Itronix X-C 6250 Pro, User Manual

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Appendix B. Troubleshooting
79-0003-003 22 October 1999
Landline Modems
•
If you are using an external modem, make sure the cables are
attached correctly.
•
If you are using an internal modem, make sure the modem is
installed. Check with your organization to determine if your computer
has an optional internal modem installed.
•
Make sure your communications parameters are correct in your
application. Refer to the online Help for your application.
•
Make sure you have the correct COM port selected in your
application. Refer to the online Help for your application. The
following table describes the correct settings for each modem type.
Modem type COM port
External COM1 or COM2
Internal landline COM3
Internal CDPD COM4
•
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.”
The modem dials and receives an answer but does not establish
a connection
•
You may have incorrect parameters selected for your application to
talk with the remote modem. Refer to the online Help for your
application.
•
You may need to adjust your modem’s baud rate or protocol
selection.
•
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.”