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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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VC3FEUAS

VC3FEUAS

Performance Event Meaning

The VC3FEUAS event indicates the VC-3 far end unavailable second.

Performance Event Attributes

Performance Event ID Performance Event Type

0x59

SDH performance event

Impact on the System

If bit errors occur in the services on a remote NE, identify the causes and rectify the fault immediately. Otherwise, alarms will be generated and the signal transmission quality will be affected.

Possible Causes

The VC3FEUAS event indicates the duration in which the unavailable time (UAT) state lasts.

External causes:

  • The fiber performance degrades and the attenuation is excessive at the opposite station.

  • The fiber connector is dirty or incorrect at the opposite station.
  • The equipment is poorly grounded at the opposite station.
  • There is a severe interference source around the equipment at the opposite station.
  • The working temperature is high or low, and the opposite equipment cannot tolerate such temperature.

Equipment problems:

  • The signal attenuation on the receive side of the line board at the opposite station is excessive, or the transmit circuit at the opposite station is faulty, or the receive circuit at the local station is faulty.

  • The synchronization performance of the clock is poor at the opposite station.
  • The cross-connect unit and the line board poorly match at the opposite station.
  • The fan of the opposite equipment becomes faulty.
  • The board fails or the board performance degrades at the opposite station.

Relevant Alarms

Alarm Name Correlation
LP_REI_VC3 VC-3 path remote error indication
LP_RDI_VC3 VC-3 path remote defect indication

Procedure

  1. See VC3FEES.

Reference

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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