Avaya DEFINITY Server CSI Maintenance Manual page 1323

ISDN-TRK (DS1 ISDN Trunk)
Call State Audit Test (#257)
If a call is active on the trunk, the switches on both sides of the connection should
agree on the ISDN state of the call, as defined in the ISDN Protocol Specification.
This test audits internal call state data by querying the far-end switch as to the
ISDN state of the call. It can be helpful when trying to clear a hung call. If the
internal call state data on the near-end switch is different than that of the far-end
switch, then the call will be torn down.
As with Test #256 (Service State Audit), a PASS simply means that an appropriate
message was composed and sent to the far-end switch. The ISDN Specification
allows up to two minutes for a reply. If a reply is not received within the two minute
window, a protocol time-out violation will be recorded in the error log against the
associated signaling channel (ISDN-PRI Signaling Link Port, which is listed in the
Error Log as ISDN-LNK/ISDN-PLK; the Error Type is 1).
Table 323. TEST #257 Call State Audit Test
Error Test
Code Result
1018 ABORT
1019 ABORT
1113 ABORT
1114 ABORT
1116 ABORT
2100 ABORT
FAIL
PASS
555-233-119
Description/ Recommendation
Maintenance is disable on this trunk.
1. Enable maintenance by entering y in the Maintenance Tests? field
on page 2 of the change trunk-group form.
An audit is already in progress.
1. Wait two minutes and try again.
The signaling link has failed, so the system cannot send any messages on
behalf of this trunk.
1. Check the results of Test #255 (Signaling Link State Check).
The signaling link is in a transitional state.
1. Retry the command at 1-minute intervals a maximum of 5 times.
The trunk is in an out-of-service ISDN service state.
1. A call cannot be present if the trunk is in an ISDN out-of-service state,
so a call state audit would be inappropriate. No action necessary. (Use
the status trunk
Could not allocate the necessary system resources to run this test.
1. Retry the command at 1-minute intervals a maximum of 5 times.
Internal system error
1. Retry the command at 1-minute intervals a maximum of 5 times.
This switch sent a call state auditing message to the far-end switch to verify
the state of the call active on this trunk. If a call state mismatch is found,
then the call will be torn down within two minutes. If no call was active, then
no message was sent.
Continued on next page
Issue 5 October 2002
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