SIP TECHNICAL OVERVIEW
SIP is used to signal and control interactive communication sessions. The uses for such sessions include voice, video, chat and instant messaging, as well as interactive games and virtual reality. The SIP protocol is increasingly being used to provide Voice over IP, Presence and Instant Messaging in Next Generation Networks, and being mandated for many new applications, including 3G telephony.
SIP is a protocol developed primarily by the SIP, and SIPPING working groups of the Internet Engineering Task Force (IETF) and is an alternative to the International Telecommunications Union (ITU) Recommendation H.323, but is a more lightweight and general-purpose, text-based protocol based on HTTP.
SIP can also be used to control Internet multimedia conferences, Internet telephone calls and multimedia distribution, in both the core and the periphery of the communications network.
To address the requirements of carrier-grade equipment manufacturers for SIP protocol software with high reliability, performance and scalability, Data Connection has developed a robust, high-function, flexible and portable SIP software implementation.
Source www.avaya.com
