RFC 8866 · PROPOSED STANDARD · 2021
SUN · 14 JUN 2026
SDP: Session Description Protocol
Overview
RFC 8866, “SDP: Session Description Protocol”, is a Proposed Standard document published in January 2021 by A. Begen, P. Kyzivat, C. Perkins, M. Handley. It obsoletes RFC 4566. 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. This document obsoletes RFC 4566.
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 8866 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
Relationships to other RFCs
Other RFCs from 2021
- RFC 8865 T.140 Real-Time Text Conversation over WebRTC Data Channels
- RFC 8867 Test Cases for Evaluating Congestion Control for Interactive Real- Time Media
- RFC 8864 Negotiation Data Channels Using the Session Description Protocol
- RFC 8868 Evaluating Congestion Control for Interactive Real-Time Media
- RFC 8863 Interactive Connectivity Establishment Patiently Awaiting Connectivity
- RFC 8869 Evaluation Test Cases for Interactive Real-Time Media over Wireless Networks
- RFC 8862 Best Practices for Securing RTP Media Signaled with SIP
- RFC 8870 Encrypted Key Transport for DTLS and Secure RTP