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4 - Troubleshooting
The Modem Connects with Some Modems, but
Not Others
C:
The remote modem may not support data
compression or error correction, which might
cause it to take too long to negotiate a link.
S:
You might try changing the way the modem
negotiates by using the
AT&Qn, ATNn, and
ATS37=n commands. It might be best to start
with
AT&Q0N1.
When Dialing Another Modem, You Receive a
‘CONNECT’ Response, but Nothing Else
C:
The remote modem may be waiting for you to
type a command.
S:
Try to log on to the remote site (press Enter).
S:
Type an AT command, then press Enter.
The Modem Speaker Does Not Make Any Sound
When Connecting to Another Modem
C:
The software may have the speaker disabled.
S:
Change the setting in your software or use the
ATMn command to turn the speaker on.
The Modem Loses the Connection When in Use
C:
The remote modem may have locked up.
S:
Run the Remote Digital Loopback Test (
&T4
command).
C:
The telephone switch may have disconnected
your call.
C:
Your software may have turned off the DTR
signal.
