|
1. The most obvious cause is that you've neglected to plug your telephone
line into your modem. Double check to make sure. Or the telephone cable
may be
bad -- test it on a regular telephone.
2. A common problem is plugging your telephone line into the wrong jack
on your modem. Many modems have two jacks, one for the telephone line
and
one for a telephone handset. On some of these modems (e.g., USRobotics),
you won't be able to get a dial tone or otherwise use the modem if you
plug the
telephone line into the telephone handset jack. Double check to make sure.
3. Another common problem is that some other device
on the same telephone line (e.g., a telephone answering machine) is off-hook.
Double check to make
sure that all other devices are on-hook.
4. There may be a problem on your telephone line.
Make sure that you can get a dial tone on a telephone handset connected
to and through your modem when
the modem (or computer in the case of an internal modem) is turned off.
5. Many voicemail systems use a "stutter" dial tone or beeping
when you pick up the phone to indicate that you have voicemail waiting.
These unexpected sounds
can make the modem think there is no dial tone. If you must use the modem
on a line with these voicemail or similar sounds, you can try the following
workarounds: Increase the amount of time that the modem waits for dial
tone by setting the number of seconds to wait in register S6 (e.g., S6=5).
See
also:
What
do I do when I get a "comm port already in use" error?
What should I do if my modem is not responding?
|
