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Troubleshooting
If the modems are having trouble passing data after connecting,
check the recommendations and solutions to this problem in
Table A-4.
Table A-4. Online Operation
Symptom
Data is scrambled
Missing data
during a transfer
Garbage
characters appear
on your monitor
when your modem
connects to
another modem
Modem hangs up,
but does not
indicate a hang up
Table A-5 focuses on problems you may experience during fax
operation.
Table A-5. Fax Operation
Symptom
Modem cannot
send or receive a
fax
Action
Use your communications software to verify that the
character format (data bits, parity, and stop bits) is set
to the same value in both modems.
Verify that you are using the same method of flow
control for both the modem and the computer
(RTS/CTS or XON/XOFF).
If using XON/XOFF flow control, verify that the
modem's parity matches the computer's parity.
Your modem is not using error control and the other
modem is using error control. The garbage characters
are part of the error control handshaking sequence.
Verify that you are using the same method of flow
control for both the modem and the computer
(RTS/CTS or XON/XOFF).
Make sure that the &D2 command is set.
Make sure that the &C1 command is set so that when
the CD signal turns Off, the modem hangs up.
Action
Make sure the modem and PCMCIA socket are
configured for modem operation.
Refer to the Fax Operation section of Chapter 3 or
your fax application software user's guide for more
information.
Issue 1 November 1994
A-7
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