDL continuity see the section on IP routes below Verilink SCC 2020 User Manual Configuration Menu Option Description Instructions H trap host ip Used to configure IP host configuration for traps address addresses for up to four SNMP N Number of trap hosts 1 managers to which 1 host 1 ip address 192 94 45 111 alarm information trap messages will 2 host 2 ip address 0 0 0 0 be sent 3 host 3 ip address 0 0 0 0 Set number of trap 4 host 4 ip address 0 0 0 0 hosts equal to the a number of IP X exit addresses used C community string SNMP community Community string Read public Change Y N read string a Community string 64 rudimentary 9 password The current value for the read community string is public and a string of up to 64 characters can be entered W community string SNMP community Community string Write Right Change Y N write string a p EN
86. ss will take about a minute more or less depending on LAN segment traffic If using FTP over SLIP instead of Ethernet it may require 15 to 30 minutes to transfer the file 12 End the FTP session by typing quit and you will be returned to the pSH gt prompt in the SCC 2020 13 Confirm that the transfer was successful by issuing the command Is 1 and comparing the size of FLASH HEX to FLASH B as recorded in step 9 If the file sizes do not match DO NOT PROCEED instead type rm flash hex to remove the incorrect size file and return to step 5 14 If the file sizes match in step 13 type craft and login to the Craft interface 15 Select the Node Administration Menu by typing O 16 Select flash download by typing F 17 Select flashbank B 18 Once the flash download is complete use the B command to boot Boot from flashbank B Login to the craft interface of the SCC and verify that the version of firmware being executed as shown on the top line of the Main Menu is the version you just installed If you received new firmware for both flashbank A and flashbank B it is not necessary to upgrade both flashbanks to the same revision It may be more desirable to leave the original version of firmware in flashbank A permanently or while the new firmware in bank Bis tested To upgrade flashbank A use the first procedure listed in this section Downloading Version 1 69C to Flashbank A su
87. ssful by issuing the command Is 1 and comparing the size of FLASH HEX to FLASH A U as recorded in step 9 If the file sizes do not match DO NOT PROCEED instead type rm flash hex to remove the incorrect size file and return to step 5 14 If the file sizes match in step 13 type craft and login to the Craft interface 15 Select the Node Administration Menu by typing O 16 Select flash download by typing F 17 Select flashbank A 18 Once the flash download is complete use the B command to boot Type A to select flashbank A You will see that you are running version 1 69C Now proceed to upgrade bank B 3 20 Verilink SCC 2020 User Manual Upgrading Flashbank B You will need to know Step by Step Configuration Use this procedure to upgrade flashbank B only if one of the following is true e Flashbank A contains version 1 69C firmware Flashbank A contains a version of firmware higher than 1 80 Thetop line of the SCC 2020 Main Menu indicates which version of firmware is currently running and the second line indicates which flashbank the current firmware was loaded from To determine which version of firmware is in the other flashbank use the boot option on the Node Administration Menu and select that flashbank e ThelP address of the FTP server e The absolute path to the directory containing the Verilink SCC upgrade files e The password if required for accessin
88. ssion to the SCC card to be upgraded 2 Usethe O command to select the Node Administration Menu 3 Type B to reboot Verilink SCC 2020 User Manual 3 19 Configuration NOTE The boot command reboots only the SNMP and Craft interface functions of the SCC 2020 any user data passing through the CSU portion of the SCC 2020 will not be affected 4 Select flashbank B 5 When the pSH gt prompt returns type FTP lt P address of FTP server gt 6 Login to the FTP server using the method required by your FTP server program 7 Usethe CD command to change to the directory where you previously placed the file FLASH A U 8 Use DIR or Is 1 as appropriate to produce a long display of the files in this directory 9 Record the file size of the FLASH A_U file 10 Issue the command binary NOTE If you fail to issue the command binary the file will be corrupted when it is transferred 11 Issue the command get flash a_u flash hex The file is now transferred from the FTP server to a RAM disk in the SCC card If you are using Ethernet this process will take about a minute more or less depending on LAN segment traffic If using FTP over SLIP instead of Ethernet it may require 15 to 30 minutes to transfer the file 12 End the FTP session by typing quit and you will be returned to the pSH gt prompt in the SCC 2020 13 Confirm that the transfer was succe
