background image

12

Section 61245002L6-5, Issue 3

61245002L6-5C

Figure 12.  Loopback Options, Dual Loop Screen

  CIRCUIT ID: XXX                                              10/06/98  09:23:42
                                LOOPBACK OPTIONS
                _____                _____                _____
               |HTU-C|              |HRE 1|              |HTU-R|
               |     |      LP1     |     |     LP1      |     |
           --->|-----|<============>|-----|<============>|-----|<---
               |     |              |     |              |     |
           NET |     |              |     |              |     | CUST
               |     |      LP2     |     |     LP2      |     |
           <---|-----|<============>|-----|<============>|-----|--->
               |     |              |     |              |     |
               |_____|              |_____|              |_____|

                  1) LOOPBACK TO NETWORK  AT HTU-C = INACTIVE
                  2) LOOPBACK TO CUSTOMER AT HTU-C = INACTIVE
                  3) LOOPBACK TO NETWORK  AT HTU-R = INACTIVE
                  4) LOOPBACK TO CUSTOMER AT HTU-R = INACTIVE
                  5) LOOPBACK TO NETWORK  AT HRE-1 = INACTIVE
                  6) LOOPBACK TO CUSTOMER AT HRE-1 = INACTIVE

              Press corresponding number to toggle loopback option.
                      Press “M” to return to the Main Menu

Figure 13.  Provisioning Screen

CIRCUIT ID: EMUL                                              10/06/98  00:23:50

PROVISIONING

      A.  DSX-1/DS1 LINE CODE    =  B8ZS
      B.  DSX-1/DS1 FRAMING      =  AUTO
      *   NIU LOOPBACK           =  ENABLED
      C.  NEW ENGLAND 1:6 LPBK   =  ENABLED
      D.  LOOPBACK TIMEOUT       =  NONE
      E.  CUSTOMER LOSS RESPONSE =  AIS
      F.  LATCHING LOOPBACK MODE =  T1
      *   PRM MODE               =  SPRM
      *   DS1 TX LEVEL           =  0 dB
      G.  SPAN POWER             =  ENABLED
      H.  SINGLE LOOP OPERATION  =  DISABLED
      I.  SINGLE LOOP AIS        =  ENABLED

* Option not configurable from this terminal

     Press:  Option letter - to change option setting
             Enter - to implement and save current setting changes
             “M”   - to return to the main menu

Summary of Contents for AHT1U

Page 1: ...L Deployment Guidelines 15 Figure A 1 HDSL Loopback Points A 1 Figure A 2 Element State Diagram A 1 TABLES Table A Screen Abbreviations 6 Table B Provisioning Options 14 Table C LED Alarms 15 Table D...

Page 2: ...for a generic subscriber interface unit The Litespan HTU C can be used in Litespan 2000 Litespan 2012 and Litespan ONU channel bank assembly CBA systems containing Litespan system software versions of...

Page 3: ...ssembly Figure 3 shows possible ADTRAN HDSL deployments from a Litespan channel bank assembly ADTRAN HDSL systems can be deployed quickly without the use of expensive T1 repeater equipment on standard...

Page 4: ...trol assembly begins looking for the reinsertion of the linecard Reinsertion any earlier than this may temporarily lock the HTU C into a nonfunctional state because the common control assembly will no...

Page 5: ...the Litespan HTU C and another linecard in the asynchronous T1 linecard class or another Litespan HTU C If the cross connected unit is not an HTU C then T1 provisioning of the cross connected unit ma...

Page 6: ...bbreviations used in the screen diagrams see Table A Figure 5 RS232 DB9 Connector 6 7 8 9 1 2 3 4 5 TXD Transmit Data RXD Receive Data SGN Signal Ground Table A Screen Abbreviations Abbreviation ES SE...

Page 7: ...nt System Status screen type Z to reset the performance registers to zero at both the Current System Status and Performance History screens Figure 8 consolidates current information for the HDSL DSX 1...

Page 8: ...configuration and allows for changing this configuration Provisioning changes are only allowed at the Litespan HTU C and not at the HTU R The HTU R provisioning is set directly from the provisioning...

Page 9: ...URRENT SYSTEM STATUS LOOP 1 CUSTOMER LOOP 2 HRE 1 HRE 1 30 30 dB 31 31 dB LOSS CUR MAX 31 31 dB 30 30 dB YES YES SYNC YES YES 000 00000 003 00003 ES 15M 24H 000 00000 000 00000 000 00000 000 00000 SES...

Page 10: ...view number to select view 05 30 01 30 Press P for previous view Press B to go back 8 hours Press M to return to the Main Menu LOOP 1 NETWORK LOOP 2 CURRENT SYSTEM STATUS LOOP 1 CUSTOMER LOOP 2 HTU C...

Page 11: ...07 15 03 15 07 00 03 00 1 H 3 LOOP1 4 H 06 45 02 45 T T 06 30 02 30 U U 06 15 02 15 C 5 LOOP2 6 R 2 06 00 02 00 05 45 01 45 Press view number to select view 05 30 01 30 Press B to go back 8 hours Pre...

Page 12: ...HRE 1 INACTIVE Press corresponding number to toggle loopback option Press M to return to the Main Menu Figure 13 Provisioning Screen CIRCUIT ID EMUL 10 06 98 00 23 50 PROVISIONING A DSX 1 DS1 LINE CO...

Page 13: ...m Status and Troubleshooting screens Red yellow and blue alarms at both DSX 1 and DS1 interfaces plus HDSL loop synchronization loss conditions are reported Table C defines faceplate LED alarm functio...

Page 14: ...hronization or when a signal loss is detected at the HTU R T1 receiver This allows either DS0s 1 through 12 or 13 through 24 to be passed until full T1 bandwidth is restored In HDSL applications invol...

Page 15: ...n progress FAIL Illuminates upon HTU C powerup Remains On until the HTU C is successfully initialized The length of time to complete this procedure is dependent on activity of the terminal control pro...

Page 16: ...GAUGE OR COARSER CABLE KFT 5 6 7 8 9 2 5 INVALID HDSL CABLE LENGTHS 2 0 1 5 1 0 0 5 0 0 TOTAL BRIDGED TAP LENGTH KFT VALID HDSL CABLE LENGTHS Loop loss per kft for other wire is summarized in Table E...

Page 17: ...tine maintenance ADTRAN does not recommend that repairs be performed in the field Repair services may be obtained by returning the defective unit to the ADTRAN Customer Service RMA department see subs...

Page 18: ...te the equipment record i e dlt eqpt cot 1 15 with TL1 and reinsert the card or equip the slot with the currently reserved equipment type 1 Check that neither HDSL loop is open 2 Check that neither or...

Page 19: ...imited by a 500 mA Slo Blo subminiature surface mount fuse 5 VDC is current limited by a 3A quick acting subminiature surface mount fuse Clock Clock Sources Internal DSX 1 derived Internal Clock Accur...

Page 20: ...S0 DP tandem element and provide a network loopack Loopback Control Codes A summary of control sequences is given in Tables A 1 and A 2 NOTE In all control code sequences presented the in bandcodesare...

Page 21: ...the HRE will loop up towards the network 2 seconds of AIS all 1s will be sent 5 seconds of data will pass and then 200 bit errors will be injected into the DSX 1 signal As long as the pattern continu...

Reviews: