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User Manual
Airbridge cBTS3612-450 12-carrier CDMA Base Station
band frame backplane Then, please check whether the BCKM is well plugged and
runs the correct software.
II. E1 trunk cable fault or connection error
The operation & maintenance, signaling and traffic link between the base station and
OMC/BSC are all transmitted via the E1 trunk cable through the BCIM. E1 trunk cable
works in the mode of IMA or UNI. The E1 trunk cables between the base station and
BSC must be correctly connected. When there are multiple routes of E1 to be
configured, the connections order between the base station and BSC must be in the
same as the routes.
E1 trunk cable fault and connection order error can be checked by means of the E1
loopback test.
The configuration and status of IMA/UNI can be obtained by querying the specific
status of the boards in a base station.
III. BSC interface board (XIE) fault
If it can be confirmed that E1 trunk cable is good and the connection order is correct
after E1 loopback test, but the BCIM cannot intercept the configuration, it may be a
BSC interface board (XIE) that is faulty. And this fault can be eliminated by resetting
or replacing the XIE.
IV. BSC and OMC fault or configuration error
If the IMA group and link status of the BCIM are found normal by means of querying
the specific status of a base station board, but the OMU BOOTP request fails, or the
BOOTP request succeeds but the TCP connection fails to be established, it may be
BSC and OMC faults or data configuration error. For details, please refer to the
locating of "5.1 OML Signaling Link Fault" and "5.2 Abis Signaling Link Fault".
6.4 BTS Control & Clock Module (BCKM)
6.4.1 Description of Fault
The OML fails to be established between the base station and the OMC.
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The Abis signaling link cannot be established between the base station and
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BSC.
The base station clock does not work normally.
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Other possible BCKM faults.
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6.4.2 Fault Analysis and Location
I. The OML fails to be established between the base station and the OMC
If the base station BOOTP request succeeds, but the OML of the base station cannot
be correctly established, the BCKM board of the base station will keep on performing
BOOTP request operations. To locate the reason that the base station OML cannot
be established, please refer to "5.1 OML Fault".
03Q-0112-20020720-120
6 Part Module Fault
6-5
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