Summary: | 碩士 === 靜宜大學 === 資訊管理學系研究所 === 95 === As an application-layer signaling protocol over the IP network, Session Initiation Protocol (SIP) is designed for creating, modifying, and termination multimedia sessions or calls. Recent year, SIP is a popular protocol on voice over IP service and created more and more service by provider. For example, the group address service that user can take a call to a group and proxy server will forking this call request to all these group members until a group member pick up the phone that proxy server will cancel others request. We will design a SIP-based Anycasting Call service that proxy server no longer use forking method to search available group member, the proxy server will auto choose a suitable group member and forward this call request to he, it can avoid unnecessary request message and balance the workload.
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