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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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SSM_LOS

SSM_LOS

Description

This alarm indicates that the SSM quality information fails to be received. In SSM mode, this alarm is reported when a reference source port configured in the priority table fails to obtain valid SSM quality information within 5 seconds.

Attribute

Alarm Severity Alarm Type

Minor

Equipment alarm

Parameters

None

Impact on the System

This alarm triggers switching of the reference clock source.

Possible Causes

  • The upstream NE sends invalid SSM quality information.
  • In SSM mode, the NE fails to obtain valid SSM quality information.

Procedure

  1. On the NMS, check whether the SSM quality information is properly sent by the upstream NE. If it is properly sent, check whether the upstream and local NEs are properly interconnected.
  2. The alarm is cleared when valid SSM quality information is received.

Related Information

None

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Updated: 2019-01-21

Document ID: EDOC1100020975

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