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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).
C3794_AIS

C3794_AIS

Description

The C3794_AIS alarm indicates that C37.94 services are faulty.

Attribute

LS
Alarm SeverityAlarm Type

Minor

Communication alarm

Parameters

None.

Impact on the System

After the C3794_AIS alarm is generated, services are interrupted.

Possible Causes

Possible causes of this alarm are as follows:

  • Higher-level alarms, such as T_ALOS and DDN_LFA, occur in the system.
  • The cross-connect and timing board at the opposite station is faulty.
  • The transmit device of the opposite station is faulty.
  • The receive device of the local station is faulty.

Procedure

  1. Check whether the T_ALOS or DDN_LFA alarm is reported on the board at the local station.

    If... Then...
    The T_ALOS or DDN_LFA alarm is reported Refer to the corresponding section in this document to clear the T_ALOS, DDN_LFA. Then, check whether the C3794_AIS alarm is cleared. If the C3794_AIS alarm persists, go to the next step.
    No T_ALOS or DDN_LFA alarm is reported Go to the next step.

  2. Replace the system control, cross-connect, and timing board at the opposite end and check whether the alarm is cleared.

    If... Then...

    The alarm persists

    Go to the next step.

    The alarm is cleared

    No further action is required.

  3. Perform a cold reset by using the NMS or directly reseat the transmit board at the opposite end, and check whether the alarm is cleared.

    If... Then...

    The alarm persists

    Replace the optical module or board. Then, check whether the C3794_AIS alarm is cleared. If the C3794_AIS alarm persists, go to the next step.

    The alarm is cleared

    No further action is required.

  4. Perform a cold reset by using the NMS or directly reseat the receive board at the local end, and check whether the alarm is cleared.

    If... Then...

    The alarm persists

    Replace the optical module or board. Then, check whether the C3794_AIS alarm is cleared. If the C3794_AIS alarm persists, go to the next step.

    The alarm is cleared

    No further action is required.

  5. If the alarm persists, contact Huawei technical support engineers to handle the alarm.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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