Toshiba PRO A300D user manual Modem, Carrier

		Troubleshooting
Modem
	Problem	Procedure
	Communication	Make sure the computer’s internal modem
	software can’t initialize	settings are correct. Refer to Phone and Modem
	modem	Options in the Control Panel.

You can hear a dial tone If the call is going through a PBX machine, make but can’t make a call sure the communication application’s tone dial

detection feature is disabled.

You can also use the ATX command.

You place a call, but a Make sure the settings are correct in your

connection can’t be communications application. made

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 Appendix C, AT Command.

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	Check the error control setting in your
quickly replaced by NO	communications application.
CARRIER
	You can also use the AT\N command.
Character display	In data transmission, make sure the parity bit and
becomes garbled during	stop bit settings correspond with those of the
a communication	remote computer.
	Check the flow control and communication
	protocol.
You cannot receive an	Check the rings before auto answer setting in an
incoming call	incoming call your communications application.
	You can also use the ATS0 command.
	If problems persist, contact your dealer.

User’s Manual 9-17