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User’s Manual 9-19
Troubleshooting
Modem
Refer to Appendix C, AT Commands and Appendix D, S-registers.
Problem Procedure
Communication
software can’t initialize
modem
Make sure the computer’s internal modem
settings are correct. Refer to Phone and Modem
Properties in the Control Panel.
You can hear a dial
tone but can’t make a
call
If the call is going through a PBX machine, make
sure the communication application’s tone dial
detection feature is disabled.
You can also use the ATX command. Refer to
Appendix C, AT Commands.
You place a call, but a
connection can’t be
made
Make sure the settings are correct in your
communications application.
After making a call you
can’t hear a ring
Make sure the tone or pulse selection in your
communications application is set correctly.
You can also use the ATD command. Refer to
Appendix C, AT Commands.
Communication is cut
off unexpectedly
The computer will automatically cut off
communication when connection with the carrier
is not successful for a set time interval. Try
lengthening this time interval.
A CONNECT display is
quickly replaced by NO
CARRIER
Check the error control setting in your
communications application.
You can also use the AT\N command. Refer to
Appendix C, AT Commands.
Character display
becomes garbled
during a
communication
session
In data transmission, make sure the parity bit and
stop bit settings correspond with those of the
remote computer.
Check the flow control and communication
protocol.
You cannot receive an
incoming call
Check the rings before auto answer setting in
your communications application.
You can also use the ATS0 command. Refer to
Appendix D, S-registers.
If problems persist, contact your dealer.