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X-C 6250 Pro (300) NT Users Manual
79-0030-001 11 January 2001
Landline Modems
Third-party applications dont work with COM4
•
Make sure a modem is installed. Locate the Config string label on
the bottom of the mobile computer; a modem is not installed if the
seventh digit is
Z
.
•
Make sure your application is set to use COM4.
•
Make sure your application is using the correct communication
settings (baud, parity, etc.).
•
Some DOS based modem prgrams may not work with the COM4
modem unless special drivers are installed.
•
See Windows help for additional information.
The modem dials and the answering modem generates tone, but
our modem does not begin the training sequence to establish a
connection
Although the problem may appear to originate from the computer, the
source of the problem is the answering modem.
•
Try setting up the answering modem to generate the correct V.22
tone which can usually be done by sending an AT command to the
modem. See the AT Command summary in the
AT Command
Reference
manual for more information.
•
Add
%!1300AO
to the initialization string. If used, this command
must be sent immediately before the command to dial the desired
phone number and sent again before re-dialing the number since the
modem will default to the original setting at the end of the session.
•
From Modems in the Control Panel select the COM4 Modem,
Properties, and then set the Volume to High.
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