DS1-BD (DS1 Interface Circuit Pack)
Issue 1 May 2002
8-607555-233-143
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
Tes t
Result Description / Recommendation
Continued on next page