4 Troubleshooting
Airbridge BTS3606E&3606AE
System Commissioning Guide
4-2
Huawei Technologies Proprietary
Issue 02 (2006-10-10)
4.1 Overview of Troubleshooting
The service commissioning includes the commissioning for the BSS, MSC/VLR, HLR, AUC,
and the interfaces with the PSTN and internet. You must locate the fault by specific analysis.
You can know the working status of the BTS by judging:
z
Whether the MS can access to the network.
z
Whether the MS can set up the traffic links.
4.2 Board Alarms
This section describes the types of board alarms and their handing methods.
4.2.1 Alarm Description
The board faults that occur during the operation of BTS are reported to the OMU in the form
of logs and alarms. The OMU records and processes the faults, and then reports them to the
OMC.
The different types of board alarms are as follows:
z
Public alarms such as T8206 related alarm, self-test failure alarm, TTP link alarm, and
temperature alarm
z
BCKM alarms such as software PLL unlocked alarm, clock alarm, and Abis signaling
link interruption alarm
z
CECM/CCPM alarms such as FPGA self-test failure alarm, 50fc PLL unlocked alarm,
CSM5000 chip alarm, and message queue alarm
z
CMTR/OMTR alarms such as PLL unlocked alarm, receive path input overload alarm,
board temperature alarm, forward digital power too high alarm, DAGC alarm, FPGA
alarm, EPLD alarm, RF PLL unlocked alarm, sector VSWR alarm, fan failure alarm,
HPAU alarm, and LNA failure alarm
4.2.2 Alarm Handling
When a fault occurs or when a fault alarm is cleared, the board reports alarm messages to the
OMU. The OMU determines the availability of the board according to the alarm severity.
Table 4-1 describes how to handle different types of board alarms.
Table 4-1
Handling board alarms
To Handle
Take the Following Action
Clock alarms or PLL unlocked alarms
Check that:
z
Related clock modules and the clock output
are normal.
z
The clock is in the locked state.
