Billion Electric Company ISDN TA128s - Manual (Page 12)

Quick Start Guide
11
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.
Uninstalling the tiny USB ISDN TA128
If you decide to permanently remove the driver and utility of the
tiny USB ISDN TA128 from your system, you must run the
uninstallation program from the ISDN Utility program group as
follows:
1. Click “Start”, “Programs” and click the “ISDN Utility” item.
2. Click the “Uninstall DRV & UTL” item. The following ISDN
Uninstallation Program window opens.
3. Check the items that you want to completely remove from
the Windows system and click “OK”.