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OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
7.123 Clock Source WTR Time
Description
The Clock Source WTR Time parameter is used to specify the wait-to-restore (WTR) time
when the Higher Priority Clock Source Reversion Mode parameter is set to Auto-
Revertive. When a clock source is restored to its valid status, the system does not regard it as a
valid source immediately but verifies the validity of the clock source in a specific period of time.
The system regards the clock source as a valid source only if the clock source remains valid
during the specific period of time. This specific period of time is called the WTR time of the
clock source.
Impact on the System
Insufficient WTR time may result in wrong judgments on clock source restoration and clock
status jitters, which may interrupt the service.
Values
Value Range
0-12
Configuration Guidelines
The WRT time is counted in minutes. The shorter the WTR time is, the faster the clock is
recovered, and the higher the average clock quality is. On the other hand, the shorter the WTR
time is, the more likely the clock jitters are caused due to unstable clock signals. Therefore, do
not set the WTR time to 0 in actual application.
Relationship with Other Parameters
The setting of the WTR time is valid only when the Higher Priority Clock Source Reversion
Mode parameter is set to Auto-Revertive.
Related Information
None.
7.124 Lock Status
Description
The Lock Status parameter indicates the lock status of a clock source in the priority table.
Impact on the System
The system running is not affected.
Issue 02 (2011-06-30)
Default Value
5
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7 List of Parameters
7-101
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