Avaya S8700 Maintenance Manual page 344

Maintenance Object Repair Procedure
B
Slips on
DS1 reference
facilities?
4
No
Are there
many facilities
with excessive slips?
Few
7
Check the overall
timing network to
verify the source is
traceable back to the
same source
(for example, Hillsboro, Mo).
7
Use the facility fault
sectionalization technique
section with slip counts as
the pass/fail indication to
isolate the trouble.
Figure 8-42. Synchronization Troubleshooting, Fig. 3 of 4
8-1040 Issue 1 May 2002
Is there a
Yes
loss-of-signal or
network alarm?
5 5
No
Replace circuit
6
packs:
– IPSI/Tone-Clock in
the PN
– DS1 in PN
Problem is in PN,
Many
IPSI's Tone-Clock
or DS1s.
Yes
Fix DS1-BD and
UDS1-BD alarms.
5
Escalate, if the
problem is not fixed.
Escalate
555-233-142