ALM-5020 Optical Channel B Local Alarm

Description

The optical module B transmits incorrect optical signals, and the performance goes down, or the services are interrupted. This alarm is reported.

Alarm ID	Alarm Severity	Alarm Type
5020	Major	Fault

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. 64:DOMU
3	Board No.	Number of the fault board 0-7:DOMU
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. 13:BTS3006C; 14:BTS3002E;
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

The services are interrupted and restored automatically, or the services are interrupted without restoration.

None.

The optical module B of the DOMU is damaged or not installed properly.

Plug out the input optical fiber of the optical module B. Point the end to a white background and check whether there is a bright spot.
Do not stare at the end of the optical fiber.

Y=>Go to step 2.

N=> Check the equipment of the peer end or the optical transmission link. Rectify the fault according to the suggestions given in 5014 "SFPA Remote Alarm".
Insert the input optical fiber of the optical module B. Check whether the alarm is cleared.
Y=>The alarm is cleared. Alarm handling is completed.

N=>The alarm is not cleared. Go to Step 3.
Perform a loopback test on the input optical fiber and the output optical fiber of the optical module A. Check Weather the SFP A of the DMCM is off.
Y=>Check the equipment at the peer end.

N=>The alarm is not cleared. Go to Step 4.
Replace the optical module B of the DMCM and check whether the alarm is cleared.
Y=>The alarm is cleared. Alarm handling is completed.

N=>The alarm is not cleared. Go to Step 5.
Replace the DMCM and check whether the alarm is cleared.
Y=>The alarm is cleared. Alarm handling is completed.

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