Dear friend!
The NMS software supports alarm suppression for the two types of devices,
You can choose either of the following:
Suppressing NE Alarms
You can suppress some NE-level alarms of the specified NE so that the U2000 does not monitor these alarms. In this way, you can focus on important alarms. If you suppress a certain alarm of a specified NE, the alarm is not reported.
Suppressing Alarms of a Board or Port
To suppress alarms of a specified board or port, you can directly perform the relevant operations to the board in the NE Explorer. If you suppress a certain alarm of a specified board or a port, the alarm is not reported to the NE or to the U2000. You can suppress the unimportant alarms.
For example,Suppressing Alarms of a Board or Port:

Thanks!