D-Link ENW-3503, User Manual

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5. Q & A
LAN + Fax/ Modem PC Card 5-4
C:Make sure the software and modem are set to the same
COMx: port.
C:The modem may not have hung up the phone line since the
last call.
A:Change to command mode and type ATH then press Enter.
Q:The modem can connect to 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.
A: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.
Q: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. Or try to press Enter for logging on to the remote
site.
Q:The modem speaker does not make any sound when
you're connecting to another modem.
C:The software may have the speaker disabled.
A:Change the setting in your software or use the ATMn
command to turn the speaker on.
Q:The modem disconnects (looses the connection) in the
middle of use.
C:The remote modem may have locked up.
C:The telephone switch may have disconnected your call.
C:Your software may have turned off the DTR signal.