Performing Channel Loopback Tests; Figure 6-4 Test Channel Loopback Dialog Box - Huawei BTS3900 GSM Commissioning Manual

6 Optional Commissioning Tasks

6.2.2 Performing Channel Loopback Tests

This describes how to perform channel loopback tests. Before testing CS and PS services, you
must check that the transmission links of the traffic channels in the BTS are proper.
Context
The BIU loopback test is performed to test the timeslot transmission over the TRX traffic channel
on the DBUS in the BTS.
Procedure
Step 1 On the BSC6000 Local Maintenance Terminal window, choose BTS Maintenance >
Maintain TRX > Test Channel Loopback.
The Test Channel Loopback dialog box is displayed, as shown in

Figure 6-4 Test Channel 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, TRX and Channelas required.
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Copyright © Huawei Technologies Co., Ltd.
BTS3900(A) GSM
Commissioning Guide
Figure 6-4.
Issue 02 (2009-04-20)