On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
Chapter 2 General Fault Processing
2.1 MS Access Network Failure
When the MS is powered on, it will go through the following
processes: system determination substate, pilot channel acquisition
substate, sync channel acquisition substate, timing change substate
and finally enter the mobile station idle state and receive the correct
system message within the specific time. Only after going through all
these processes, can the MS access the network and work properly.
2.1.1 Fault Description
The MS is unable to access the CDMA network after powered
on.
2.1.2 Troubleshooting
First make sure the MS parameters (such as basic frequency,
assistant frequency, and SID, NID etc.) have been correctly set, and
then go through the following processes one by one to locate and
eliminate problems.
I.
Check if the BTS is running properly
As BTS is not running, the MS will not be able to connect to the
network. The reasons that BTS is not running could be:
Chapter 2 General Fault
2-1
Processing