Avaya S8700 Maintenance Manual page 354

Maintenance Object Repair Procedure
3. For duplicated Tone-Clock circuit packs in the master port network,
4. Investigate any other SYNC errors.
f. Noise on the DS1 line can cause transient alarms on synchronization.
Therefore, when a sync problem occurs on error types 1, 257, or 513, a
WARNING alarm is first raised for 15 to 20 minutes before the alarm is
upgraded to a MINOR or MAJOR alarm.
System Technician-Demanded Tests:
Descriptions and Error Codes
Always investigate tests in the order presented in the table below when inspecting
errors in the system.
Order of Investigation
Test Synchronization test (#417)
1. D = Destructive, ND = Non-destructive
Test Synchronization Test (#417)
This test updates every Synchronization Maintenance component with the correct
information about its role in providing a system's synchronization. Specifically,
this test updates every:
IPSI circuit pack's Tone-Clock circuit
DS1 Interface and UDS1 Interface circuit pack
in the system. The test either passes or aborts.
8-1050 Issue 1 May 2002
enter set tone-clock UUC command to switch the Tone-Clocks.
For unduplicated Tone-Clock circuit packs in the master port
network of a system, replace the primary and secondary (if
assigned) DS1 Interface circuit packs.
Short Test Long Test
Sequence Sequence
X
1
D/ND
X ND
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