Supporting Personal Mobility with Integrated RFID in VoIP Systems

In this paper, we integrate radio frequency identification (RFID), and SIP express router (SER) to create a VoIP system which can achieve personal mobility. In our proposed system, as soon as the user moves to different locations, the sensors of the doors/locations can read the RFID tag of the user and the server can activate an according phone and register to the SER immediately. To avoid multiple registrations, our system will close the phone which the user used before at the same time. The advantage of this research is that itpsilas unnecessary to change the settings of the SER, and neither to use the specific phone. Furthermore, we can use the same MySQL database as SER and which can reduce the work of the system development.