Clear "holdover" conditions/alarms

Procedure 5-37: Clear "holdover" conditions/alarms

Overview

This procedure is used to clear the following conditions/alarms:

excessive holdover
holdover mode active.

Before you begin

Prior to performing this procedure:

Refer to Before you begin and Required equipment in this chapter.
Refer to Electrostatic discharge in Chapter 1, Safety.

Steps

Complete the following steps to clear an holdover-related conditions/alarms.

From the WaveStar^® CIT System View, click the Alarm List button to obtain the alarm list.

Important!

Other alarms/conditions may affect network element synchronization. These alarms/conditions may cause the network element to operate in the synchronization holdover mode.

Are there other synchronization-related alarms/conditions or inc. OCN alarms/conditions present?

If...	Then...
Yes	Proceed to the appropriate procedure to clear each alarm/condition in order of severity. Then continue with the next step.
No	Proceed to Step 5.

From the System View, click the Alarm List button and click Refresh.

Is the holdover-related condition/alarm still present?

If...	Then...
Yes	Continue with the next step.
No	STOP! End of Procedure.

Important!

The system supports provisionable revertive or nonrevertive synchronization mode switching. If provisioned for nonrevertive mode switching, the system must be manually switched from holdover mode to the provisioned timing mode (external timing or line timing) after a timing reference failure clears.

Select Fault → Timing/Sync Protection Switch → Clock Mode Switch, select Normal, and click OK to manually switch back to the provisioned timing mode.

End of steps