Connection Establishment for Media Anchoring (CEMA) for the Message Session Relay Protocol (MSRP)

Document Type Replaced Internet-Draft (simple WG)
Last updated 2015-10-14 (latest revision 2011-06-16)
Replaces draft-holmberg-simple-msrp-sessmatch
Replaced by draft-ietf-simple-msrp-cema
Stream IETF
Intended RFC status Proposed Standard
Expired & archived
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Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-simple-msrp-cema
Consensus Boilerplate Unknown
Telechat date
Responsible AD Gonzalo Camarillo
IESG note Hisham Khartabil ( is the document shepherd.
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines an MSRP extension, Connection Establishment for Media Anchoring (CEMA). Support of the extension is optional. MSRP endpoints can implement the extension in order to allow MSRP communication in networks where Middleboxes anchor the MSRP connection, without the need for the Middleboxes to enable MSRP B2BUA functionality in most cases. The document also defines a Session Description Protocol (SDP) [RFC4566] attribute, a=msrp-cema, that can be used by MSRP endpoints to indicate support of the CEMA extension.


Christer Holmberg (
Staffan Blau (

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