Re: [rtcweb] [MMUSIC] FW: New Version Notification for draft-holmberg-mmusic-sdp-multiplex-negotiation-00.txt

"Roni Even" <ron.even.tlv@gmail.com> Fri, 16 September 2011 12:52 UTC

Return-Path: <ron.even.tlv@gmail.com>
X-Original-To: rtcweb@ietfa.amsl.com
Delivered-To: rtcweb@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 12F0D21F8B8E; Fri, 16 Sep 2011 05:52:28 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -3.599
X-Spam-Level:
X-Spam-Status: No, score=-3.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_LOW=-1]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Wvo5jHeK0h77; Fri, 16 Sep 2011 05:52:27 -0700 (PDT)
Received: from mail-yx0-f172.google.com (mail-yx0-f172.google.com [209.85.213.172]) by ietfa.amsl.com (Postfix) with ESMTP id E032D21F8AF1; Fri, 16 Sep 2011 05:52:26 -0700 (PDT)
Received: by yxt33 with SMTP id 33so3378207yxt.31 for <multiple recipients>; Fri, 16 Sep 2011 05:54:41 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:to:references:in-reply-to:subject:date:message-id:mime-version :content-type:content-transfer-encoding:x-mailer:thread-index :content-language; bh=tzLC0RUNtF+Pd3NIvQAij5YFcFaFr34vVi+d4lxR+kM=; b=kulHoCT/KfYVdB5UwF6D9babXSBBukfXVfTc89V4h/IIze74E3bhgWFMQxNVJf75sJ OLn02+4+Hm+JIgwzmwwGLxZkHtW99TsBGq8W28qbX64qQuGTkr4EamseYI2+uKe5hJcf KQxoUR+vjzV1VECJAQHWQMcNqAmq7rCjQ3Pno=
Received: by 10.68.7.69 with SMTP id h5mr1264815pba.527.1316177680850; Fri, 16 Sep 2011 05:54:40 -0700 (PDT)
Received: from windows8d787f9 ([59.37.10.82]) by mx.google.com with ESMTPS id i1sm32939009pbe.1.2011.09.16.05.54.36 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 16 Sep 2011 05:54:39 -0700 (PDT)
From: "Roni Even" <ron.even.tlv@gmail.com>
To: "'Christer Holmberg'" <christer.holmberg@ericsson.com>, "'Muthu Arul Mozhi Perumal \(mperumal\)'" <mperumal@cisco.com>, <rtcweb@ietf.org>, "'IETF - MMUSIC'" <mmusic@ietf.org>
References: <7F2072F1E0DE894DA4B517B93C6A05852233EDB29F@ESESSCMS0356.eemea.ericsson.se> <1D062974A4845E4D8A343C6538049202066492D5@XMB-BGL-414.cisco.com> <7F2072F1E0DE894DA4B517B93C6A05852233F1E768@ESESSCMS0356.eemea.ericsson.se>
In-Reply-To: <7F2072F1E0DE894DA4B517B93C6A05852233F1E768@ESESSCMS0356.eemea.ericsson.se>
Date: Fri, 16 Sep 2011 15:53:15 +0300
Message-ID: <4e73470f.e113440a.6fe3.ffffa2bb@mx.google.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook 12.0
Thread-Index: Acxyyd6aOvfK+MMFTn6XQAfby+UjdAAASajQAGLLwtAAA5ebUAAClWrg
Content-Language: en-us
Subject: Re: [rtcweb] [MMUSIC] FW: New Version Notification for draft-holmberg-mmusic-sdp-multiplex-negotiation-00.txt
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Real-Time Communication in WEB-browsers working group list <rtcweb.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/rtcweb>
List-Post: <mailto:rtcweb@ietf.org>
List-Help: <mailto:rtcweb-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 16 Sep 2011 12:52:28 -0000

Hi,
I think that you MUST have unique payload type numbers in all m-lines.
As for parameters I am not sure what will be the outcome of the bandwidth if
they appear in both m-lines. Or for encryption parameters if you offer
SAVP/SAVPF.

BTW: This solution is not limited to RTCWEB, at least it does not say it is.

