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On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
can run E1 trunk cables from one or all of these 4 DB25 connectors
to the DDF rack in the cabinet room.
II.
Caution-demanding issues
During the BTS capacity expansion or maintenance, we should
have a clear idea which DB25 connector is being used. Incorrect
cable connection will result in communication failure.
When the number of the E1 trunk cables actually used is less
than 4, generally we should use the first DB25 connector of the front
BESP (viewing from cabinet front); When the number of the E1 trunk
cables actually used is greater than 4, we should pick up the DB25
connectors in a "from-front-to-back" order according to the actual
capacity requirements.
6-4
Chapter 6 Switches &
Interfaces
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Table of Contents
Troubleshooting
