Toshiba Portege 7140 - Manual (Page 133)

User's Manual Troubleshooting 9-15
Version
5
Last Saved on 20/12/99 04:11
Portege 7140CT User's Manual – 7140_UK.doc – ENGLISH – Printed on 20/12/99 as IM_714UK
Modem
Refer to the online help files for the international modem.
Problem Procedure
Communication
software can't initialise
modem
Make sure the computer’s serial port settings are
correct. Refer to Chapter 7, Setup and Password
Security .
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 the
chapter on AT commands in online help files for
the internal modem.
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
the chapter on AT commands in online help files
for the internal modem.
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
the chapter on AT commands in online help files
for the internal modem.
Character display
becomes garbled
during a
communication
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
the chapter on S-registers in online help files for
the internal modem.
If problems persist, contact your dealer.