DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-26
Fault isolation procedures
2
To isolate fiber link faults use two procedures:
■
‘‘Gather information’’
■
‘‘Test the fiber link hardware’’
Gather information
1. Know which fiber span to isolate by using the link information (status
health) reports from both the Release 9r and the SREPN and the
information in
Table 2-7 on page 2-18
.
2. Enter display alarms and press
Enter
.
3. Type pnc in the
Category
field, then choose
Enter
.
NOTE:
Since the system is in Survive mode, the Release 9r thinks it has lost
its connections to the EPN. Therefore, alarms may be present, even
though the problem has been diagnosed and fixed.
4. Look for any
on-board
alarms other than the EI circuit pack. If there are
any, replace the circuit pack. Do not replace the EI circuit pack unless there
are on-board alarms.
If No,
5. Enter display errors and press
Enter
.
6. Type pnc in the
Category
field, then choose
Enter
.
7. Check for any of the following errors:
8. If you find
one or more
of the above errors, go to Step 10.
Maintenance
Object
Error
Type
FIBER-LK
Any
SNI-BD
513
EXP-INTF
257 769
770
1281
1537
3073
3074
3075
3076
3585
3841
3842