SIP Proxy Server

A SIP Proxy Server is an integral part of the SIP ecosystem, functioning as an intermediary that routes SIP requests between user agents and other SIP servers. Its primary role is to facilitate the establishment, management, and termination of SIP sessions by forwarding requests to the intended recipients and responses back to the originator. The SIP Proxy Server plays a crucial role in managing SIP traffic and ensuring efficient and reliable communication across the network. 

Functionality: 

Request Routing: The SIP Proxy Server analyzes the headers and content of SIP requests to determine the destination user agent or server and then routes the requests accordingly. It can perform various types of routing, including direct routing based on the request URI and intelligent routing using internal logic or external databases.