Service State Audit (#256) - Avaya G250 Maintenance Manual

Service State Audit (#256)

As noted in the general description for DS1 ISDN Trunk, these trunks may be in one of several
service states. This test performs a Service State Audit with the far-end switch.
For interfaces using country protocol 1 (including the US) the Service State Audit executes in all
trunk service states. A message is sent to the far-end switch to ensure that both sides agree on
the service state. A PASS for this test simply means that the message has been successfully
sent. Two minutes are allowed for a reply. If no reply is received within that 2 minute window, the
message is sent out again. If that attempt fails, an Error Type 3073 will be logged and the switch
will attempt another Service State Audit every 15 minutes. If the trunk was initially in-service, it
is placed in the maintenance/far-end state. No outgoing calls will be placed over this trunk, but
incoming calls will be accepted. If an incoming call is presented with the trunk in such a state, a
Service State Audit is immediately be attempted (the switch does not wait for the 15-minute
cycle, but tries to recover immediately).
For interfaces not using country protocol 1, the Service State Audit executes only if the trunk is
in the out-of-service/far-end state. A message is sent to the far-end switch to attempt to bring
the trunk back into the in-service state. A PASS for this test simply means that the message has
been successfully sent. Two minutes are allowed for a reply. If no reply is received within that
two minute window, the message is sent out again. If again no response is received within two
minutes, the trunk remains in the out-of-service/far-end state. The switch will attempt another
Service State Audit after an hour has passed.
To investigate the service state of the DS1 ISDN Trunk, use the status trunk group#/member#
command.
Table 92: TEST #256 Service State Audit Test
Error Test
Code Result
1000 ABORT
1018 ABORT
1113 ABORT
Description/ Recommendation
Resources required to run this test were not available. The port may be
on a valid call or initializing. Use status station or status trunk to
determine when the trunk is available for testing. Check the results of
Test #255.
Maintenance is disabled on this trunk.
Enable maintenance by entering "y" in the "Maintenance Tests?" field on
page 2 of the change trunk-group form.
The signaling link has failed, so the system cannot send any messages
on behalf of this trunk.
Check the results of Test #255 and consult procedures for ISDN-SGR
(ISDN-PRI Signaling Group) in this chapter.
ISDN-TRK (DS1 ISDN Trunk)
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