From mailnull@www1.ietf.org Thu May 1 00:58:22 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id AAA06957 for ; Thu, 1 May 2003 00:58:22 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4154FR10353 for mmusic-archive@odin.ietf.org; Thu, 1 May 2003 01:04:15 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4154F810350 for ; Thu, 1 May 2003 01:04:15 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id AAA06954 for ; Thu, 1 May 2003 00:57:52 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19B6At-00064q-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 01:00:03 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19B6At-00064k-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 01:00:03 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4153r810316; Thu, 1 May 2003 01:03:53 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4150A810181 for ; Thu, 1 May 2003 01:00:10 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id AAA06914; Thu, 1 May 2003 00:53:32 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19B66h-00063y-00; Thu, 01 May 2003 00:55:43 -0400 Received: from tog-wakko2.prognet.com ([207.188.29.249] helo=virago) by ietf-mx with esmtp (Exim 4.12) id 19B66b-00063n-00; Thu, 01 May 2003 00:55:38 -0400 Received: from tommy by virago with local (Exim 3.36 #1 (Debian)) id 19B66k-000216-00; Wed, 30 Apr 2003 21:55:46 -0700 Date: Wed, 30 Apr 2003 21:55:46 -0700 From: Tom Marshall To: Jonathan Rosenberg Cc: philippe.gentric@philips.com, Thomas Zeng , Aaron Colwell , "'Magnus Westerlund'" , IETF MMUSIC WG , mmusic-admin@ietf.org Subject: Re: [MMUSIC] draft-ietf-mmusic-rtsp-nat-00.txt questions Message-ID: <20030501045546.GA7698@real.com> References: <20030430155841.GA5361@real.com> <3EB03636.8050805@dynamicsoft.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="5mCyUwZo2JvN/JJP" Content-Disposition: inline In-Reply-To: <3EB03636.8050805@dynamicsoft.com> User-Agent: Mutt/1.5.3i Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , --5mCyUwZo2JvN/JJP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > >>Its an issue of - why are you inventing yet another thing when we=20 > >>already have something on the table? > > > > > >I can think of two reasons: > > > >1. The technique is already in use, and has been proven successful. We > >are > > trying to document that technique. >=20 > IETF proposed standards are not about documenting existing technique.=20 > They are about proposing the right solution for all to implement. Very well, perhaps I did not choose the proper wording. My apologies. I have been reluctant to refer to symmetric rtp as a protocol because it's extremely simple. I think of it as a technique rather than a protocol. I believe that it is a simple, elegant and comprehensive solution to the NAT traversal problem for RTSP/RTP. I would stop short of calling it "the" right solution because real world scenarios inevitably prevent such a definition. > >2. It has advantages over STUN. It is more successful than > >nonmultiplexed > > STUN (eg. with 5-tuple NATs) and it does not require any protocol > > multiplexing to achieve maximum usefulness (it's a cleaner solution). >=20 > The only argument you are making here is that multiplexing is ugly. To=20 > that I agree. But, if you want these fake RTP packets to not affect=20 > RTCP, you are already basically saying that you are multiplexing a=20 > non-RTP protocol on the RTP port. So I dont see the difference really. First, let me state that my argument in the quoted message was not comprehensive. There are many arguments to be made for symmetric rtp and multiplexing is only one. Just off the top of my head, another advantage that symmetric rtp holds over stun is that the destination=3D parameter remains free for application use. > >I can see where STUN may have uses for protocols other than RTP, and > >that is > >fine. But to imply that STUN is the one grand solution and we shouldn't > >pursue symmetric rtp is, in my opinion, a mistake. > > >=20 > Well, as is pointed out in my ICE proposal: > http://www.ietf.org/internet-drafts/draft-rosenberg-sipping-ice-00.txt >=20 > The general approach solves a ton more cases than symmetric RTP alone=20 > will. If you ever think that you will want RTSP in peer-to-peer cases,=20 > symmetric RTP isnt going to cut it. I somehow doubt your claim. I can think of at least one case where symmetric rtp will work where stun will not (yes, even multiplexed stun).