Avaya S8700 Maintenance Manual page 1700

For multi-connect configurations

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Table of Contents

Maintenance-Object Repair Procedures

Table 8-386. ISDN-PRI Signaling Group Error Log Entries — Continued

Run the short test sequence first. If every test passes, run the long test sequence. Refer to each appropriate

test's description, and follow its recommended procedures.

a. This switch sent a message to the far-end switch or terminal adapter, and

the far end did not respond in the allotted time. Possible causes include

link failure and congestion or outage at the far end. The Aux Data field

contains layer-3 protocol information used by internal counters.

If no other symptoms are present, no action is required. If layer-3

communication is down, there should be indications in the form of alarms

and errors for link components. Check for other errors against ISDN-SGR,

ISDN-TRK, and other hardware components on the link.

There is no test to clear these errors. The error counter is decremented by

1 every 15 minutes.

b. This error indicates that the primary signaling channel connection has been

lost for more than 90 seconds. If a secondary signaling channel does not

exist or is not in service, the associated B channels will be placed in the

ISDN Maintenance/Far-End state. The B channels will not be usable for

outgoing calls, although incoming calls will still be accepted. The switch

will automatically attempt to recover the signaling link. Pay particular

attention to the results of Test #636 (Primary Signaling Link Hardware

Check) in the test sequence. When the link does recover, the B channels

will be negotiated back to the In-Service state and their alarms will be

When this error occurs, the state of the Signaling Group is changed to out

of service (verify using the status sig-group command).

Issue 1 May 2002

Associated Test

Test to Clear Value

Continued on next page

Troubleshooting