Maintenance Object Repair Procedures
555-233-123
10-1906 Issue 4 May 2002
CSU Equipment Loopback Test (#1210)
This test is destructive.
The CSU Equipment Loopback (ELB) Test causes a loopback at the near-edge of
the local Avaya 120A1 CSU Module or the 401A T1 Sync Splitter and tests the
connection from the DS1 board to the CSU Module/T1 Sync Splitter (DS1 board
edge interconnecting cable, and CSU Module/T1 Sync Splitter edge). This test is
only performed if the Avaya 120A1 CSU Module or the 401A T1 Sync Splitter is
2100 ABORT Could not allocate the necessary system resources to run this
test.
1. Retry the command at 1-minute intervals for a maximum of 5
times.
FAIL UDS1 Interface circuit pack failed the DS1 Board Loopback Test.
1. Retry the test ds1-loop UUCSS ds1/csu-loopback-tests
command.
2. If the BLB test continues to fail, then replace the UDS1 circuit
pack.
PASS The BLB test executed successfully. The test pattern was
transmitted and received successfully up to the DS1 board edge.
0NO
BOARD
The test could not relate the internal ID to the port (no board).
This could be due to incorrect translations, no board is inserted,
an incorrect board is inserted, or an insane board is inserted.
1. Ensure that the board translations are correct. Execute the
add ds1 UUCSS command to administer the UDS1 interface
if it is not already administered.
2. If the board was already administered correctly, check the
error log to determine whether the board is hyperactive. If
this is the case, the board is shut down. Reseating the board
will re-initialize the board.
3. If the board was found to be correctly inserted in step 1, then
issue the busyout board command.
4. Issue the reset board command.
5. Issue the release busy board command.
6. Issue the test board long command.
This should re-establish the linkage between the internal ID and
the port.
Table 10-682. TEST #1209 DS1 Board Loopback Test — Continued
Error
Code
Tes t
Result Description/Recommendation
Continued on next page
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