Avaya S8700 Maintenance Manual page 614

Maintenance Object Repair Procedure
Echo Canceller Test (#1420)
This test is destructive.
NOTE:
This test is executed only for TN464GP/TN2464BP circuit packs that have
been administered on the DS1 circuit pack form to provide echo
cancellation. The TN464GP/TN2464BP must be busied out before this
demand test is run.
This test is for the TN464GP and TN2464BP circuit packs. The test originates
from a manually initiated test board long demand test of a TN464GP/TN2464BP
circuit pack. The test instructs firmware to test the echo cancellation circuity. The
TN464GP/TN2464BP firmware tests echo cancellation on a subset of channels.
If any channel fails twice or if any two channels fail once, the test fails, and echo
cancellation is bypassed on every channel of the board. Otherwise, the test
passes, and echo cancellation is configured to the administered parameters.
Table 8-544. Test #1420 Echo Canceller Test
Error Test
Code Result Description / Recommendation
1015 ABORT The board is not busied out. This test will abort if the UDS1 circuit pack under
test is in service.
2000 ABORT Response to the test was not received within the allowable time period. This
may be due to hyperactivity. Error Type 1538 in the error log indicates
hyperactivity. The hyperactive circuit pack is out of service, and one or more of
the following symptoms may be exhibited.
1. The UDS1-BD tests (such as Tests #138 and #139) are aborting with error
2. The tests run on the ports of this circuit pack are returning a no-board
3. A busyout or a release command has no effect on the test results.
4. A list config command shows that the circuit pack and its ports are
When hyperactivity occurs, the circuit pack is isolated from the system, and all
of its trunks are placed into the out-of-service state. The system will try to
restore the circuit pack within 15 minutes. When no faults are detected for 15
minutes, the UDS1 interface circuit pack is restored to normal operation. Every
trunk for the UDS1 interface circuit pack is then returned to the in-service state.
Hyperactivity is often caused by the associated facility. In such a case, faults
(such as slips, misframes, or blue alarms) would be entered in the error log. In
addition, many hardware errors would be logged against the associated trunk
circuits. If the facility is OK and the error occurs again after 15 minutes, replace
the circuit pack.
8-1310 Issue 1 May 2002
code 2000.
result.
properly installed.
Continued on next page
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