Definition

SDP (Session Description Protocol)

SDP (Session Description Protocol) is a set of rules that defines how multimedia sessions can be set up to allow all end points to effectively participate in the session. In this context, a session consists of a set of communications end points along with a series of interactions among them. The session is initiated when the connection is first established and is terminated when the all of the end points have stopped participating. An example is a videoconference conducted by a large corporation that includes participants from multiple departments in diverse geographic locations.

In SDP, session parameters include information such as the session name, the date and time at which the session is scheduled to begin, the purpose of the session, the addresses or ports of all end points, the data formats to be used and the bandwidth requirements for effectively exchanging the session data. SDP is intended primarily for use in large WANs (wide-area networks) including the Internet. As such, it is designed to function in a many-to-many environment. Nevertheless, SDP can also be employed in proprietary LANs (local area networks) and MANs (metropolitan area networks).

This was last updated in March 2008

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Hi margott,

can you tell me how this SDP is related to SIP ?
i want to know more that what kind of media files can we share in the session description protocol?
i read only about sharing of audio files and video files here,

Please let me know what other files we can share in this session of streaming media?
thanks it was my nice experience with this article.
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