P2P SIP原理和应用

Principles and Applications of P2P SIP

SIP协议是当前VoIP和IM等多媒体协议的呼叫建立协议。P2P技术提供了分布式的网络架构中通信节点之间得对等通信能力,P2P网络架构经历了集中目录式网络架构、纯P2P网络架构、混合式P2P网络架构和结构化P2P网络架构。通过引入P2P技术,SIP网络的能力可以得到增强。P2PSIP网络主要有两个重要的操作:对P2P节点的操作和用户层面的操作。

Session Initiation Protocol（SIP） is a fundamental protocol to initiate multi-media conversation such as Instant Messaging（IM） and Voice over IP（VOIP）. P2P technologies realize P2P communications to spread in distributed networks, The P2P network architecture undergoes centralized directory network architecture, pure P2P network architecture, mixed P2P network architecture, and structural P2P network architecture. By incorporating P2P technologies, SIP network can be improved. There are two kinds of key operations for P2P SIP network： operations on P2P nodes and operations for users.