Session Initiation Protocol

What Does Session Initiation Protocol Mean?

Session Initiation Protocol (SIP) is a text-based signaling protocol that establishes Internet Protocol (IP) network sessions at the application layer. Signaling protocols are used for signaling encapsulation identification.

Techopedia Explains Session Initiation Protocol

SIP is used in applications ranging from Unicast Voice Over Internet Protocol (VoIP) calls to multistream or multimedia conferencing. SIP runs on User Datagram Protocol (UDP), Stream Control Transmission Protocol (SCTP) or Transmission Control Protocol (TCP).

SIP was accepted as a 3rd Generation Partnership Project (3GPP) signaling protocol in November 2000 and became a permanent component of IP Multimedia Subsystem (IMS), which is a mobile (cellular) multimedia streaming framework.

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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…

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