SDP: Session Description Protocol

This RFC 2327 was published in 1998.


This document defines the Session Description Protocol, SDP.
SDP is intended for describing multimedia sessions for the purposes of session announcement, session invitation, and other forms of multimedia session initiation.

RFC 2327 introduction

On the Internet multicast backbone (Mbone), a session directory tool is used to advertise multimedia conferences and communicate the conference addresses and conference tool-specific information necessary for participation.
This document defines a session description protocol for this purpose, and for general real-time multimedia session description purposes.
This memo does not describe multicast address allocation or the distribution of SDP messages in detail.
These are described in accompanying memos.
SDP is not intended for negotiation of media encodings.

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