ALM-3718 13M Clock Maintenance Alarm

Description

This alarm is triggered when the BTS clock has not been locked to the BSC clock for successive 365 days cause the frequency of the 13 M crystal oscillator deviates.

Attribute

Alarm ID	Alarm Severity	Alarm Type
3718	Warning	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. 129:IOMU
3	Board No.	Number of the fault board 0:IOMU
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 or module is located 9: BTS3002C
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

When the alarm occurs, the BTS performances such as RF specification and asynchronous handover related specifications might decrease.

System Actions

None.

Possible Causes

The alarm occurs when the both of the following two conditions are met at a time.
The 13 M clock of the BTS3002C has not been locked to the BSC clock for successive 365 days.
The frequency precision of the 13 M crystal oscillator has not been calibrated for 365 days.

Procedure

Calibrate the frequency error of the 13 M crystal oscillator with a frequency meter.Please contact Huawei Customer Service Center