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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
P_AIS

P_AIS

Description

The P_AIS alarm indicates that signals received on the PDH side of the E3/T3 tributary board are all 1.

Attribute

Alarm Severity Alarm Type

Major

Communication alarm

Parameters

None.

Impact on the System

The services at the port where the P_AIS alarm is reported are unavailable.

Possible Causes

Possible causes of this alarm are as follows:

  • The transmission cable is faulty.
  • The interconnected PDH equipment outputs AIS signals.
  • The TU_AIS or TU_LOP alarm is reported on the corresponding path of the tributary board.

Procedure

  1. Check whether the transmission cable is normal.

    If... Then...

    The transmission cable is faulty

    Replace the transmission cable. Then, check whether the alarm is cleared. If the alarm persists, go to the next step.

    The transmission cable is properly functioning

    Go to the next step.

  2. Check whether the interconnected PDH equipment is incorrectly configured or has a hardware fault.

    If... Then...

    The interconnected PDH equipment is incorrectly configured or has a hardware fault

    Correct the configuration of the PDH equipment or rectify the hardware fault. Then, check whether the alarm is cleared. If the alarm persists, go to the next step.

    The interconnected PDH equipment is correctly configured or has no hardware fault

    Go to the next step.

  3. On the U2000, check whether the TU_AIS or TU_LOP alarm is reported on the corresponding path of the tributary board.

    If... Then...
    The TU_AIS or TU_LOP alarm is reported Clear the TU_AIS or TU_LOP alarm. Then, check whether the P_AIS alarm is cleared. If the P_AIS alarm persists, go to the next step.
    The TU_AIS or TU_LOP alarm is not reported Go to the next step.

  4. Reseat the E3/T3 tributary board. Then, check whether the alarm is cleared.

    If the services traveling through the tributary board are not configured with protection, reseating or replacing the tributary board interrupts the services.
    If... Then...

    The alarm persists

    Replace the E3/T3 tributary board.

    The alarm is cleared

    Contact Huawei technical support engineers to handle the alarm.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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