Billion mini USB ISDN TA128
2.5.1 The Diagnostic Program
After you have installed your Billion mini USB ISDN TA128, 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.
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