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Appendix B. Troubleshooting
79-0030-001 11 January 2001
Landline Modems
• 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 COM4
Internal CDPD / GSM COM3
• Make sure that the Interrupt Request lines (IRQs) for COM4 specified
for Windows matches 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 modems baud rate or protocol
selection.
• Make sure that the Interrupt Request lines (IRQs) for COM4 specified
for Windows matches the IRQ lines specified in the SCU.
You may also need to try a different IRQ setting. See Section 5,
Customizing Settings.
Communications programs such as HyperTerminal or Procomm
Plus dont seem to work or they lock Windows
• If you are using the internal modem, be sure to specify COM4 as the
communications port on the Control Panel, or the Mini PCI Modem Icon.
• Verify with your company that your computer has an internal modem
installed.
• When you first try to use HyperTerminal or similar application, the
system may respond 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.