ALM-4170 Frame or TS number alarm

Description

The frame number and timeslot number generated by the FPGA are detected once every 2.4s. This alarm is reported when the detected frame number or timeslot number is discontinuous.

Attribute

Alarm ID	Alarm Severity	Alarm Type
4170	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. 65:DTRU/GTRU/DDRM 88:DRRU 92:DRFU 96:MRRU 100:MRFU 101:GRFU 102:GRRU 151:QTRU
3	Board No.	Number of the fault board
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. 12:BTS3012; 13:BTS3006C; 14:BTS3002E; 15:BTS3012AE; 16:BTS3012 II; 17:DBS3900 GSM; 18:BTS3900 GSM; 19:BTS3900A GSM;
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

The TRX board with the alarm cannot work and the carried services are disrupted.

System Actions

The power amplifier of the TRX board is shut down. The TRX mutual aiding is enabled if the alarm occurs in the BCCH TRX board.

Possible Causes

The TRX board is faulty.
The main controlling module is faulty.
The signal transfer board is faulty.

Procedure

Reset the TRX based on the detailed alarm information. Then, 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.
Replace the TRX. Then, 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 3.
Check the main controlling module.
Replace the main controlling module. Then, 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 4.
Check the cables connected to the backplane and the signal transfer board.
Remove the cables connected to the backplane and the signal transfer board. Install the cables again. Replace the cables if necessary. Then, 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 5.
Remove the signal transfer board and install the board again. Then, 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 6.
Replace the signal transfer board. Then, check whether the alarm is cleared.
Y => The alarm is cleared. No further action is required.

N => The alarm is not cleared. Contact Huawei Customer Service Center.