The IESG has approved the following document: - 'RTP-mixer formatting of multiparty Real-time text' (draft-ietf-avtcore-multi-party-rtt-mix-20.txt) as Proposed Standard
This document is the product of the Audio/Video Transport Core Maintenance Working Group. The IESG contact persons are Murray Kucherawy and Francesca Palombini. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-avtcore-multi-party-rtt-mix/ Technical Summary: 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. Working Group Summary: WG Last Call of "RTP-mixer formatting of multi-party Real-time text" was announced on November 25, 2020: https://mailarchive.ietf.org/arch/msg/avt/tjGlWlXL5a54nhgl5nRV3jkD_tk/ WGLC concluded on December 9, 2020. Of the 6 participants responding to the WGLC, 3 supported Advancement to Proposed Standard, and 3 respondents provided comments, which were addressed by the author. Document Quality: There are no existing implementations of the specification. Personnel: Document Shepherd is Bernard Aboba. Responsible AD is Murray Kucherawy. _______________________________________________ IETF-Announce mailing list [email protected] https://www.ietf.org/mailman/listinfo/ietf-announce
