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ISDN-TRK (DS1 ISDN Trunk)
Issue 1 June 2005 1463
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 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
2-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, enter the status trunk grp#/mem#
command.
Table 528: Test #256 Service State Audit Test
Error
Code
Test
Result
Description / Recommendation
1000 ABRT 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.
1018 ABRT Maintenance is disabled on this trunk.
1. Enable maintenance by entering y in the Maintenance Tests field
on the change trunk-group form.
1113 ABRT The signaling link has failed, so the system cannot send any messages on
behalf of this trunk.
1. Check the results of Test #255 and consult procedures for ISDN-SGR
(ISDN-PRI Signaling Group) on page 1429.
1114 ABRT The signaling link is in a transitional state.
1. Retry the command at 1-minute intervals up to 5 times.
1116 ABRT The trunk is not in the out-of-service/far-end state that is required to run this
test on systems using a country protocol other than 1.
1117 ABRT A service state audit message is outstanding.
1. Wait 2 minutes and then try again.
2100 ABRT Could not allocate the necessary system resources to run this test.
1. Retry the command at 1-minute intervals up to 5 times.
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