VOICE OVER INTERNET PROTOCOL APPARATUS AND METHOD FOR PORTABLE TERMINAL

An Internet phone device using a portable terminal and a method are provided to enable the first portable terminal to select a wired network corresponding to a predetermined wired network connected to the second portable terminal, so as to carry out an Internet phone service through wire or wireless communication with the second portable terminal. A storage(130) stores an authentication program for user authentication and an Internet phone application program. A wired network selector(110) selects a wired network corresponding to a wired network of the second portable terminal connected to a predetermined wired network. An input/output unit(120) transceives voice data by connecting with the second portable terminal. The wired network uses at least one of a power line communication network based on a power line and a wired Internet network using a wired LAN(Local Area Network).