1. When you want to have a talk with the other Phone, Lift the Hand set press the talk button and bell of other phone will ring.
2. While talking please speak into the mouth piece of the Hand set..
3. You can use it at your office and home
4. You can set at you main door for security purpose
5. No professional installation required, Just Plug the power and connect the wire given, The Handsets are ready to be used.