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Other Troubleshooting Tips
Problem: Your modem seems to install under Windows,
but Windows cannot find it later.
Solution
:
If your computer has a built-in modem on the
motherboard, Windows may reinstall it the next time
you start up. Consult your computer’s
documentation or call your computer’s manufacturer
to get instructions on how to disable the built-in
modem.
Problem: The software cannot find the modem and the
modem does not respond to AT commands.
(The following comment applies to many other
problems as well.)
Solution
:
The most common problem with modems is that the
communications software is not configured for the
same COM port as the modem.
Check which COM port the modem is using. Make
sure that the software’s COM port setting matches
the modem’s COM port setting. From the Windows
Toolbar, go to Start > Settings > Control Panel > Modems
> Diagnostics. Click the COM port for your modem,
then click More info. If Windows displays the
modem’s ATI responses, the modem is working.
Another problem is that COM port resources may be
in use by another device. Make sure that the COM
port resources used by the modem are not being
used by any other device, such as a soundcard.
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