Motorola SM56 Troubleshooting, ∙ My Communications Software Cannot Use the Modem at COM

Models: SM56

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Within a few seconds a window will appear with the modem responses to various ATI commands issued to it. If this happens, the modem software is properly installed and functioning correctly.

Verifying Proper Hardware Operation

To verify correct SM56 modem hardware operation, you can use the following local analog loopback (LAL) test procedure, as follows:

1.Important: Remove the telephone line cable from the modem card.

2.Open HyperTerminal (or any terminal application).

3.Optionally, select a connection name and icon.

4.In the Connect Using window, select the Motorola SM56 ...... modem. Click OK.

5.Enter a number in the Phone Number box...any number since we will not be dialing it. Click OK.

6.On the next screen select Cancel.

7.Enter AT and hit <Enter>.

1. The response OK should appear.

8.Enter ATS46 = 23 and hit <Enter>.

9.Enter AT&T1 and hit <Enter>. Wait a few seconds.

10.Type some letters at the keyboard. If the hardware is functioning correctly, the letters you type appear on the screen.

11.To exit this test mode, type +++ in quick succession (note no carriage return) to escape to command mode. After getting the OK response type ATH <Enter> to hang up.

6 Troubleshooting

If there is a problem when using the SM56 modem, and your communications application does not explain the problem, check the following list of symptoms and tips.

My Communications Software Cannot Use the Modem at COM 5

Some communications applications, such as older versions of AOL, do not communicate with a COM port higher than COM4. Sometimes on Windows 98 platforms the SM56 install program will not be able to map the modem to a COM port number below COM5. If the modem installs on COM 5 or higher you can manually force the modem onto a different COM port using the SM56 Helper application (COM Ports tab) in the Windows System tray (just to the right of the Task Bar).

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.

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Motorola SM56 Troubleshooting, ∙ My Communications Software Cannot Use the Modem at COM, ∙ There is no dial tone