Modem Troubleshooting

Cannot call out or receive calls.

Make sure the phone line is clear and operable by calling out with a telephone.
Double check that the parameters for baud, parity stop bits, etc.. have been set properly.
Check that the COM ports are matched between the hardware and the communications software
Check that you have the proper COM port number. DTR setting and interrupt level settings.
The software may not be functioning properly. Try it on another computer If it does not work the software is your suspect.
Try another communications software on your computer
Try taking out or disabling all other serial ports to see if the problem is caused by a COM port. IRC) or DTR conflict.
Try your modem in another computer if it does not work there also, the modem is your suspect and should be replaced.
Try another modem in your computer