= =20 In any case, "a ton" is a rather subjective number. Are you advocating that symmetric rtp be abandoned entirely and that we should all align behind stun as the single all-encompassing solution? If you are, I have a serious issue with that stance. I can see why you might have that opinion given your co-authorship with rfc3489, but I strongly encourage you to evaluate each solution on its technical merits. The technique (or protocol, if yop prefer) behind symmetric rtp has been proven to be quite effective, both in theory and in practice. --=20 Mountain Dew and doughnuts... because breakfast is the most important meal of the day. --5mCyUwZo2JvN/JJP Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQE+sKjSqznSmcYu2m8RAqf7AJ92mmHBUzhjQwQKkD3aUtgoTgQaDACeOHjK ukk6lcGq7w+nMsqSZpgsalI= =POv2 -----END PGP SIGNATURE----- --5mCyUwZo2JvN/JJP-- _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 1 04:08:10 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA01911 for ; Thu, 1 May 2003 04:08:10 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h418E6201530 for mmusic-archive@odin.ietf.org; Thu, 1 May 2003 04:14:06 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h418E6801527 for ; Thu, 1 May 2003 04:14:06 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA01903 for ; Thu, 1 May 2003 04:07:40 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19B98Y-0007FT-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 04:09:50 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19B98Y-0007FM-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 04:09:50 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h418Dv801510; Thu, 1 May 2003 04:13:57 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4189X801382 for ; Thu, 1 May 2003 04:09:33 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA01835; Thu, 1 May 2003 04:02:22 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19B93R-0007Dy-00; Thu, 01 May 2003 04:04:33 -0400 Received: from [63.113.44.69] (helo=mail3.dynamicsoft.com) by ietf-mx with esmtp (Exim 4.12) id 19B93L-0007Ds-00; Thu, 01 May 2003 04:04:27 -0400 Received: from dynamicsoft.com ([63.113.46.67]) by mail3.dynamicsoft.com (8.12.8/8.12.1) with ESMTP id h4184Idh004816; Thu, 1 May 2003 04:04:19 -0400 (EDT) Message-ID: <3EB0D4FF.9010003@dynamicsoft.com> Date: Thu, 01 May 2003 04:04:15 -0400 From: Jonathan Rosenberg Organization: dynamicsoft User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3) Gecko/20030312 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Tom Marshall CC: philippe.gentric@philips.com, Thomas Zeng , Aaron Colwell , "'Magnus Westerlund'" , IETF MMUSIC WG , mmusic-admin@ietf.org Subject: Re: [MMUSIC] draft-ietf-mmusic-rtsp-nat-00.txt questions References: <20030501045546.GA7698@real.com> In-Reply-To: <20030501045546.GA7698@real.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Tom Marshall wrote: >>>2. It has advantages over STUN. It is more successful than >>>nonmultiplexed >>> STUN (eg. with 5-tuple NATs) and it does not require any protocol >>> multiplexing to achieve maximum usefulness (it's a cleaner > > solution). > >>The only argument you are making here is that multiplexing is ugly. To > > >>that I agree. But, if you want these fake RTP packets to not affect >>RTCP, you are already basically saying that you are multiplexing a >>non-RTP protocol on the RTP port. So I dont see the difference really. > > > First, let me state that my argument in the quoted message was not > comprehensive. There are many arguments to be made for symmetric rtp > and > multiplexing is only one. Just off the top of my head, another > advantage > that symmetric rtp holds over stun is that the destination= parameter > remains free for application use. I'm not sure what this means. I agree that with symmetric RTP you don't specify an IP address to receive RTP, and with peer-to-peer stun you will, but I don't see this as a +/- in either direction. > > >>>I can see where STUN may have uses for protocols other than RTP, and >>>that is >>>fine. But to imply that STUN is the one grand solution and we > > shouldn't > >>>pursue symmetric rtp is, in my opinion, a mistake. >>> >> >>Well, as is pointed out in my ICE proposal: >>http://www.ietf.org/internet-drafts/draft-rosenberg-sipping-ice-00.txt >> >>The general approach solves a ton more cases than symmetric RTP alone >>will. If you ever think that you will want RTSP in peer-to-peer cases, > > >>symmetric RTP isnt going to cut it. > > > I somehow doubt your claim. I can think of at least one case where > symmetric rtp will work where stun will not (yes, even multiplexed > stun). Please elaborate. > In any case, "a ton" is a rather subjective number. Well, here are a few cases I know of where symmetric RTP will not work: 1. client and server both behind different nats, both are port restricted 2. client and server are both behind different nats, both are symmetric nat 3. client is in a public IP network, server is behind a nat 4. client and server are both in private networks, but there is a nat between the server and the client (multi-natted enterprise, for example) None of these scenarios come up in the normal RTSP case where the server is on a public network. They arise in more peer-to-peer applications of RTSP, more common when used in conjunction with sip I suspect. > > Are you advocating that symmetric rtp be abandoned entirely and that we > should all align behind stun as the single all-encompassing solution? My main interest is in trying to unify the nat traversal strategies for SIP and RTSP. There, it appears that ICE is the best way forward, and one component of that is the usage of peer-to-peer stun to verify connectivity. In the SIP case, there is just no need for symmetric RTP, since its function is encompassed within the ICE algorithm. The set of nat traversal cases for ICE is a superset of those covered by symmetric RTP. I am fairly sure I can prove that, but I would love to hear about this