Itronix X-C 6250 Pro, User Manual

Page: 150 / 173

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.”