User Guide

Troubleshooting General/ Testing the Modem - 16
Testing the Modem
The iMac ships with ClarisWorks (a.k.a. AppleWorks) software,
which can be used to test the iMac modem connection. You should
run this test if the modem is not able to dial out. To perform this
test:
1. Locate and launch ClarisWorks. (Version 5.0 ships with the
iMac computer.)
2. From the ClarisWorks New Document window, select
Communications and click OK. You will be presented with an
untitled communications document.
3. Click on the settings menu item and select Connection from the
menu, which will bring up a new window. This window allows
you to select the communications toolbox device to access the
modem.
4. Click and hold the menu next to Method and select the Serial
Toolfrom the options presented.
5. Click on the Internal Modem setting under the Current
Portsetting. After selecting the port, click the OK button. (You
can ignore the rest of the settings.)
6. Open the serial port by selecting Open Connection from the
Session menu.
7. Type “AT” into the Communications document. The
modemshould respond with an OK message.
This procedure verifies that the program is connecting with the
modem and that the modem is responding.
A good test to see if the phone line is working is to type “ATDT”,
which will open the phone line. If the modem reports NO
DIALTONE, there isn't a valid analog line connected. If the phone
line works, you will hear a dial tone until you press the Return
key, at which time the modem will report NO CARRIER. A No
Carrier message means the phone line was successfully opened.
Other things that can be done here are:
• Call another modem to verify connections.
• Call a working phone number to see if you can successful
connect to an outside line.
• Use the ATI1-17 commands to check firmware versions and
modem features.
• Use ATZ to reset the modem back to its original configuration.