3Com 000839-08 Manual page 124

PROBLEM DIAGNOSIS
Your modem won't The modem you're trying
connect at 2400 to connect with could be
bps with a 2400 an older model that
bps modem. doesn't support error
control.
You could have a conflict
Your screen keeps with the remote modem's
displaying random settings for word length,
garbage characters. parity, and stop bits.
Your software and modem
might not be set to the
same flow control
settings.
The best flow control
settings might not be
enabled on your modem.
T O
ROUBLESHOOTING AND
POSSIBLE SOLUTION
You can disable error control on your modem by typing AT&M0 in
terminal mode and pressing ENTER. Now try placing the call to the
remote modem again. When finished, reset your modem to enable the
error control features. In terminal mode, type ATZ and press ENTER.
Note: ATZ4 or AT&F1 are often the best reset strings, as they restore
hardware flow control defaults.
Set your modem's word length, parity, and stop bits the same as the
remote modem or BBS you are calling.
Make sure the software and modem have the same flow control settings
(hardware [RTS/CTS] and software [xon/xoff]).
In terminal mode, type AT&F1 and press ENTER to load the optimal
settings.
H R
NLINE ELP ESOURCES
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