Figure 6-3 Test Trx Loopback Dialog Box - Huawei BTS3900 GSM Commissioning Manual

BTS3900(A) GSM
Commissioning Guide

Figure 6-3 Test TRX Loopback dialog box

Step 2 Set the parameters in the Location and Setting areas. That is, set Type to BIU Loop Test, and
set Site, Cell, and TRX as required.
Step 3 Click Start to perform the test. The result is displayed in the Test Result area, as shown in
Figure
If...
The BER is 0%
The BER is not 0% The signaling channel is abnormal. Record the number of the faulty
Step 4 Repeat steps
----End
Issue 02 (2009-04-20)
NOTE
The maximum Duration of the BIU loop test is the default value, which is 10s. In most cases, the default
value is used.
6-3.
Then...
The signaling channel is normal.
TRX, and contact Huawei BTS technical support engineers for
troubleshooting.
NOTE
During the test, you can click Stop to stop the test. The Succeeded in stopping the TRX loop test. message
is displayed in the Test Result area.
Step 1 through
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Step 3 to perform the loopback test on the other TRXs.
6 Optional Commissioning Tasks
6-7