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Troubleshooting for the modem hub – Comtrol RocketPort USB Serial or Modem Hub Driver Installation with Windows 98 User Manual

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Troubleshooting

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6.

If further testing is required, select Loopback Test from the Port menu. If the loopback plug is in place and
the port is working correctly, the system displays:

Note: If the loopback plug is not in place or the port is not working correctly, the system returns a “Failed”

message.

Troubleshooting for the Modem Hub
Note:
This discussion is for the Modem Hub only. Please see the

Troubleshooting for Serial Hubs

discussion if

you need this information.

If you are having problems, use the following procedure:

1.

Verify that all cables are connected securely.

2.

Reboot the Windows 98 machine.

3.

Verify that you are addressing the port correctly. In many applications, the device names above COM9
require the prefix \\.\ in order to be recognized. For example, to reference COM10, use \\.\COM10 as the
file or port name.

4.

Use the Test Terminal program (WCOM32) to troubleshoot communications on a modem-by-modem basis.

5.

Remove

and reinstall the driver.

Using the Test Terminal Program to Test Modem Ports
The Test Terminal program enables you to open a modem, send characters and commands to the port, and
toggle the control signals.

Note: You must reboot your system after installation before the Comtrol program group for Test Terminal

appears.

Use the following procedure to run Test Terminal (WCOM32) and test modem ports.

You can use the Test Terminal to:

Verify that the

modem responds

.

Test calls

from the modem to a telephone.

Call

from modem to modem.