Avaya MCC1 Maintenance Procedures page 169

• After replacing an SNI circuit pack, clear alarms by executing test board UUCSS long
clear for every alarmed EXP-INTF circuit pack. Wait 5 minutes for any SNI-BD or SNI-
PEER alarms to clear. To speed this process use clear firmware counters [a-pnc | b-pnc]
for the PNC that was repaired.
• Exit this procedure.
3 Enter list fiber-link to get the physical location of the fiber link's endpoints. If a DS1 CONV is
administered to the fiber link (DS1 CONV is y), use the display fiber-link command to get the
physical location of the DS1 CONV circuit packs on the fiber link.
4 Execute busyout fiber-link FP, followed by test fiber-link FP long.
If any tests in the sequence fail, proceed with
If every test passes, clear alarms by executing test board UUCSS long clear for every alarmed
EXP-INTF circuit pack. Wait 5 minutes for any SNI-BD, SNI-PEER, FIBER-LK, or DS1C-BD
alarms to clear. You can speed this process with clear firmware counters [a-pnc | b-pnc] for the
PNC that was repaired. You are finished with this procedure.
5 For each of the fiber link's endpoints, follow this flowchart:
Busyout and test board UUCSS long and record every test failure. When looking at test results,
consult the explanations and illustrations of the tests, which appear at the end of this procedure.
Is Board Not Assigned displayed for an EXP-INTF in a PN?
• If yes, test maintenance long to release an EXP-INTF that may be held reset by a PN's
Maintenance circuit pack.
• If No, did EXP-INTF test (#242) fail? If yes, replace the EXP-INTF circuit pack and its
lightwave transceiver (if present), and return to
an on-board loop around if no lightwave transceiver is connected to the EXP-INTF.]
• If No, did SNI test (#757) fail? If yes, replace the SNI circuit pack, and return to
this procedure.
• If No, did SNI test (#756) fail? If yes, replace the SNI circuit pack and its lightwave
transceiver (if present), and return to
• If No, did EXP-INTF test (#240) fail? If yes, replace the EXP-INTF circuit pack, and
return to
• If No, did Test #238 (EXP-INTF) or #989 (SNI) fail? If yes, replace the lightwave
transceivers and their fiber-optic or metallic cable, and return to
component can be further isolated using the
loop-back
Maintenance Procedures
December 2003
Error Type SNI's Slot
2561 15
2817 16
3073 17
3329 18
3585 19
3841 20
(2 of 2)
Step 4.
on page 171.
Step 5.
Step 4. [The EXP-INTF test (#242) runs
Step 4.
Step
Troubleshooting SNI/EI links with manual
Troubleshooting
Fiber link fault isolation
Step 4 of
4. The faulted
169