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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).
E1_LOC

E1_LOC

Description

The E1_LOC alarm indicates that a tributary board fails to extract the clock from an E1 signal.

Attribute

Alarm Severity Alarm Type

Major

Equipment alarm

Parameters

None.

Impact on the System

Services are not affected.

Possible Causes

Possible causes of the E1LOC alarm are as follows:

  • The opposite NE is faulty.
  • The cable wiring sequence is incorrect.
  • The receive unit of the tributary board on the local NE is faulty.
  • The input E1 signal has an abnormal waveform.

Procedure

  1. Rectify the fault on the opposite NE. Check whether the E1LOC alarm is cleared.
  2. Redo the cable.
  3. If the alarm persists, replace the board where the line unit is located.
  4. If the alarm persists, check whether any external interference causes the abnormal waveform of the E1 signal.
    If... Then...

    There is the external interference

    Contact Huawei technical support engineers.

    There is no external interference

    No further action is required.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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