Avaya Definity SI Maintenance Manual page 1010

Maintenance Object Repair Procedures
Table 10-84. TEST #647 Layer 2 Status Query Test — Continued
Error
Code Result
1 FAIL
3 FAIL
PASS
Remote Layer 3 Query (#1291)
This test queries the far-end switch or terminal adapter to determine if the
signaling connection is functioning properly at Layer 3. It selects a B-channel in
the in-service or maintenance service state and sends an ISDN Layer 3 SERVice
message, which requires a response from the far end (similar to performing Test
#256 on an ISDN trunk). The test is not performed if there are no B-channels in an
appropriate ISDN service state (for example, when none are administered or they
are all out of service).
NOTE:
The service state can be displayed by using the status trunk <trunk
group/trunk member> or status pri-endpoint command.
10-224 Issue 4 May 2002
Test
Layer 2 of the signaling channel is down
1. Examine the results of the Signaling Test (#636) and follow
recommendations provided there.
2. If Test #636 (Primary Signaling Link Hardware Check)
passes, the Layer 2 Query test may still fail if the Signaling
Channel at the far end has not been administered correctly
or if the Signaling Channel has been busied out.
3. Verify that the Signaling Channel (D-channel) at the far end
has been administered correctly.
4. Verify that the ATM-DCH port used for the D-channel has not
been busied out at the far end.
The D-Channel is down.
1. Examine the results of the Primary Signaling Link Hardware
Check (#636) and follow recommendations provided there.
2. If Test #636 (Primary Signaling Link Hardware Check)
passes, the Layer 2 Query test may still fail if the Signaling
Channel at the far end has not been administered correctly
or if the Signaling Channel has been busied out.
3. Verify that the Signaling Channel (D-channel) at the far end
has been administered correctly.
4. Verify that the ATM-DCH port used for the Primary and
Secondary D-channels has not been busied out at the far
end.
The Primary Signaling Channel is up.
Description/Recommendation
Continued on next page
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