Modem - Toshiba Satellite M200 User Manual

Troubleshooting

Modem

Problem
Communication soft-
ware can't initialize
modem
You can hear a dial
tone but can't make a
call
You place a call, but a
connection can't be
made
After making a call
you can't hear a ring
Communication is cut
off unexpectedly
A CONNECT display is
quickly replaced by
NO CARRIER
Character display
becomes garbled
during a
communication
9-20
Procedure
Make sure the computer's internal modem set-
tings are correct. Refer to Phone and Modem
Options in the Control Panel.
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
the chapter on AT Commands in online help
files for Appendix C, AT Commands.
Make sure the settings are correct in your com-
munications application.
Make sure the tone or pulse selection in your
communications application is set correctly.
The computer will automatically cut off commu-
nication when connection with the carrier is not
successful for a set time interval. Try lengthen-
ing this time interval.
Check the error control setting in your communi-
cations application.
You can also use the AT\N command. Refer to
the chapter on AT commands in online help files
for Appendix C, AT Commands.
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 pro-
tocol.
User's Manual