Performing The Loopback Test Of A Traffic Channel; Figure 9-1 Bt Loop Test Dialog Box - Huawei BTS3900 GSM Commissioning Manual

BTS3900 GSM
Commissioning Guide

Figure 9-1 BT Loop Test dialog box

Step 2 Specify the test option and the test time.
Step 3 Click Start.
The test result is displayed on the status bar at the bottom of the BT Loop Test dialog box.
Step 4 Repeat
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9.1.2 Performing the Loopback Test of a Traffic Channel

This describes how to perform the loopback test of a traffic channel. Before testing the circuit
switched (CS) and packet switched (PS) services, you need to perform the loopback test on the
Site Maintenance Terminal System to check the transmission link of traffic channels of the BTS.
The loopback test of a traffic channel involves the BIU loopback test and the TRX RF self-test.
Background Introduction
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l
Procedure
Step 1 In the left pane of the Site Maintenance Terminal System window, select Channel. In the right
pane of the window, double-click Channel Loop Test.
The Channel Loop Test dialog box is displayed, as shown in
Issue 03 (2008-07-15)
NOTE
The test time is related to the test option. Generally, a long-duration test produces a stable test result.
NOTE
During the test, you can click Stop to stop the test. In this case, the Stopping test successfully. message
is displayed on the status bar at the bottom of the BT Loop Test dialog box.
Step 1 through Step 3
The BIU loopback test is performed to test the timeslot transmission of the TRX traffic
channel on the BTS DBUS.
The TRX RF self-loop test is performed to test the quality of the RX and TX channels.
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to perform the baseband test on other BTs on site.
9 Commissioning the BTS3900 Services
Figure 9-2.
9-3