Avaya 03-300430 User Manual

If the MM710 firmware detects a serious echo canceller hardware error, it notifies maintenance 
software. When the maintenance subsystem receives notification of the echo cancellation error, 
it executes this Loss Of Signal Alarm Inquiry test.
This test, in addition to querying for a loss of signal condition and CSU errors, also queries 
MM710 to confirm the echo canceller error. A minor alarm is raised if the error is confirmed. The 
trunks of the board remain in-service since the board is still functional except for the echo 
cancellation capability.
If a loss of signal condition coexists with CSU and/or echo canceller errors, the loss of signal 
condition takes priority, and the board and all trunks on the board are put in the out-of-service 
state. Errors are logged, however, for each error type.
When the maintenance subsystem receives notification that the echo canceller hardware error 
condition no longer exists, the maintenance subsystem restores the board and all trunks to their 
previous service state, if the alarm can be cleared (no other CSU errors or loss of signal 
conditions exist).

Note:

The DSU functionality is not available in this release of Communication Manager.

 

ABRT

Internal system error

1. Retry the command at 1-minute intervals for a maximum of 5 times.

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