[AVTCORE] I-D Action: draft-ietf-avtcore-multi-party-rtt-mix-15.txt
internet-drafts@ietf.org Wed, 28 April 2021 11:37 UTC
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Subject: [AVTCORE] I-D Action: draft-ietf-avtcore-multi-party-rtt-mix-15.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Audio/Video Transport Core Maintenance WG of the IETF. Title : RTP-mixer formatting of multi-party Real-time text Author : Gunnar Hellstrom Filename : draft-ietf-avtcore-multi-party-rtt-mix-15.txt Pages : 45 Date : 2021-04-28 Abstract: Enhancements for RFC 4103 real-time text mixing are provided in this document, suitable for a centralized conference model that enables source identification and rapidly interleaved transmission of text from different sources. The intended use is for real-time text mixers and participant endpoints capable of providing an efficient presentation or other treatment of a multi-party real-time text session. The specified mechanism builds on the standard use of the CSRC list in the RTP packet for source identification. The method makes use of the same "text/t140" and "text/red" formats as for two- party sessions. Solutions using multiple RTP streams in the same RTP session are briefly mentioned, as they could have some benefits over the RTP- mixer model. The possibility to implement the solution in a wide range of existing RTP implementations made the RTP-mixer model be selected to be fully specified in this document. A capability exchange is specified so that it can be verified that a mixer and a participant can handle the multi-party coded real-time text stream using the RTP-mixer method. The capability is indicated by use of an SDP media attribute "rtt-mixer". The document updates RFC 4103 "RTP Payload for Text Conversation". A specification of how a mixer can format text for the case when the endpoint is not multi-party aware is also provided. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-avtcore-multi-party-rtt-mix/ There is also an HTML version available at: https://www.ietf.org/archive/id/draft-ietf-avtcore-multi-party-rtt-mix-15.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-avtcore-multi-party-rtt-mix-15 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/
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