Table of Contents
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On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
Board reset, CPU overusage, emergency serial port link
breakage, initialization failure of minor board components, missing
CELL BUS clock, abnormally high CELL BUS subrack error rate and
CELL BUS driving components failure, etc.
If the above problems occur occasionally or if it lasts for just a
short time, we can keep them under monitoring; if they occur
frequently (or appear long-lasting) and have seriously impeded the
BTS operation, we have to find out if there are other accompanying
problems and then go to the relevant sections in this chapter for
handling advice and solutions or have the board reset or replaced if
necessary.
3.3 BTS Control Interface Module (BCIM)
3.3.1 Fault Description
I.
BTS is unable to establish operation & maintenance link
with OMC after power-on
II.
The operation & maintenance link, signaling link and
service link are broken while BTS is running
3.3.2 Troubleshooting
I.
E1 trunk cable failure or incorrect connection
The E1 trunk cable connection between the BTS and BSC
should be correct (when multiple E1s are configured, the connecting
Chapter 3 Component Failure
3-8
Handling
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Table of Contents
Troubleshooting
