ADC H2TU-C-319 List 4E - page 35

LTPH-UM-1049-02, Issue 2 Provisioning

H2TU-C-319 List 4E January 9, 2002 27

a successful loopdown is reported; otherwise, a failed loopdown is reported. The loop-down can also be initiated

by depressing the H2TU-R loopback control button or by any of the standard 3-in-5 loop-down commands. The

implemented detection/release loopback algorithm functions properly in the presence of a 10 -3 bit error rate.

Since the FT1 mode is a combination of both the full T1 and the latching loopback modes, all codes are always

active. Therefore, if a loopback is initiated by a latching sequence, it can be looped down by either a latching or

generic loopback and vice versa. All loopback commands are completely symmetric in the FT1 mode.

If the latching sequence shown in Table12 on page26 is interrupted for more than 20 minutes , the detection is

cleared, and the H2TU-C reverts back to its initial state where it searches for the initial sequence 1.

After a successful latching sequence terminates in a latched loopback state, this state remains until the Disable

command is detected, or until the LBTO option of NONE, 20, 60, or 120 minutes has expired, whichever occurs

first.

The unframed AIS pattern that is normally sent toward the network for a CI LOS fault condition must be replaced

by the new patterns listed in Table 13 when the FT1 loopback option is selected.

Table 13. Response of H2TU-C-319 List 4E and H2TU-R to LOS and AIS

H2TU-C Output Pattern

Case FT1

Option H2TU-C

Input Framing Payload FDL H2TU-R

Input H2TU-R

Output Status Screen Front-Panel

Display

1 ENA SF SF 01111110 N/A LOS/AIS 01111110

UNFR RCV

RLOS/RAIS

XMT IDLE

ALRM

RLOS/RAIS

2 ENA ESF ESF 01111110 X(a) LOS/AIS 01111110

UNFR RCV

RLOS/RAIS

XMT IDLE

ALRM

RLOS/RAIS

3 ENA LOS/AIS SF 01111110 N/A LOS/AIS 01111110

UNFR RCV

RLOS/RAIS

XMT IDLE

ALRM

RLOS/RAIS

4 ENA LOS/AIS SF PL X(a) SF/PL AIS RCV LLOS/LAIS ALRM

LLOS/LAIS

5 ENA LOS/AIS ESF PL X(a) ESF/PL AIS RCV LLOS/LAIS ALRM

LLOS/LAIS

(a) “Don’t care” bit

Contents

Main HiGain HDSL2 U SER M L B K M O D E Revision History of This Manual USING THIS MANUAL I NSPECTING S Page TABLE OF CONTENTS Page LIST OF FIGURES LIST OF TABLES O F C A LTPH-UM-1049-02, Issue 2 Front Panel H2TU-C-319 List 4E January 9, 2002 3 FRONT PANEL DCE Status LED DSX-1 access jacks Craft port Table 1. Front-Panel Description Page Page Table 2. Front-Panel Display Messages (Continued) I V Verification without an H2TU-R Remote Unit Verification with an H2TU-R Remote Unit P USING THE MODE AND LBK PUSHBUTTONS Setting Options through MODE and LBK Resetting to Factory Default Values Displaying System Parameter Settings Disabling an Alarm Loopback Modes USING A MAINTENANCE TERMINAL Connecting to a Maintenance Terminal The Logon Screen Figure 3. Logon Screen Table 4. Logon Screen Menus PROVISIONING TASKS Setting Date and Time Setting Circuit ID Numbers Configuring the System Making Changes to Standard and ADC Options LTPH-UM-1049-02, Issue 2 Provisioning H2TU-C-319 List 4E January 9, 2002 17 Figure 7. Config Menu - Standard Options (defaults shown) Figure 8. Config Menu - ADC Options (defaul ts shown) Page Table 6. H2TU-C-319 List 4E ADC Config Menu Options Table 5. H2TU-C-319 List 4E Standard Config Menu Options (Continued) Page Table 6. H2TU-C-319 List 4E ADC Config Menu Options (Contin ued) Page Page Page Table 9. Extended SuperFrame Format Table 10. SuperFrame Format