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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.