The IESG has approved the following document: - 'Miscellaneous Capabilities Negotiation in the Session Description Protocol (SDP)' (draft-ietf-mmusic-sdp-miscellaneous-caps-07.txt) as Proposed Standard This document is the product of the Multiparty Multimedia Session Control Working Group. The IESG contact persons are Gonzalo Camarillo and Richard Barnes. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-mmusic-sdp-miscellaneous-caps/ *Technical Summary* SDP has been extended with a capability negotiation mechanism based on SDP Offer/Answer, which allows endpoints to negotiate transport protocols, attributes as well additional media-related capabilities. This document extends the SDP capability negotiation framework to allow endpoints to negotiate three additional SDP capabilities. In particular, this document provides a mechanism to negotiate bandwidth ('b=' line), connection data ('c=' line), and titles ('i=' line for each session or media) in SDP. *Working Group Summary* The document was adopted as a WG item in March 2012 and is an external and long-standing dependency for 3GPP. The mechanisms in the document are fairly straightforward and did not receive a lot of discussion in the WG subsequently, and a WGLC was issued on the -02 version of the draft in October 2012. There were no major comments received but a chair review let to minor updates in the document resulting in the -04 version in March 2013. At this point, several people noted lack of clarity wrt potential overlap with ICE (RFC 5245) resulting in a somewhat controversial debate on the mailing list about what the WG had agreed to work on and timeliness of feedback on documents that had already been through WGLC. See threads in http://www.ietf.org/mail-archive/web/mmusic/current/msg10471.html http://www.ietf.org/mail-archive/web/mmusic/current/msg10573.html The chairs and document authors have subsequently worked to address the concerns. While there has been limited explicit feedback on the current wording, we have requested feedback several times, and lastly in http://www.ietf.org/mail-archive/web/mmusic/current/msg10962.html which resulted in no further comments received. Consequently, we believe all concerns have been addressed at this point. *Document Quality* There are currently no known implementations of the draft, however the draft is a dependency for 3GPP, so future implementations are expected. Earlier versions of the draft have been reviewed by a couple of WG participants and the document shepherd has reviewed the last several versions in detail. As noted above, the connection data capability part of the document has received detailed feedback more recently as well. The major contributors to these as well as earlier discussions are listed in the Acknowledgements section of the document. *Personnel* Document Shepherd: Flemming Andreasen Responsible AD: Gonzalo Camarillo
