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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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The R_S_ERR alarm indicates that the received signal has errors.


Alarm Severity Alarm Type


Communication alarm


Name Meaning

Parameter 1

Indicates the optical interface number (the value is always 0x01).

Parameter 2, Parameter 3

Indicate the path number.

Impact on the System

When the R_S_ERR alarm occurs, the services are interrupted.

Possible Causes

Possible causes of the R_S_ERR alarm are as follows:

  • The frequency offset of the input signal is large.
  • The board is faulty.


  1. Check whether the tributary board supports the type of the input signal.
    If... Then...

    The tributary board does not support the type of the input signal

    Change the type of the output signal of the opposite station.

    The tributary board supports the type of the input signal

    Go to the next step.

  2. Test the frequency offset of the input signal.
    If... Then...

    The frequency offset is large

    Troubleshoot the opposite station.

    The frequency offset meets the requirement

    Go to the next step.

  3. Replace the board that reports the alarm.

Related Information


Updated: 2019-01-21

Document ID: EDOC1100020975

Views: 75042

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