20253 Slip Frame over the Tributary

Description

The number of slip frames within five minutes exceeds the alarm threshold.

Attribute

Alarm ID Alarm Severity Alarm Type
20253 Minor Fault

Parameters

ID Name Meaning
1 Subrack No.

Subrack No.

2 Slot No.

Slot No.

3 Cpu No.

CPU No.

4 Tributary Unit No.

0 - 62(for E1 mode), 0 - 83(for T1 mode).

5 Number of Slip Frames

The number of slip frames

6 Site No.

The IDs of all sites whose OMLs are on the faulty E1/T1. If BTS are cascade connected,a maximum of 4 sites are shown.Only Abis E1/T1 alarm has this parameter.

7 Site Name

The Names of all sites whose OMLs are on the faulty E1/T1. If BTS are cascade connected,a maximum of 4 sites are shown.Only Abis E1/T1 alarm has this parameter.

8 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

The service over this tributary might be affected.

System Actions

None.

Possible Causes

The clock between two ends of this tributary is not synchronized.

Procedure

  1. Synchronize the clock between two ends of this tributary through the local maintenance terminal (LMT), and then check whether the alarm is cleared.

    Y => The alarm is cleared. The alarm handling is complete.

    N => The alarm persists. Please contact Huawei Customer Service Center.


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