[AVTCORE] Fwd: I-D Action: draft-hellstrom-avtcore-multi-party-rtt-solutions-05.txt

Gunnar Hellström <gunnar.hellstrom@ghaccess.se> Thu, 19 November 2020 15:34 UTC

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Subject: [AVTCORE] Fwd: I-D Action: draft-hellstrom-avtcore-multi-party-rtt-solutions-05.txt
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draft-hellstrom-avtcore-multi-party-rtt-solutions-05 is submitted,

providing background information for multi-party real-time text.

It is aligned with the progress and new method for packet interleaving 
introduced in draft-ietf-avtcore-multi-party-rtt-mix-10

Regards

Gunnar



-------- Vidarebefordrat meddelande --------
Ämne: 	I-D Action: draft-hellstrom-avtcore-multi-party-rtt-solutions-05.txt
Datum: 	Thu, 19 Nov 2020 07:28:44 -0800
Från: 	internet-drafts@ietf.org
Svar till: 	internet-drafts@ietf.org
Till: 	i-d-announce@ietf.org




A New Internet-Draft is available from the on-line Internet-Drafts 
directories.


Title : Real-time text solutions for multi-party sessions
Author : Gunnar Hellstrom
Filename : draft-hellstrom-avtcore-multi-party-rtt-solutions-05.txt
Pages : 45
Date : 2020-11-19

Abstract:
This document specifies methods for Real-Time Text (RTT) media
handling in multi-party calls. The main discussed transport is to
carry Real-Time text by the RTP protocol in a time-sampled mode
according to RFC 4103. The mechanisms enable the receiving
application to present the received real-time text media, separated
per source, in different ways according to user preferences. Some
presentation related features are also described explaining suitable
variations of transmission and presentation of text.

Call control features are described for the SIP environment. A
number of alternative methods for providing the multi-party
negotiation, transmission and presentation are discussed and a
recommendation for the main ones is provided. The main solution for
SIP based centralized multi-party handling of real-time text is
achieved through a media control unit coordinating multiple RTP text
streams into one RTP stream.

Alternative methods using a single RTP stream and source
identification inline in the text stream are also described, one of
them being provided as a lower functionality fallback method for
endpoints with no multi-party awareness for RTT.

Bridging methods where the text stream is carried without the
contents being dealt with in detail by the bridge are also discussed.

Brief information is also provided for multi-party RTT in the WebRTC
environment.

The intention is to provide background for decisions, specification
and implementation of selected methods.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-hellstrom-avtcore-multi-party-rtt-solutions/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-hellstrom-avtcore-multi-party-rtt-solutions-05.html

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-hellstrom-avtcore-multi-party-rtt-solutions-05


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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