Active reference
When a protection timing reference is provisioned, the active timing reference can be
the working reference or the protection reference. The reference actually being used by
the network element is indicated in the Active Reference field.
Clear WTR
The Clear Wait-To-Restore command (Clear WTR) resets the wait to restore timer
and the signal status will revert to normal.
Global wait to restore time
In case of a failure the system switches to a valid reference. When the failure is no
longer present, the system switches back, after a certain waiting period (the switching
is revertive). This waiting period is called the Global Wait to Restore Time.Itcan
range from 0 minutes to 60 minutes. The signal status will become Wait to Restore.
The Global Wait to Restore Time setting holds for all the timing in the network
element. That is, for the Timing Sources, for the System Timing, and for the Station
Clock Output Timing.
Monitored
The user can enable or disable the option for monitoring a timing source. If a timing
source is monitored, the timing source will forward the Reference Fail and Reference
Unequipped alarms to the management system when applicable.
Monitored can have the values Yes or No.
Protection port/p port
The protection ports that can be assigned to the timing sources:
Timing Sources Possible Timing References
TRIB-1 TP2.1 to TP2.2
TRIB-2 TP2.1 to TP2.2
Protection reference
The Protection Reference indicates the port that is assigned to be the Protection Port.
QL-in
When the quality level is read from the S1-byte from the timing references, it is
reflected in the QL-in parameter. This parameter can have all of the defined quality
level values. See subsection “Timing Quality Levels”.
Timing provisioning
Parameters for provisioning timing sources
....................................................................................................................................................................................................................................
365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
7-25
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