Avaya DEFINITY SERIES, Installation And Maintenance Manual, Page: 83 / 101

DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-29 Fault isolation procedures
2
5. If
No
, Did SNI Test #757 fail?
a. If
Yes
, replace the SNI circuit pack and go back to Step 12 in the
‘‘Gather information’’ procedure above.
6. If
No
, Did SNI Test #756 fail?
a. If
Yes
, replace the SNI circuit pack and the lightwave transceiver (if
present) and go back to Step 12 in the ‘‘Gather information’’
procedure above.
7. If
No
, Did EXP-INTF Test #240 fail?
a. If
Yes
, replace the EI circuit pack and go back to Step 12 in the
‘‘Gather information’’ procedure above.
8. If
No
, Did Test #238 (EXP-INTF) or Test #989 (SNI) fail?
a. If
Yes
, replace the lightwave transceivers and fiber-optic cable and
go back to Step 12 in the ‘‘Gather information’’ procedure above.
b. The faulted component can be further isolated by using information
in the ‘‘Loopback tests’’ section later in this chapter.
c. If a fiber out of frame condition exists and lightwave transceivers are
used, check that both lightwave transceivers are of the same type,
(9823A or 9823B). If they are not both the same, replace one of the
lightwave transceivers so that they match. 9823A is used for
distances up to 4900 feet (1493 m) and 9823B is used for distances
up to 25,000 feet (7620 m).
9. If No, Is a DS1 CONV administered on the fiber-link?
a. If
No
and the problem is still present, follow normal escalation
procedures.
b. If
Yes
, is there an SNI-BD 513 alarmed error (display errors for
category pnc)? If yes, replace cabling between the SNI circuit pack
and the DS1C circuit pack.
c. If the alarm persists, first attempt the manual loopback procedure
below, then replace the DS1C and the SNI circuit packs and go back
to Step 12 in the
‘‘Gather information’’ procedure above.
10. If
No
, if the connected circuit pack is an EXP-INTF, did Test #238 fail?
a. If
Yes
, replace cabling between the EXP-INTF circuit pack and the
DS1C circuit pack. If Test #238 continues to fail, replace the DS1C
and the EI circuit packs and go back to Step 12 in the
‘‘Gather
information’’ procedure above.
11. If
No
, busyout the circuit pack (busyout board UUCSS).
12. Test the circuit pack (test board UUCSS long) for both DS1C circuit packs
and note all test failures and aborts.
NOTE:
Test #790 fails with Error Code 1 when in Survive mode.