ALM-4612 Broken LAPD Link Alarm

Description

The link setup fails or the link is disconnected between the BTS and the BSC.

Attribute

Alarm ID Alarm Severity Alarm Type
4612 Major Fault

Parameters

ID Name Meaning
1 Site No.

Number of the site where the faulty board or module is located

Value range: 0-2047

2 Board Type

Number of the type which the faulty board belongs to.

135:MFU

3 Board No.

Number of the fault board

0:MFU 0

1:MFU 1

4 PassNo

Number of the passage where the faulty board is located.

5 SubLink No.

Alarm sub-category number

255:None

6 Cell Index

Index of the cell where the board or module is located

0-2047: Cell index of the faulty cell in the data configuration

65535: None

7 Site Type

Type of the site where the faulty board is located.

17:DBS3900 GSM;

18:BTS3900 GSM;

19:BTS3900A GSM;

20:DBS3036;

21:BTS3036;

22:BTS3036A;

8 RackNo

Number of the rack where the faulty board is located.

9 BoxNo

Number of the subrack where the faulty board is located.

10 SlotNo

Number of the slot where the faulty board is located.

11 Site Name

Site Name

12 Alarm Attribute

Alarm Character

0:Normal

1:Transient Count

Impact on the System

All the services carried on the current-level BTSs are disrupted.

System Actions

None.

Possible Causes

  • The transmission link between the BSC and the BTS is abnormal.
  • The data configuration is improper.
  • The BTS detection fails.

Procedure

  1. Check the data configuration.

    Check the consistency between the bar code of the Abis-interface board on the BSC and the bar code on the backplane of the BTS. Ensure the consistency. Check whether the alarm is cleared.

    Y => The alarm is cleared. No further action is required.

    N => The alarm is not cleared. Go to procedure 2.

  2. Check the transmission link and intermediate network devices. Ensure that the transmission link and intermediate network devices are normal. Check whether the alarm is cleared.

    Y => The alarm is cleared. No further action is required.

    N => The alarm is not cleared. Contact Huawei.


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