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Providing both analytical and empirical results, it analyzes the suitability of Distributed Hash Tables (DHT)-based Peer-to-Peer Session Initiation Protocol (P2PSIP) overlay networking as a substrate for wireless, distributed multimedia services. Session initiation is just one application of this framework. First, it discusses the potential of P2PSIP for different applications and analyze the security and reliability of P2PSIP. Second, it presents prototype mobile P2PSIP implementation and a P2PSIPbased distributed calendar application for wireless user groups. Third, it measures average DHT hop count and retransmission count in up to 2000-node P2PSIP overlays. Fourth, it analyzes numerically the scalability and robustness of P2PSIP and client-server SIP in some generic networking scenarios. standardized peer-to-peer networking protocol for distributed Internet applications, both fixed-line and mobile.
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