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The modem does not dial a phone number after you
execute the AT dial command.
If you are using touch tone dialing on a phone line that
requires pulses, then it may not work.
Use ATDT in place of ATDP.
When your communications software tells the modem
to dial, it does not.
Make sure the software dialing prefix is ATDT.
Make sure the software and modem are set to the
same COMx: port.
The modem may not have hung up the phone line
since the last call.
Change to command mode and type ATH then
press Enter.
When dialing another modem, you receive a
'CONNECT' response, but nothing else.
The remote modem may be waiting for you to type a
command. Or try to press Enter for logging on to the
remote site.
The modem speaker does not make any sound when
you're connecting to another modem.
The software may have the speaker disabled.
Change the setting in your software or use the ATMn
command to turn the speaker on.
The modem disconnects (looses the connection) in the
middle of use.
The remote modem may have locked up.
The telephone switch may have disconnected your
call.
Your software may have turned off the DTR signal.
The modem does not connect with another modem.
There may be a problem with the remote modem if
you do not hear the high pitched tone from the remote
modem.
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