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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...
Session initial protocol (SIP) is a signaling control protocol for creating, modifying, and terminating the multimedia sessions. SIP can provide personal mobility by addressing a single user located at different terminals according to a unique logical address. Moreover, user may register multiple contact addresses to VoIP servers and the server will fork the incoming request to these contact addresses...
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