21259 BSC Fault AutoCure Start

Description

The BSC performs the self-healing when the communication fault exists in the BSC.

Attribute

Alarm ID Alarm Severity Alarm Type
21259 Major Event

Parameters

ID Name Meaning
1 Subrack No.

Number of the subrack where the self-healing board is located

2 Slot No.

Number of the slot where the self-healing board is located

3 OperateType

0=Auto Isolate,1=Manual Isolate,2=Auto Cure Isolate

4 SerialOperateFlg

0=NO,1=YES

5 CheckResultTimeOut

CheckResultTimeOut

6 Alarm Attribute

0=Normal, Alarms period are longer than the Transient Threshold.

1=Transient Count, The times and the period of the alarms whose periods are shorter than the Transient Threshold are summed up. If the sum result is longer than the Alarm Occurrence Period Threshold or Alarm Occurrence Times Threshold, an alarm so called Transient Count Alarm is triggered. Because Transient Count Alarm is based on accumulative result, the recovery of the alarm may occur at least one Summing Cycle later. The Summing Cycle can be query by MML "LST STATSLDWIN".

Impact on the System

  • Switch over: If the standby board is in position, the switchover is performed between the self-healing board and the standby board. If the standby board is out-of-position and the self-healing board is not the GSCU, the self-healing board will be reset. If the standby board is out-of-position and the self-healing board is the GSCU, the switchover fails. The services in the system are not affected. However, the potential risks exist in the system.
  • Reset: The self-healing board is reset.
  • Isolate: The standby board next to the self-healing GSCU is reset and fails to start.
  • De-isolate: The standby board next to the self-healing GSCU starts successfully.

System Actions

None.

Possible Causes

The communication fault exists in the BSC system. Then, the BSC performs the self-healing.

Procedure

  1. Wait for the check of the self-healing result reporting to the LMT alarm console. Ignore the alarms caused by the self-healing actions.


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