Lawful Interception in P2P-Based VoIP Systems
Principles, Systems and Applications of IP Telecommunications. Services and Security for Next Generation Networks
Feasibility evaluation of a communication-oriented P2P system in mobile environments
Mobility '09 Proceedings of the 6th International Conference on Mobile Technology, Application & Systems
Performance evaluation of a Kademlia-based communication-oriented P2P system under churn
Computer Networks: The International Journal of Computer and Telecommunications Networking
Extending P2PSIP VoIP communication for ad hoc networks
Proceedings of the 6th ACM workshop on QoS and security for wireless and mobile networks
Enhancing the reliability of SIP service in large-scale P2P-SIP networks
GPC'11 Proceedings of the 6th international conference on Advances in grid and pervasive computing
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Decentralized Voice over IP networks are a promising alternative to classical server-based SIP networks especially in disaster areas or areas without centralized infrastructure. This paper presents P2PNS, a secure distributed name service for P2PSIP. P2PNS can be used to resolve SIP AoRs to Contact URIs without using DNS or centralized SIP servers. The name service provides several security mechanisms to efficiently prevent identity theft and to ensure the uniqueness of SIP AoRs in a completely decentralized and untrusted network. The proposed two-stage name resolution mechanism allows to efficiently handle frequent IP address changes. Because P2PNS provides a generic name service it is not limited to P2PSIP but can also be used e.g. to build a distributed DNS system.