Maintenance-Object Repair Procedures
555-233-143
8-1228
Issue 1 May 2002
Call State Audit Test (#257)
If a call is active on the port, 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 terminal adapter 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 terminal adapter, 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 terminal adapter. The ISDN
Specification allows up to 2 minutes for a reply. If a reply is not received within the
2-minute window, a protocol time-out violation is recorded in the error log against
the associated signaling channel (ISDN-PRI signaling link’s port, which is listed in
the Error Log as ISDN-LNK; the Error Type is 1).
PASS
Wait 4 minutes and then check the Error Log for any new errors of type 3073. If
there are none, then both sides of the ISDN connection agree on the service
state; the negotiation succeeded. If there is a new 3073 error, then the
negotiation failed (the far-end terminal adapter twice failed to respond within
the mandatory 2-minute window). This switch will automatically retry
approximately every 15 minutes. If the port was initially in the INS (in-service)
state, it will now be placed in the MTC/FE (maintenance, far-end problem) state
(see the “Service States” section which precedes the PE-BCHL “Hardware
Error Log Entries and Test to Clear Values” table); incoming calls will be
accepted, but no outgoing calls will be originated this port. If an incoming call is
presented, another Service State audit will be immediately performed in an
attempt to bring the PRI endpoint port the proper state.
Table 8-503.
Test #257 Call State Audit Test
Error
Code
Test
Result
Description / Recommendation
1019
ABORT
An audit is already in progress.
1. Wait 2 minutes and try again.
1113
ABORT
The signaling link has failed, so the system cannot send any messages on
behalf of this port.
1. Check the results of Signaling Link State Check test (#255).
Continued on next page
Table 8-502.
Test #256 Service State Audit Test —
Continued
Error
Code
Test
Result
Description / Recommendation
Continued on next page
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...