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 switc h or terminal adapter, and
the far-end did not resp ond in the allotted time. Possible c auses include
link failure and congestion or o utage at the far-end. The Aux Data field
contains Layer 3 protocol infor mation used by internal c ounters.
If no other symptoms are not present, no action i s required. If Layer 3
communication is down, there shou ld be indication s in the form of alarms
and errors for link components. Chec k 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 primar y signaling channel c onnection has
been lost for more than 90 second s. If a secondary signaling channel
does not exist or is not in-service, the ass ociated B-channels will b e
placed in the ISDN Maintenance/Far-End state. The B-c hannels will not be
usable for outgoing c alls, although incoming calls will still be acc epted.
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 sequenc e. When the link does recover, the
B-channels will be negotiated back to the In-Service state and their alarms
will be retire d .
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 sec ondary signaling c hannel connection has
been lost for more than 90 seconds. If the p rimary signaling c hannel is not
in-service, B-channels will b e placed in the ISDN Maintenanc e/Far-End
state. The B-channels will not be usable f or outgoing calls, althoug h
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 S equence first. If all tests pass, run the Long T est S equence. Refer to t he appropriate
test description and follow the recommended proc edures.
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