UDS1-BD (UDS1 Interface Circuit Pack)
Issue 4 May 2002
10-1939 555-233-123
1400,
1401
FAIL The Echo Cancellation Test has failed:
■ Error 1400 - Echo canceller function failed. The Echo
Canceller Function Test, which is executed by firmware,
failed.
■ Error 1401 - Echo canceller memory failed. The Echo
Canceller Memory Test, which is executed by firmware,
failed.
Echo Cancellation is no longer being supplied by the board.
Clear the alarm using the following commands: busyout board
UUCSS, test board UUCSS long, release board UUCSS. If the
test still fails, replace the circuit pack.
NOTE:
When this test fails, echo cancellation will be bypassed on
all channels on the board. The circuit pack can still be
used for a T1/E1 line interface without echo cancellation.
This capability provides limited service for the customer
until the circuit pack can be changed out.
PASS The Echo Cancellation feature is functioning properly.
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 10-691. TEST #1420 Echo Canceller Test — Continued
Error
Code
Te s t
Result Description/Recommendation
Continued on next page
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