Alarm masking

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Alarm masking means that the NMS does not receive alarms from a specified object or monitor some unimportant NMS alarms. During maintenance, testing, or deployment, you can set alarm masking conditions to mask alarms that do not need concern. For some unimportant NMS alarms, you can set alarm masking on the NMS so that the NMS does not monitor these alarms to improve fault locating efficiency.

Other related questions:
Alarm masking
Alarm masking means that the NMS does not receive alarms from a specified object or monitor some unimportant NMS alarms. During maintenance, testing, or deployment, you can set alarm masking conditions to mask alarms that do not need concern. For some unimportant NMS alarms, you can set alarm masking on the NMS so that the NMS does not monitor these alarms to improve fault locating efficiency.

Method used to cancel alarm masking on the NMS
On the U2000, choose Fault > Settings > Mask Rule from the main menu. On the Mask Rule tab, select the desired masking policy, and deselect the Enable check box or delete the policy.

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