%% You should probably cite rfc8843 instead of this I-D. @techreport{ietf-mmusic-sdp-bundle-negotiation-48, number = {draft-ietf-mmusic-sdp-bundle-negotiation-48}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-mmusic-sdp-bundle-negotiation/48/}, author = {Christer Holmberg and Harald T. Alvestrand and Cullen Fluffy Jennings}, title = {{Negotiating Media Multiplexing Using the Session Description Protocol (SDP)}}, pagetotal = 67, year = 2018, month = jan, day = 31, abstract = {This specification defines a new Session Description Protocol (SDP) Grouping Framework extension, 'BUNDLE'. The extension can be used with the SDP Offer/Answer mechanism to negotiate the usage of a single transport (5-tuple) for sending and receiving media described by multiple SDP media descriptions ("m=" sections). Such transport is referred to as a BUNDLE transport, and the media is referred to as bundled media. The "m=" sections that use the BUNDLE transport form a BUNDLE group. This specification updates RFC 3264, to allow assigning a zero port value to a "m=" section without meaning that the media described by the "m=" section is disabled or rejected. This specification defines a new RTP Control Protocol (RTCP) source description (SDES) item and a new RTP header extension that van be used to correlate bundled RTP/RTCP packets with their appropriate "m=" section.}, }