ALM-5072 MPT Major Clock Abnormal

Description

This alarm is reported when the local MPT 10 MHz clock or the CPU working clock has no output or is faulty.

Alarm ID	Alarm Severity	Alarm Type
5072	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. 87:GTMU
3	Board No.	Number of the fault board 0:GTMU
4	PassNo	Number of the passage where the faulty board is located.
5	SubLink No.	Alarm sub-category number 0: Local MPT 10 MHz clock 1:CPU working clock
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;
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

Critical:If the active MPT 10 MHz clock is faulty, the system automatically switches the clock source over to the standby 10 MHz clock. Stability of the system clock declines, and the success rate of service switchover also falls.
If the CPU working clock is faulty, the CPU cannot work.
Minor Current services are not affected, yet system reliability declines.

When a critical alarm related to the active MPT is reported, the system handles the alarm as follows:
1) If the NodeB has a standby MPT, the system performs active/standby switchover for the MPT.
2) If the NodeB does not have a standby MPT, the system switches the current 10 MHz clock from the active clock over to the standby clock.
When the alarm reported is a critical one related to the standby MPT or a minor one related to the active or standby MPT, no system action is taken.

There maybe hardware fault existing with the board.