DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-944ISDN-SGR (ISDN-PRI Signaling Group)
9
Notes:
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 not 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 out 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 retired.
When this error occurs, the state of the Signaling Group is changed to
out-of-service (verify using the status sig-group command).
c. This error indicates that the secondary signaling channel connection has
been lost for more than 90 seconds. If the primary signaling channel is not
in-service, 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
3585 (g) Port
number
None
3840 to
3928(h)
Port
number
None
1. Run the Short Test Sequence first. If all tests pass, run the Long Test Sequence. Refer to the appropriate
test description and follow the recommended procedures.
Table 9-361. ISDN-PRI Signaling Group Error Log Entries — Continued
Error
Type
Aux
Data Associated Test
Alarm
Level
On/Off
Board Test to Clear Value
Continued on next page
