Maintenance-Object Repair Procedures
555-233-143
8-1516 Issue 1 May 2002
Figure 8-89. Synchronization Troubleshooting, Fig. 3 of 6
5
Slips
Reference
Facilities?
Is there a
loss-of-signal or
network alarm?
Fix DS1-BD and
UDS1-BD alarms.
YesYes
No No
To Fig 5
Problem in switch
Many
Are there
many facilities
with excessive slips?
Few
7
Replace circuit
packs:
– IPSI/Tone-Clock in
the timing master PN
– DS1intimingmaster
PN
8
Check the overall
timing network to
verify the source is
traceable back to the
same source
(for example, Hillsboro, Mo).
Use the facility fault
sectionalization technique
section with slip counts as
the pass/fail indication to
isolate the trouble.
Escalate, if the
problem is not fixed.
8
6
B
D
6
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