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.
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