[rfc-dist] RFC 9071 on RTP-Mixer Formatting of Multiparty Real-Time Text
rfc-editor@rfc-editor.org Tue, 06 July 2021 23:47 UTC
Return-Path: <rfc-dist-bounces@rfc-editor.org>
X-Original-To: ietfarch-rfc-dist-archive@ietfa.amsl.com
Delivered-To: ietfarch-rfc-dist-archive@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5875E3A0127 for <ietfarch-rfc-dist-archive@ietfa.amsl.com>; Tue, 6 Jul 2021 16:47:04 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.9
X-Spam-Level:
X-Spam-Status: No, score=-2.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, MAILING_LIST_MULTI=-1, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=unavailable autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id P5D6ug5ZSGYi for <ietfarch-rfc-dist-archive@ietfa.amsl.com>; Tue, 6 Jul 2021 16:46:59 -0700 (PDT)
Received: from rfc-editor.org (rfc-editor.org [4.31.198.49]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 544D93A0101 for <rfc-dist-archive-yuw6Xa6hiena@ietf.org>; Tue, 6 Jul 2021 16:46:58 -0700 (PDT)
Received: from rfcpa.amsl.com (localhost [IPv6:::1]) by rfc-editor.org (Postfix) with ESMTP id A4402F40725; Tue, 6 Jul 2021 16:46:28 -0700 (PDT)
X-Original-To: rfc-dist@rfc-editor.org
Delivered-To: rfc-dist@rfc-editor.org
Received: by rfc-editor.org (Postfix, from userid 30) id C0A2BF40722; Tue, 6 Jul 2021 16:46:26 -0700 (PDT)
To: ietf-announce@ietf.org, rfc-dist@rfc-editor.org
X-PHP-Originating-Script: 1005:ams_util_lib.php
From: rfc-editor@rfc-editor.org
Message-Id: <20210706234626.C0A2BF40722@rfc-editor.org>
Date: Tue, 06 Jul 2021 16:46:26 -0700
Subject: [rfc-dist] RFC 9071 on RTP-Mixer Formatting of Multiparty Real-Time Text
X-BeenThere: rfc-dist@rfc-editor.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: RFC Announcements <rfc-dist.rfc-editor.org>
List-Unsubscribe: <https://www.rfc-editor.org/mailman/options/rfc-dist>, <mailto:rfc-dist-request@rfc-editor.org?subject=unsubscribe>
List-Archive: <http://www.rfc-editor.org/pipermail/rfc-dist/>
List-Post: <mailto:rfc-dist@rfc-editor.org>
List-Help: <mailto:rfc-dist-request@rfc-editor.org?subject=help>
List-Subscribe: <https://www.rfc-editor.org/mailman/listinfo/rfc-dist>, <mailto:rfc-dist-request@rfc-editor.org?subject=subscribe>
Cc: drafts-update-ref@iana.org, avt@ietf.org, rfc-editor@rfc-editor.org
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Errors-To: rfc-dist-bounces@rfc-editor.org
Sender: rfc-dist <rfc-dist-bounces@rfc-editor.org>
A new Request for Comments is now available in online RFC libraries. RFC 9071 Title: RTP-Mixer Formatting of Multiparty Real-Time Text Author: G. Hellström Status: Standards Track Stream: IETF Date: July 2021 Mailbox: gunnar.hellstrom@ghaccess.se Pages: 35 Updates: RFC 4103 I-D Tag: draft-ietf-avtcore-multi-party-rtt-mix-20.txt URL: https://www.rfc-editor.org/info/rfc9071 DOI: 10.17487/RFC9071 This document provides enhancements of real-time text (as specified in RFC 4103) suitable for mixing in a centralized conference model, enabling 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 multiparty real-time text session. The specified mechanism builds on the standard use of the Contributing Source (CSRC) list in the Real-time Transport Protocol (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 RTP-mixer model was selected to be used for the fully specified solution in this document because it can be applied to a wide range of existing RTP implementations. A capability exchange is specified so that it can be verified that a mixer and a participant can handle the multiparty-coded real-time text stream using the RTP-mixer method. The capability is indicated by the use of a Session Description Protocol (SDP) (RFC 8866) media attribute, "rtt-mixer". This document updates RFC 4103 ("RTP Payload for Text Conversation"). A specification for how a mixer can format text for the case when the endpoint is not multiparty aware is also provided. This document is a product of the Audio/Video Transport Core Maintenance Working Group of the IETF. This is now a Proposed Standard. STANDARDS TRACK: This document specifies an Internet Standards Track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the Official Internet Protocol Standards (https://www.rfc-editor.org/standards) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC _______________________________________________ rfc-dist mailing list rfc-dist@rfc-editor.org https://www.rfc-editor.org/mailman/listinfo/rfc-dist http://www.rfc-editor.org