If the ICN icon is not in your system tray, go to Start > Programs > USRobotics > USRobotics Internet Call Notification to start the ICN program.
Verify your call waiting service is available. To verify this, place a regular voice call using the same line as the modem, and have someone dial into this number from another phone line. You should hear a beep coming from the telephone network indicating an incoming call. If you do not hear the beep, check with your telephone service operator that Call Waiting is effectively available. Your telephone service operator will also be able to explain you how to activate it if it is not active by default.
You will be notified of incoming calls only if you established a connection using the V.90 or V.92 protocol. If you connected with one of these protocols, your reported connection speed will typically be above 33,600 bps, but below 57,600 bps. If you connect through any connection other than through the V.90 or V.92 protocol (such as V.34 for example), this feature will not work and you will not be notified of incoming calls.