89. t is as follows Table 3 1 DB 25 Craft Cable p n 458 501788 008 DB 25 female RJ 11 modular Usage pin 2 pin 3 Transmit Data pin 3 pin 4 Receive Data pin 7 pin 5 Signal Ground Your computer may have a DB 9 connector requiring a second cable or adapter to complete the connection For this purpose use the same type of standard PC AT serial cable as would be used to connect to an external modem An alternative Craft cable uses DB 9 and RJ 11 connectors It is wired according to the pinout shown below Table 3 2 DB 9 Craft Cable p n 458 102119 008 DB 9 female RJ 11 modular Usage pin 3 pin 3 Transmit Data pin 2 pin 4 Receive Data pin 5 pin 5 Signal Ground The first thing you will see after connecting your terminal and hitting the ENTER key s pSH gt Certain TCP IP and UNIX commands are available from this prompt ping FTP mv rm Is Most often you will want to use the Craft interface To reach the Craft interface from the pSH gt prompt type the word craft in lowercase pSH gt craft Then you ll see the password prompt YOUR PASSWORD Initially there is no password so just press ENTER again The top or Main Menu is displayed Verilink SCC 2020 User Manual Configuration Figure 3 1 SCC 2020 Main Menu VERILINK SCC NODE CONTROLLER at 1 1 FW Rev 3 02 Jan 14 1999 FLASH BANK B Serial Number 00655503 Ethernet Address A0 6A 00 0A 0
90. t the receive circuitry is defective the signal received will fail and the CSU will declare an alarm Use the R command on the Diagnostics Menu to initiate a repeater loopback A warning message appears Service Affecting Are you sure Y N Press y because you are sure During a repeater loopback test the NET LED on the CSU should be green and the EQPT LED should be amber The STAT LED will usually turn red because of a transient bit error condition which occurs at the instant the test begins Ignore the STAT LED when conducting loopback tests on a CSU If the EQPT LED blinks amber to red during a repeater loopback errors are being detected in the DSX 1 data presented by the local equipment Verify cabling and option compatability If the NET LED is not green during a repeater loopback test please contact Verilink Technical Support for assistance If the repeater loopback test passes your CSU is not defective For troubleshooting tips related to non CSU problems see Table 5 6 below Verilink SCC 2020 User Manual Diagnostics Table 5 6 Troubleshooting Tips Trouble Suggestion Signal loss verify that a T1 circuit is connected to the network port verify that a proper cable is used T1 circuits utilize pins 1 2 4 and 5 when presented in an RJ 45 connector use a straight through cable 1 to 1 2 to 2 etc on the network side of the CSU use a crossover cable on the DSX 1 equipment side
91. the CSU loops data equipment has failed received from the T1 back toward the T1 to meet pulse or is disconnected density requirements The value none 3 ais the CSU sends a pattern of unframed all ones should not be used Alarm Indication Signal to the network during a DSX 1 on a commercial T1 equipment failure thus alerting the carrier and far end circuit as it violates equipment to trouble on the Tl Ds amp T 4 fais the CSU sends a framed pattern of all ones this 5 an should not create a T1 level alarm but voice switching T1 403 equipment will see all 24 timeslots in a busy state T alm thld Selects enabling or 1 disable Alarm threshold function is shut off disabling thresholds E 2 default Default values for alarm thresholds are enabled 1 idle code Selects idle pattern to 1 flag s idle code of 01111110 is sent in Facilities Data be sent in 4K FDL Link when no other traffic is present used for ESF circuits only no effect on SF 2 one s idle code of 11111111 is sent in Facilities Data Link when no other traffic is present Z density Selects density 1 NONE no density enforcement use this value only and enforcement technique Density should always be set to NONE on a B8ZS T1 B8ZS allows a full 64K per DSO Density should never be set to NONE on an AMI T1 always on a B8ZS T1 2 12 The CSU begins stuffing ones into the user datastream after 12 consec
