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SYNC (Port-Network Synchronization)
Issue 1 June 2005 2151
Figure 126: Synchronization Troubleshooting, Fig. 2 of 5
Examine the
Slips on any DS1
facilities?
No
Yes
Yes
No
Yes
To Fig 4
From
Fig 1
4
Slips on IPSI or DS1-C or
Tone-Clock, EIs, or SNIs
Done
synchronization plan
Problem is internal to
for the network.
D
A
No
22
Use the list sync
command
E
?
There is an administration
discrepancy. This system is
administered as the timing
master but it should not be
because there are DS1 spans
with more accurate clocks.
This system is administered and
is acting as the timing master.
This is by intent so the slipping
facilities must be tie trunks.
Does the
administration of this
system agree with the
Network synchronization
plan? Make sure that
To Fig 3
there is only one
master clock source.
the switch