Page Page Provisioning LTPH-UM-1049-02, Issue 2 28 January 9, 2002 H2TU-C-319 List 4E Test Access Figure 9. Metallic Test Access Block Diagram LTPH-UM-1049-02, Issue 2 Provisioning H2TU-C-319 List 4E January 9, 2002 29 MUX Figure 10. MTA Relays DACS Provisioning LTPH-UM-1049-02, Issue 2 30 January 9, 2002 H2TU-C-319 List 4E Figure 12. H2TU-C-319 List 4E Block Diagram Dual DSX-1 Port Option Resetting to Factory Defaults Clearing the History, Alarm, and Event Log Screens MONITORING SYSTEM ACTIVITY AND P USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY Table 14. Monitor Screen Descriptions USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA 38 January 9, 2002 H2TU-C-319 List 4E Performance History at the DS1 Interface Figure 16. H2TU-R DS1 31-Day Performance History Figure 17. H2TU-R DS1 25-Hour Performance History Page 40 January 9, 2002 H2TU-C-319 List 4E Performance History at the HDSL2 Interface Figure 19. H2TU-C HDSL2 31-Day Performance History Figure 20. H2TU-C HDSL2 48-Hour Performance History Page 42 January 9, 2002 H2TU-C-319 List 4E Current Statistics Screens for the DS1 Interface Figure 22. H2TU-R DS1 Current Statistics Figure 23. H2TU-C DS1 Current Statistics LTPH-UM-1049-02, Issue 2 Monitoring System Activity and Performance H2TU-C-319 List 4E January 9, 2002 43 Current Statistics for HDSL2 Interface Figure 24. H2TU-C HDSL2 Current Statistics USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA Figure 26. H2TU-R DS1 Alarm History Screen Table 17. DS1 Alarm Descriptions 46 January 9, 2002 H2TU-C-319 List 4E Alarm History at the HDSL2 Interface Figure27 shows the H2TU-C HDSL2 alarm history and Table 18 describes the alarms. Figure 27. H2TU-C HDSL2 Alarm History Screen Table 17. DS1 Alarm Descriptions (Continued) Screen Alarm Front-Panel Alarm Description Table 18. HDSL2 Alarm Descriptions USING THE SYSTEM EVENT LOG TO TRACK EVENTS Table 19. Event Log Entry Messages List USING THE REPORT MENU Table 20. Report Types T SYSTEM ALARMS Alarm Option for the Digital Loop Carrier Feed Retiring System Alarms Remote LOS and AIS Response Figure 30. H2TU-R LOS and AIS Response Priorities OCT55 TEST PATTERN WITH AMI LINE CODE LOOPBACK OPERATION Generic Loopback Commands Special Loopback Commands SmartJack Loopback Commands M ANUAL L OOPBACK S Setting the Loopback Time-Out Option Activating Manual Loopback Mode ACTIVATING MANUAL METALLIC TEST ACCESS IN-BAND LOOPBACK SESSIONS General Troubleshooting Tips GNLB Test Procedures Testing LTPH-UM-1049-02, Issue 2 60 January 9, 2002 H2TU-C-319 List 4E Figure 32. Loopback Modes DSX-1 GNLB loopback codes. LoopbacksToward Customer CI-Customer Interface A2LB Test Procedures Page Page A3LB and A4LB Test Procedures SmartJack Test Procedure APPENDIX A - SPECIFICATIONS P OWER C M AXIMUM P OWER D M AXIMUM C URRENT D LOOP ATTENUATION, INSERTION LOSS, AND REACH Appendix A - Specifications LTPH-UM-1049-02, Issue 2 68 January 9, 2002 H2TU-C-319 List 4E H2TU-C-319 LIST 4E CARD-EDGE CONNECTOR Figure 33. H2TU-C-319 List 4E Card-Edge Connector Network Management Control Bus Fuse Alarm System Alarm Output Pin CRAFT PORT Terminal Figure 35. RS-232 Craft Port Pinouts H2TU-C-319 Terminal APPENDIX B - FUNCTIONAL OPERATION Figure 36. H2TU-C-319 List 4E Block Diagram Page APPENDIX C - COMPATIBILITY APPENDIX D - PRODUCT SUPPORT TECHNICAL SUPPORT R APPENDIX E - ABBREVIATIONS Page Page CERTIFICATION AND WARRANTY FCC CLASS A COMPLIANCE L IMITED W M S AFETY S TANDARDS C ,-Q6o