DS1-BD (DS1 Interface Circuit Pack)
Issue 1 May 2002
8-607
555-233-143
1311
FAIL
The Integrated CSU (I-CSU) Module Equipment Loopback (ELB) test (#1210)
failed. This test is executedduring ICSU
/T1 sync splitter
power-up/reset (the
TN767E board is physically inserted and the CSU module
/T1 sync splitter
is
already installed) or when the 120A CSU module
/T1 sync splitter
is plugged
on to an already initialized DS1 board. The ELB test is also executed as part of
the command test ds1-loop UUCSS ds1/csu-loopback-tests.
1. Execute test ds1-loop UUCSS ds1/csu-loopback-tests.
2. If the ELB test continues to fail, then either the TN767E board, the CSU
module
/T1 sync splitter
, or the I/O cable between the backplane and the
CSU module
/T1 sync splitter
(or any combination thereof) has failed.
Attempt to isolate the problem to one of these areas. Begin by replacing
the CSU module
/T1 sync splitter
and running the test ds1-loop UUCSS
ds1/csu-loopback-tests command again.
3. If the ELB test continues to fail, then replace the TN767E board and run
test ds1-loop UUCSS ds1/csu-loopback-tests again.
4. If the ELB test continues to fail, the problem could be in the I/O cable
between the backplane and the CSU module
/T1 sync splitter
.
1312
FAIL
The Integrated CSU (I-CSU) Module Repeater Loopback (RLB) test (#1211)
failed. This test is executed during ICSU
/T1 sync splitter
power-up/reset (the
TN767E board is physically inserted and the CSU module
/T1 sync splitter
is
already installed), or when the 120A1 CSU module
/T1 sync splitter
is plugged
on to an already initialized DS1 board. The RLB test is also executed as part of
the command test ds1-loop UUCSS ds1/csu-loopback-tests.
1. Execute test ds1-loop UUCSS ds1/csu-loopback-tests.
2. If the RLB test continues to fail, then replace the CSU module
/T1 sync
splitter
.
3. Run this test again.
1313
FAIL
The TN767E circuit pack could not deactivate a CPE loop-back jack loop back.
1. Execute test ds1-loop UUCSS end-loopback/span-test.
2. If the attempt to deactivate the CPE loop-back jack is not successful, check
the cabling and investigate the problem at the CPE loop-back jack.
3. Run the test again.
1314
FAIL
The TN767E circuit pack could not deactivate a far-end CSU loop loop-back.
1. Execute test ds1-loop UUCSS end-loopback/span-test.
Table 8-245.
Test #138 Loss of Signal Alarm Inquiry Test —
Continued
Error
Code
Test
Result
Description / Recommendation
Continued on next page
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...