Also termed as the next generation doorbell, DoorBell Fon is a unique and modern intercom system that is simple and easy to operate. It is manufactured by American Communication & Networks Corp (ACNE) based in Chicago Illinois. Enhancing convenience and the level of security simultaneously, the device can be used with the normal telephone line or as a stand-alone device. offering a number of latest features such as opening door-locks and chiming the doorbell, DoorBell Fon is a modern device that requires only one connection i.e. the telephone line. It can also be connected to PBX and key systems. The best feature of the product is that it is smartphone compatible and can be controlled by the user's mobile phone.