CORDLESS PHONE

The circuit prevents a cordless phone communication from call- stop and connecting the call to a common line telephone when power fails to maintain the telephone line. The circuit includes an interfacing section (240) for detecting line power, a power supply (210) for generating state signalof main power, power for radio frequency and power failure, a main controller (220) for controlling overall system to maintain signals, a telephone line section (270), and a connected telephone detector (260) for generating connection detecting signal to the main controller (220).