| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a telephone apparatus which allows a stable and economical telephone call using a dynamic IP address to a telephone apparatus which serves as a communication partner, without using a fixed IP address and a registration server. <P>SOLUTION: The telephone apparatus is provided with: a module for connection with a public network and an information communication network; an IP address identification module which identifies a sound signal or an electronic mail to know the IP address transmitted from a partner apparatus during call connection through the public network; and a control module which starts the telephone call using a VoIP through the information network, during the call connection using the IP address identified by the IP address identification module. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
