Avaya 03-300430 User Manual

1310

FAIL

The DS1 Board Loopback (BLB) demand test (#1209) failed.

1. Repeat the test using test ds1-loop location ds1/

csu-loopback-tests.

2. If the BLB test continues to fail, then replace the TN767E circuit pack.

3. Run this test again.

1311

FAIL

The Integrated CSU (I-CSU) Module Equipment Loopback (ELB) test 
(#1210) 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 120A CSU 
module/T1 sync splitter is plugged on to an already initialized DS1 board. 
The ELB test is also executed as part of   test ds1-loop location 
ds1/csu-loopback-tests.

1. Execute test ds1-loop location ds1/csu-loopback-tests.

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.

2. Replace the CSU module/T1 sync splitter and run test ds1-loop 

location ds1/csu-loopback-tests.

3. If the ELB test continues to fail, then replace the TN767E board and 

run test ds1-loop location 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.

 4 of 7