Wireless IP phone using Bluetooth for ITS application

IP telephones using wireless LAN only communicate with other terminal through IP addresses on one's area network or access point area (cell). When a terminal moves from a certain cell to another cell, handover occurs because the terminal can not use the same IP address. On the other hand, by using Bluetooth, communication between terminals can be performed through IP address and Bluetooth addresses. Even if a terminal moves to another cell, the Bluetooth address can be used without a break in the communication.