Motorola Modem SM56 User Manual download pdf (Page 14)

• The modem installs at COM 5 (or higher)

Some communications applications do not communicate with a COM port higher than COM4. If

the SM56 installs on COM5 or higher, force the modem to a lower COM port as follows.

1. Open the SM56 Control Panel application.

2. Select the Advanced tab.

3. Click on the radio button for the desired COM port. Note that unavailable COM ports are

grayed out and not selectable.

• Windows 95/98 DOS box applications do not work with the modem

By default DOS box support is disabled after installing the SM56 modem. You must enable it via

the Advanced tab in the SM56 Control Panel application (Start->Settings->Control Panel, then

double-click the SM56 Modem icon). Make sure the DOS box check box is checked. If not, click

it to check it, exit the SM56 Control Panel application and restart the computer. You must restart

the computer to complete DOS box enabling.

If the Enable DOS box check box is already checked (i.e. enabled), and DOS box application still

do not work, try:

1. Open the Control Panel.

2. Double click the System icon.

3. Expand the Modem branch.

4. Double click the Motorola SM56 modem.

5. Select the Modem tab. Make a note of the COM port number.

6. Select the Resources tab. Make a note of the IRQ number listed.

7. For DOS support to operate correctly, the SM56 modem cannot occupy the standard IRQ for

the COM port number.

8. Uncheck the Use Automatic Resources check box.

Double click on the Interrupt Request label and change the IRQ to a different number that

is not in conflict with another device. (If there is no free IRQ: free one, or change other

device IRQ levels to free a non-standard IRQ).

• There is no dial tone

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Motorola Modem SM56 User Manual Page 14