Motorola SM56 User Manual
Page 6
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).
The standard I/O addresses and IRQs for COM Ports 1-4 are as follows:
COM Port
IO Address
IRQ
1
3F8
4
2
2F8
3
3
3E8
4
4
2E8
3
•
There is no dial tone
1. Ensure that the telephone cable is securely connected at both ends.
2. Ensure the telephone cable is plugged into the correct jack on the modem -- some modems
provide a second jack for handset support.
2. Unplug the telephone line cable from the computer, and connect it directly to a telephone from
the wall outlet. Check for a dial tone. If there is none, the problem is in the telephone line or
system. Call the service provider.
•
Get An Error Message "You are not connected to a standard phone line"
When you try to dial a connection an error message box pops up, indicating that your are not
connected to a proper analog phone line. This is the SM56 digital line guard (only available on PCI
II and AC-L modems) feature, which protects against hardware damage if the modem is plugged
into a high current phone outlet -- such as a digital phone jack. The modem automatically detects
the over-current and goes back on-hook before hardware damage occurs. Check the phone outlet
and make sure that it is a real analog phone line. Try another analog phone jack.
•
I
Cannot Hear Call Progress
1. Make sure your speakers are connected to the speaker output jack on your sound system.
2. Call progress reporting on the SM56 requires Direct X 5.0 (for Win 98, Windows Me, and Win
2000, Direct X 3.0 for Win 95 and NT 4.0) or later be installed on your PC, and that your sound
system/drivers support Direct X playback. To test, go into the SM56 AC-L Modem helper
Desktop Tray application and select the Call Progress tab. Then click the Test button. If you
do not hear anything then your sound system does not support Direct X (or the correct version).