SDP-based WebRTC data channel negotiation

Document Type Replaced Internet-Draft (individual)
Authors Richard Ejzak  , Jerome Marcon 
Last updated 2014-02-17 (latest revision 2013-10-13)
Replaced by draft-ejzak-mmusic-data-channel-sdpneg
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Real-Time Communication in WEB-browsers (RTCWeb) working group is charged to provide protocols to support direct interactive rich communication using audio, video, and data between two peers' web- browsers. For the support of data communication, the RTCWeb working group has in particular defined the concept of bi-directional data channels over SCTP, where each data channel might be used to transport other protocols, called sub-protocols. Data channel setup can be done using either the in-band WebRTC Data Channel protocol or some external (in-band or out-of-band) negotiation. This document specifies how the SDP offer/answer exchange can be used to achieve such an external negotiation.


Richard Ejzak (
Jerome Marcon (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)