RFC 4566 · PROPOSED STANDARD · 2006

SDP: Session Description Protocol

Overview

RFC 4566, “SDP: Session Description Protocol”, is a Proposed Standard document published in July 2006 by M. Handley, V. Jacobson, C. Perkins. It obsoletes RFC 2327, RFC 3266. It has been obsoleted by RFC 8866 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.

Abstract

This memo 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. [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 4566 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC obsoletes
RFC 2327 RFC 3266
Obsoleted by
RFC 8866
Other RFCs from 2006

Who Is Online

In total there are 81 users online: 0 registered, 76 guests and 5 bots.

Most users ever online was 1,226 on 13 Jun 2026, 3:56 am.

Bots: AhrefsBot Applebot Googlebot Other Bot SemrushBot

Users active in the past 15 minutes. Total registered members: 354