Billion Electric Company TA128 - Manual (Page 24)

Billion mini USB ISDN TA128
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2.5.1 The Diagnostic Program
After you have installed your Billion mini USB ISDN TA12 8 ,
you are highly recommended to use the diagnostic program to
make sure the Billion mini USB ISDN TA128, its drivers and
the ISDN line are all properly installed and connected. To run
the diagnostic program please follow these instructions:
1. Open the “Programs” folder on the “Start” menu and
click on the “ISDN Utility” program folder.
2. Click on the “Diagnostic Program” item to start the
program.
3. In the “Own ISDN Number” box, type in the subscriber
number of your own ISDN line.
4. Press “Loopback Test” to begin the diagnostic procedure.
It will make a call from the B1 channel that returns
through the B2 channel. The D and B channels will be
tested for line integrity.
5. Please refer to Chapter 3 Troubleshooting if you see
any error or warning message.