Patent ID: 7453827

Claim:
An IP telephone, comprising: an interface configured to be connected to an ENUM (Telephone Number Mapping) server and to an IP adaptor via a network, the IP adaptor being arranged in the same LAN as the IP telephone, the ENUM server storing a NAPTR (Naming Authority Pointer) resource record associated with a domain formed telephone number of a destination IP telephone, the NAPTR resource record including a URI (Uniform Resource Identifier), the IP adaptor being connected to a camera and to a display, the camera capturing an image of a user of the IP telephone, the display displaying an image of a user of the destination IP telephone; an input device configured to input a telephone number of the destination and to instruct starting of an IP TV camera service; and a controller configured to: transform the input telephone number into the domain formed telephone number; obtain, from the ENUM server, the NAPTR resource record associated with the domain formed telephone number; perform a voice communication with the destination IP telephone via the network; detect an instruction to start the IP TV camera service during the voice communication; and transmit, to the IP adaptor, the URI included in the obtained NAPTR resource record and a request for a video communication with an IP adaptor of the destination IP telephone, when the controller detects the instruction to start the IP TV camera service during the voice communication, the IP adaptor connects with the IP adaptor of the destination IP telephone by calling the destination IP telephone using the URI, encodes the image captured by the camera and transmits the encoded image to the IP adaptor of the destination IP telephone, decodes the image received from the IP adaptor of the destination IP telephone and displays the decoded image on the display.