This feature permits a 3-Way conference call. To use 3-Way Calling, place the person you're talking with on hold by pressing the receiver, "Flash", or "Talk" button. A dial tone will follow. Dial the number of the person that you would like on the 3-Way call. When you get an answer, press the receiver, "Flash," or "Talk" button again. All three of you will be connected. When either of the people you called hangs up, you remain connected to the other person. As the center of the 3-Way call, if you hang up, the call will end for all parties.