User's Manual

Table Of Contents
150
X-C 6250 Pro Users Manual
79-0003-003 22 October 1999
Landline Modems
Communications programs such as HyperTerminal, Procomm
Plus, or Speaker Phone dont seem to work or they lock Windows
If you are using the internal modem, be sure to specify COM3 as the
communications port.
Verify with your company that your computer has an internal modem
installed.
When you first try to use HyperTerminal or similar application, the
system responds with a message asking if you want to install the
modem. Answer Yes to this question and follow the instructions on
the screen to install it.
Make sure the IRQ lines for COM3 and COM4 are specified for
Windows. See Section 5, Customizing Settings, to view and
change IRQ settings.
Third-party applications dont work with COM3
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 COM3.
Make sure your application is using the correct communication
settings (baud, parity, etc.).
The modem may not be powered on. If you are using a DOS
application, before running the application, make sure that MODEM
ON is called from the DOS command line or from a batch file.
Make sure that the Interrupt Request lines (IRQs) for COM3 or
COM4 specified for Windows match the IRQ lines specified in the
SCU.
You may also need to try a different IRQ setting. See Section 5,
Customizing Settings.