In this poster, we present a novel P2P (Peer to Peer) based distributed services network (DSN), which is a next generation operable and manageable distributed core network architecture and functional structure, proposed by China Mobile for telecommunication services and wireless Internet. Our preliminary implementations of P2P VoIP (Voice over Internet Protocol) system over DSN platform demonstrate its effectiveness and promising future. Categories and Subject Descriptors C.2.1 [Network Architecture and Design]: Distributed networks, Wireless communication General Terms Management, Design, Economics, Standardization Keywords Mobile communication, Distributed computing, P2P, DSN