Patent ID: 7471958

Claim:
A cordless telephone system having a plurality of terminal devices and telephone equipment capable of wireless communication with the terminal devices and connectable to a phone line, the system allowing a terminal device of the plurality of terminal devices to communicate with an external communication device connected to the phone line, the terminal devices including one or more first terminal devices having a cordless telephone profile for a child device of the telephone equipment and one or more second terminal devices having a profile other than the profile for the child device, wherein each of the first terminal devices comprises: an identification-information memory unit that stores terminal-device identification information; and a wireless communication unit that transmits the identification information stored in the identification-information memory unit and the profile for the child device to the telephone equipment; wherein each of the second terminal devices comprises a wireless communication unit that transmits the profile other than the profile for the child device by wireless communication, and wherein the telephone equipment comprises: a wireless communication unit capable of wireless communication with the wireless communication unit of either the first terminal device or the second terminal device; a judging unit that judges whether the profile sent by the terminal device is the profile for the child device or not; an output unit that outputs, explicitly to a user, only the identification information of a terminal device whose profile is judged as the profile for the child device by the judging unit, the terminal device being included in the terminal device having transmitted the identification information; a user-operated unit operated by the user for selectively inputting the identification information about a terminal device outputted by the output unit; and a register unit that stores the identification information about the terminal device so that the terminal device acts as a child device, the identification information about the terminal device being inputted through the user-operated unit.