LandCell CDM819u User manual - page 16
16
Confirm that the Windows 19200 Standard Modem definition is also set to 19200.
Hot Fax Setup Tips
The modem detection first sends the init string specified in the HARDWARE.INI file located in
the HotFax or HotFax MessageCenter directory by the "DataInit" line. If the modem does not
respond OK within 2 seconds, the generic string "&F&C1&D2E1V1" is tried. The modem is
given another 2 seconds to respond OK. If it doesn't, then we assume there is no modem on the
specified port and auto-detection is aborted.
If the modem gets past this point, we then put it into "non-echo/verbose" mode by sending
"E0V1". If the modem doesn't respond OK to this command within 2 seconds, we drop DTR for
1.5 seconds then try the same command again. If the modem still doesn't respond OK, we again
assume there is no modem on the specified port and auto-detection is aborted.
Try the following to troubleshoot this problem:
•
Verify the "CommandPrefix" entry in the HARDWARE.INI file is set to "AT".
•
Verify the "DataInit" entry in the HARDWARE.INI file is set to something plausible.
"AT&F&C1&D1E1V1" is a safe init string.
•
Verify the modem responds OK to the "DataInit" by typing it in a Terminal application
such as HyperTerminal.
•
Verify the modem responds OK to "ATE0V1" by typing it in a Terminal application.
6 Troubleshooting
In this section, you will find important information relating to the setup and diagnosis of your
CDM-819s/u modem. If you are having trouble communicating with the modem, please read this
"Troubleshooting" section and the "Frequently Asked Questions" section 7.0 in full. If, after
reviewing these sections, you are still having problems connecting, call our Technical Support
line at: 954-430-5811 for more assistance. Toll charges may apply.
6.1 Helpful Hints
Only assign one device to any given COM port on your system.
The Land-Cellular CDM-819s/u data modem has a default COM port speed of 115,200 bps. This
is the data rate at which your modem connects to your computer. The modem's COM port speed
can be lowered to 300bps or raised to 115,200 bps (or 230,400 bps for the CDM819u). Warning:
Please ensure your COM port is capable of 230,400 data rates before changing the modem
to this speed. As this setting adjusts the communications speed that the modem utilizes to speak
to the computer, altering this parameter must be performed in a very specific way. Otherwise, you
may lose communication with the modem. To alter the default speed of 115,200 bps, first,
connect via your terminal emulation software (settings: 115200bps, 8, N, 1, Hardware). Now, you
may issue the AT+IPR command to query or change the default speed. After adjusting the port
speed, disconnect from the modem and reconnect using the new data rate. Refer to the
"Frequently Asked Questions" section 7.0 and "Extended AT Configurations Command Table" in
section 10.7 for more information pertaining to the AT+IPR command.
Make certain the serial cable is firmly connected to an enabled COM port with no hardware
resource conflicts. Make sure that you have properly added the "Standard 19200 bps Modem" (or
the "Kyocera High-Speed Modem") to your system using the "Setting Up Your Modem" section
2.5 above. Also, check to see if you have an infrared (IR) port assigned to your modem's COM