Regards
Roni Even 


> -----Original Message-----
> From: mmusic-bounces@ietf.org [mailto:mmusic-bounces@ietf.org] On
> Behalf Of Christer Holmberg
> Sent: Friday, September 16, 2011 2:36 PM
> To: Muthu Arul Mozhi Perumal (mperumal); rtcweb@ietf.org; IETF - MMUSIC
> Subject: Re: [MMUSIC] [rtcweb] FW: New Version Notification for draft-
> holmberg-mmusic-sdp-multiplex-negotiation-00.txt
> 
> 
> Hi Muthu,
> 
> You suggestion looks good, and I'll implement it in the next version of
> the draft.
> 
> Thanks!
> 
> Regards,
> 
> Christer
> 
> 
> > -----Original Message-----
> > From: Muthu Arul Mozhi Perumal (mperumal) [mailto:mperumal@cisco.com]
> > Sent: 16. syyskuuta 2011 14:26
> > To: Christer Holmberg; rtcweb@ietf.org; IETF - MMUSIC
> > Subject: RE: [rtcweb] FW: New Version Notification for
> > draft-holmberg-mmusic-sdp-multiplex-negotiation-00.txt
> >
> > The approach looks good overall. A quick comment on section
> > 5. SDP Offer/Answer Procedures:
> >
> > |When an SDP offerer wants to offer multiplexed media, it inserts the
> > |same port number value for each "m=" line that is part of
> > the offered
> > |multiplex.  In addition, the SDP offerer inserts an SDP
> > session-level
> > |"a=group" attribute, with a "MULTIPLEX" value, and assigns an SDP
> > |media-level "a=mid" attribute value for each "m=" line that
> > is part of
> > |the offered multiplex.
> >
> > Suggestion:
> >
> > An entity generating an SDP offer or answer describing
> > multiplexed media does the following:
> > 1. Inserts the same port number for each "m=" line that is part of
> >    the multiplex.
> > 2. Uses the same connection data ("c=" line) values for each media
> >    stream that is part of the multiplex.
> > 3. Inserts the same RTCP port number in the "a=rtcp" attribute for
> >    each media stream that is part of the multiplex, when the RTCP
> >    port is not the next higher (odd) port number following the RTP
> >    port described in the "m=" line.
> > 4. Inserts an "a=rtcp-mux" attribute for each media stream that is
> >    part of the multiplex, when RTCP is multiplexed with RTP on the
> >    same port.
> > 5. Inserts an SDP session-level "a=group" attribute, with a
> > "MULTIPLEX"
> >    value, and assigns an SDP media-level "a=mid" attribute value for
> >    each "m=" line that is part of the multiplex.
> >
> > Muthu
> >
> > |-----Original Message-----
> > |From: rtcweb-bounces@ietf.org [mailto:rtcweb-bounces@ietf.org] On
> > Behalf Of Christer Holmberg
> > |Sent: Wednesday, September 14, 2011 4:17 PM
> > |To: rtcweb@ietf.org
> > |Subject: [rtcweb] FW: New Version Notification for
> > draft-holmberg-mmusic-sdp-multiplex-negotiation-
> > |00.txt
> > |
> > |
> > |
> > |Hi,
> > |
> > |I've submitted a draft in MMUSIC, which defines a mechanism and
> > grouping framework extension in order
> > |to negotiate multiplexing of media associated with multiple m=
> lines.
> > |
> > |The main difference from Harald's previous proposal is that
> > it defines
> > the usage of the same port
> > |number value for multiple m= lines, and every m= line is used to
> > describe media even in the case of
> > |multiplex.
> > |
> > |Comments are welcome :)
> > |
> > |Regards,
> > |
> > |Christer
> > |
> > |
> > |
> > |
> > |> -----Original Message-----
> > |> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
> > |> Sent: 14. syyskuuta 2011 13:32
> > |> To: Christer Holmberg
> > |> Cc: Christer Holmberg
> > |> Subject: New Version Notification for
> > |> draft-holmberg-mmusic-sdp-multiplex-negotiation-00.txt
> > |>
> > |> A new version of I-D,
> > |> draft-holmberg-mmusic-sdp-multiplex-negotiation-00.txt has been
> > |> successfully submitted by Christer Holmberg and posted to the IETF
> > |> repository.
> > |>
> > |> Filename:	 draft-holmberg-mmusic-sdp-multiplex-negotiation
> > |> Revision:	 00
> > |> Title:		 Multiplexing Negotiation Using Session
> > |> Description Protocol (SDP) Port Numbers
> > |> Creation date:	 2011-09-14
> > |> WG ID:		 Individual Submission
> > |> Number of pages: 9
> > |>
> > |> Abstract:
> > |>    This document defines how to use the Session
> > Description Protocol
> > |>    (SDP) in order to negotiate the usage of multiplexed media.
> > |>
> > |>
> > |>
> > |>
> > |>
> > |> The IETF Secretariat
> > |>
> > |_______________________________________________
> > |rtcweb mailing list
> > |rtcweb@ietf.org
> > |https://www.ietf.org/mailman/listinfo/rtcweb
> >
> _______________________________________________
> mmusic mailing list
> mmusic@ietf.org
> https://www.ietf.org/mailman/listinfo/mmusic