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Communication Manager Maintenance-Object Repair Procedures
996 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
Loss of Signal Alarm Inquiry Test (#138)
This test verifies the synchronization status and continuity of the DS1 link. The Loss of Signal
alarm indicates that the DS1 Interface circuit pack is unable to derive the synchronization clock
from the DS1 facility. When the DS1 Interface circuit pack detects a Loss of Signal alarm, it
stops providing the synchronization clock for the system if it is administered as a timing source
and transmits a Yellow alarm to the remote DS1 endpoint.
When the Loss of Signal alarm is confirmed, the maintenance software places all trunks or ports
of the DS1 Interface circuit pack into the out-of-service state. The inquiry test will run every 10
minutes until the loss of signal has been restored. The DS1 Interface circuit pack raises a Loss
of Signal alarm after the signal has been lost for about 1second. It will not retire the alarm until
the signal has returned for about 10 seconds.
PASS Every administered trunk of DS1 Interface circuit pack passed the Internal
Looparound test. The bit pattern consistency test executed successfully
over the path that covers a DS1 port, cable, and the external NCTE device.
0
NO
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. Verify that the board’s translations are correct. Use add ds1
location to administer the DS1 interface if it is not already
administered.
2. If board was already administered correctly, check the error log to
determine whether the board is hyperactive. If so, the board was shut
down. Reseating the board will re-initialize it.
3. If the board was found to be correctly inserted in step 1, enter
busyout board
4. Enter reset board
5. Enter release board
6. Enter test board long
This should re-establish the linkage between the internal ID and the
port.
Table 343: Test #135 Internal Loop-Around Test (continued)
Error
Code
Test
Result
Description / Recommendation
3 of 3