Patent ID: 8089954

Claim:
An IP telephone system comprising: a calling IP telephone apparatus and a called IP telephone apparatus; a Web server configured to store predetermined information regarding a user of the calling IP telephone apparatus, corresponding to a predetermined URI; and an ENUM server configured to store a NAPTR (Naming Authority Pointer) resource record, the NAPTR resource record including an ENUM domain name corresponding to the predetermined URI stored in the Web server and a protocol corresponding to the predetermined URI; the called IP telephone apparatus, comprising: a display configured to display data; and a controller configured to: receive, from the calling IP telephone apparatus, a predetermined message command for a connection with the called IP telephone apparatus, the predetermined message command including a telephone number of the calling IP telephone apparatus; extract the telephone number of the calling IP telephone apparatus from the predetermined message command received from the calling IP telephone apparatus; generate an ENUM domain name based on the telephone number of the calling IP telephone apparatus extracted from the predetermined message command received from the calling IP telephone apparatus; transmit, to the ENUM server, a request for transmitting, to the called IP telephone apparatus, the NAPTR resource record including the ENUM domain name generated based on the telephone number of calling IP telephone apparatus; receive, from the ENUM server, the NAPTR resource record including the ENUM domain name generated based on the telephone number of calling IP telephone apparatus; determine whether the protocol included in the received NAPTR record indicates a predetermined protocol utilized for accessing the Web server; access the predetermined information regarding the user of the calling IP telephone apparatus stored in the Web server, based on the predetermined URI and the protocol included in the received NAPTR resource record, when it is determined that the protocol included in the received NAPTR record indicates the predetermined protocol; receive, from the Web server, the predetermined information regarding the user of the calling IP telephone apparatus corresponding to the predetermined URI; control the display of the called IP telephone apparatus to display the received predetermined information regarding the user of the calling IP telephone apparatus; and sound a ringing tone at the called IP telephone apparatus while displaying the received predetermined information regarding the user of the calling IP telephone apparatus.