Demonstration of Peer-to-Peer Session Initiation Protocol (P2PSIP) in the Mobile Environment

This paper presents a demonstration proposal about an implementation of P2PSIP in the mobile networks. The implementation demonstrates establishment of SIP multimedia sessions between mobile phones with little or no need for centralized servers of any kind. It allows a mobile phone user to use standard phone UI to make voice calls using resources of P2P overlay. A mobile phone user may freely use standard call manager and contact list in a mobile phone. According to our knowledge, P2P SIP has not yet been demonstrated on a mobile platform by anyone.