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ALL ABOUT SIP PROTOCOL

Session Initial Protocol (SIP) is an Internet Engineering Task Force protocol for initiating an interactive user session that encompasses multimedia elements such as video, voice, chat, gaming, and virtual reality.

What is SIP?

Session Initial Protocol (SIP) is an Internet Engineering Task Force (IETF) standard protocol for initiating an interactive user session that encompasses multimedia elements such as video, voice, chat, gaming, and virtual reality. It help reduce PSTN line with this physical link. Further, it also tends to overcome issues related to scalability, maintenance and convergence.

What are its operation?

SIP is involved in the signaling portion of a media communication session, primarily used to set up and terminate voice or video calls. SIP connect can be used to establish two-party or multiparty communications. It also allows modification of existing calls. The modification can involve changing addresses or†ports, inviting more participants, and adding or deleting media streams. SIP has also found applications in messaging applications, such as instant messaging, event subscription and notification.

What are the Network Elements?

Network elements are the features of an SIP protocol which help run it efficiently. Lets learn about a few!

User Agent

A user agent is a logical network end-point used to create or receive SIP messages. The user agent manages SIP sessions. As a client (UAC), it sends SIP requests, and as a server (UAS) it receives requests and returns a SIP response.

SIP Phone

An SIP phone is a phone that implements clients and server functions of a SIP agent. SIP phone provides traditional calling features of a telephone like dial, answer, reject and call hold and call transfer.

Proxy Server

A proxy server works like a router. Its job is to ensure that a request is sent to another entity closer to the targeted user and also useful for enforcing policy. It is a network server with UAS and UAC components that functions as an intermediary entity.

Gateway

Gateway can be used to interconnect a SIP network to other networks.

Registrar

A registrar is a SIP endpoint provides a location service. It accepts REGISTER requests, recording the address and other parameters from the user agent.

An SIP service is provided by a lot of telecommunication providers. Also, to enhance their edge over the other market players, they keep adding features to the same. For any person or industry looking out for the same, make sure of scalability, convergence and maintenance. The flexibility in the services being provided along with the compatibility with Ethernet are also to watch out for.

Be sure of the service provider and you would get the best in class service.

Tags: SIP Protocol, SIP Connect, SIP Phone, SIP Trunk ConfigurationFree Reprint Articles, SIP Trunk

Source: Free Articles from ArticlesFactory.com

ABOUT THE AUTHOR


Nick Patel is freelance enthusiast and ingenious writer who enjoys the challenges of creativity attention to detail. In free time I like to write stories and Articles.



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