Re: [AVTCORE] I-D Action: draft-ietf-avtcore-multi-party-rtt-mix-10.txt
Gunnar Hellström <gunnar.hellstrom@ghaccess.se> Wed, 18 November 2020 22:26 UTC
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From: Gunnar Hellström <gunnar.hellstrom@ghaccess.se>
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Date: Wed, 18 Nov 2020 23:26:43 +0100
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Subject: Re: [AVTCORE] I-D Action: draft-ietf-avtcore-multi-party-rtt-mix-10.txt
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A new version is available with changes according to answers to comments by Brian Nov 3 2020. The main technical change is a more effective interleaving of packets from different sources. To be discussed in the Avtcore session soon. Regards Gunnar Den 2020-11-18 kl. 23:22, skrev internet-drafts@ietf.org: > 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-10.txt > Pages : 40 > Date : 2020-11-18 > > Abstract: > Real-time text mixers for multi-party sessions need to identify the > source of each transmitted group of text so that the text can be > presented by endpoints in suitable grouping with other text from the > same source, while new text from other sources is also presented in > readable grouping as received interleaved in real-time. > > Regional regulatory requirements specify provision of real-time text > in multi-party calls. RFC 4103 mixer implementations can use > traditional RTP functions for source identification, but the mixer > source switching performance is limited when using the default > transmission characteristics with redundancy. > > Enhancements for RFC 4103 real-time text mixing is provided in this > document, suitable for a centralized conference model that enables > source identification and source switching. The intended use is for > real-time text mixers and multi-party-aware participant endpoints. > The specified mechanism build 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. > > A capability exchange is specified so that it can be verified that a > participant can handle the multi-party coded real-time text stream. > The capability is indicated by use of a media attribute "rtt-mixer". > > The document updates RFC 4103[RFC4103] > > A specifications 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-10.html > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=draft-ietf-avtcore-multi-party-rtt-mix-10 > > > 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/ > > > _______________________________________________ > Audio/Video Transport Core Maintenance > avt@ietf.org > https://www.ietf.org/mailman/listinfo/avt -- Gunnar Hellström GHAccess gunnar.hellstrom@ghaccess.se
- [AVTCORE] I-D Action: draft-ietf-avtcore-multi-pa… internet-drafts
- Re: [AVTCORE] I-D Action: draft-ietf-avtcore-mult… Gunnar Hellström
- Re: [AVTCORE] I-D Action: draft-ietf-avtcore-mult… Gunnar Hellström