92. the manual Unplug the hardware from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleaners Use a cloth slightly dampened with water Do not place this product on an unstable cart stand or table It may fall causing serious damage to the product Slots and openings in the shelves are provided for ventilation to protect them from overheating These openings must not be blocked or covered Never place this product near a radiator or heat register Verilink SCC 2020 User Manual Product Warranty Customer Service Publications Staff This product should be operated only from the type of power source indicated on the marking label and manual If you are unsure of the type of power supply you are using consult your dealer or local power company Do not allow anything to rest on the power cord Do not locate this product where the cord will interfere with the free movement of people Do not overload wall outlets and extension cords as this can result in fire or electric shock Never push objects of any kind into the shelves They may touch dangerous voltage points or short out parts that could result in fire or electric shock Never spill liquid of any kind on this equipment Unplug the equipment from the wall outlet and refer servicing to qualified service personnel under the following conditions When the power supply cord or plug is damaged or frayed e If liquid has been spilled i
93. tor alarms OFF C configuration A view alarm buffer P performance X log off 1 1 NEAR TAC 2010 gt CSU When installing an SCC 2020 or TAC 2010 module which is to be Configuration 2 2 used with any type of DIU 21xx module always configure the CSU module before configuring anything on the DIU 21xx module When the DIU 21xx is configured it is connected logically to a CSU At that instant the DIU gets information from the CSU as to which Data Bus in the shelf midplane to use If the CSU has not been configured yet the DIU 21xx will not get a correct bus assignment This is why the CSU should be configured first Type C and press ENTER The Configuration Menu is presented Verilink SCC 2020 User Manual Quick Set Up Figure 2 2 SCC 2020 Configuration Menu CSU CONFIGURATION X A P G lt lt el lt lt framing SF format AMI jitt buf 40 BITS eq cre REGEN xcode yel TO NET distance 0 133 exit menu diu bus NONE prm OFF Alarm ENABLE 1 1 NEAR TAC 2010 gt FW Rev 1 6 HW Fab 0 8 Type TAC 2010 K keep alive AIS lt lt net lt lt T almthld DEF I idle code ONES gt gt net gt gt o Z density 12 80z W framing ESF F format AMI J jitt buf 40 BITS R net cre REGEN Y xcode yel OFF L Ibo 0 DB C1 C5 canned config B diu clock THRU 0 poll far end OFF The factory default values for the
94. utive zeroes 3 62411 The CSU enforces AT amp T publication 62411 density restrictions average 12 5 minimum ones density 4 80 0 s The CSU begins stuffing ones into the user datastream after 80 consecutive zeroes recommended 5 15 0 s The CSU begins stuffing ones into the user datastream after 15 consecutive zeroes Verilink SCC 2020 User Manual 3 7 Configuration Menu Option Description Instructions C1 C5 canned config Allows selection of any of five complete configurations which all use CSU mode no DIU 21xx and vary according to framing and line coding on EQ and Net sides Canned configuration 1 EQPT SF AMI NET ESF AMI Canned configuration 2 EQPT ESF AMI NET ESF AMI Canned configuration 3 EQPT SF AMI NET ESF B8ZS Canned configuration 4 EQPT SF B8ZS NET ESF B8ZS Canned configuration 5 EQPT ESF B8ZS NET ESF B8ZS the Transmit Clock used by the CSU to transmit data toward the T1 network Note that in CSU mode DIU Bus NONE this option is ignored the SCC 2020 performs as though THRU timing were selected In Drop And Insert mode use of THRU timing is suggested In Mux mode if the far end CSU is set for INT clock or if the carrier is using a DACS to provide a clock then NET recovered network clock is required V Inband Selects allowing or Requires SCC firmware revision 3 02 or higher and TAC Management dis allowing 201
95. y using the boot command has no effect on user data passing through the SCC 2020 module NOTE The SLIP IP address and the Ethernet IP address must reflect different network segments in terms of the subnet masks in use If the SLIP and Ethernet addresses are set to reflect the same network segment an error message Sendto new socket failed will repeat constantly until the error is corrected and the SCC 2020 is rebooted Table 3 5 Node Administration Commands Menu Option Description Instructions T time Sets the time of Enter new time hh mm ss use the format shown day D date Sets the date Enter new date mm dd yy use format shown I nodeid Sets a numeric Maximum field length ten digits distinguishes one node identifier from another each node in a network must have a unique node id Verilink SCC 2020 User Manual 3 11 Configuration Menu Option Description Instructions N site name Sets an alpha numeric identifier used to tell one node from another Site Name Tech Pubs SCC 2020 Change Y N if yes is selected a second prompt appears New Site Name 40 enter a site name using up to 40 alpha numeric characters A Slip Configuration Calls a submenu which is used to configure the RS 232 electrical DB 9 physical Serial Line Internet Protocol port on the rear connector module SLIP may be used in lieu of or along with th

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