case you say works for symmetric RTP but not peer-to-peer STUN within an ICE context. I have also recently discovered that the ICE methodology solves a very hard DoS attack which has been discussed in this context. The general problem is that a client connects to a server, and provides the server with a fake IP address/port to which media should be sent. This fake address/port is the address of the target. In the case of the symmetric RTP approach, this is done by having the client send RTP packets to the server using a spoofed source address. Generally speaking, the way to prevent DoS attacks when amplification is a natural property of the protocol (as it is here), is to make sure you only send stuff to places that want it. With ICE, the server would immediately send a STUN request to the client to verify connectivity. The server would not actually send media unless a STUN response was received. Effectively, the connectivity check performed by stun has a side effect of verifying that the recipient WANTS the media. So, if the recipient of the STUN request is the target of a DoS attack, they wouldn't send a STUN response at all and therefore, no media is ever sent to them. You could use RTCP for a similar kind of function, but its timescales are too large to be really effective at preventign this attack, IMHO. > If > you are, I have a serious issue with that stance. I can see why you > might > have that opinion given your co-authorship with rfc3489, but I strongly > encourage you to evaluate each solution on its technical merits. These kinds of personal accusations about do nothing to progress a discussion, Tom. Please, can we keep the discussion civil? I have done nothing but argue for things based on technical merits. I have been working on the problems of firewall and nat traversal for multimedia for many years, and my conclusions on the applicability of symmetric RTP vs. ICE/p2p stun are based on real issues (like the cases above) that I have seen arise. The > technique (or protocol, if yop prefer) behind symmetric rtp has been > proven > to be quite effective, both in theory and in practice. No doubt. It was added to the co-media spec at the urging of myself and others quite some time ago. I agree it works, and it works very well in cases where one side is always on a network reachable by the other. But, that case is not all cases, and the double nat cases are not handled by symmetric RTP. -Jonathan R. -- Jonathan D. Rosenberg, Ph.D. 600 Lanidex Plaza Chief Scientist Parsippany, NJ 07054-2711 dynamicsoft jdrosen@dynamicsoft.com FAX: (973) 952-5050 http://www.jdrosen.net PHONE: (973) 952-5000 http://www.dynamicsoft.com _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 1 10:18:19 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA12780 for ; Thu, 1 May 2003 10:18:18 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h41EOM308391 for mmusic-archive@odin.ietf.org; Thu, 1 May 2003 10:24:22 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h41EOM808388 for ; Thu, 1 May 2003 10:24:22 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA12728 for ; Thu, 1 May 2003 10:17:48 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BEuk-0001nm-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 10:19:58 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19BEuj-0001nf-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 10:19:57 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h41EOA808242; Thu, 1 May 2003 10:24:10 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h41EIx807950 for ; Thu, 1 May 2003 10:18:59 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA12034 for ; Thu, 1 May 2003 10:12:25 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BEpX-0001kt-00 for mmusic@ietf.org; Thu, 01 May 2003 10:14:36 -0400 Received: from sj-core-1.cisco.com ([171.71.177.237]) by ietf-mx with esmtp (Exim 4.12) id 19BEpS-0001io-00 for mmusic@ietf.org; Thu, 01 May 2003 10:14:30 -0400 Received: from RKUMAR-W2K.cisco.com (sjc-vpn1-599.cisco.com [10.21.98.87]) by sj-core-1.cisco.com (8.12.6/8.12.6) with ESMTP id h41EBoLs008018; Thu, 1 May 2003 07:11:50 -0700 (PDT) Message-Id: <4.3.2.7.2.20030501070643.0177b498@mira-sjc5-8.cisco.com> X-Sender: rkumar@mira-sjc5-8.cisco.com X-Mailer: QUALCOMM Windows Eudora Version 4.3.2 Date: Thu, 01 May 2003 07:11:49 -0700 To: Jonathan Rosenberg From: Rajesh Kumar Subject: Re: [MMUSIC] Re: Multiple 'm' lines with the same port number Cc: Flemming Andreasen , Stephen Casner , Colin Perkins , mmusic@ietf.org, mmostafa@cisco.com, hisham@cisco.com, mgarakan@cisco.com, paulej@cisco.com In-Reply-To: <3EADB4FD.3090303@dynamicsoft.com> References: <3EA99D0B.E44A6EF3@cisco.com> <20030425114849.X77830-100000@ash.packetdesign.com> <3EA99D0B.E44A6EF3@cisco.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , At 07:10 PM 4/28/2003 -0400, Jonathan Rosenberg wrote: >Using two m lines to represent alternate encodings for a stream is not >consistent with the offer/answer model, IMHO. RFC 3264 has mechanisms for >transitioning from audio to fax, for example, but these require a >re-invite to do: > >8.3.3 Changing Media Types > > The media type (audio, video, etc.) for a stream MAY be changed. It > is RECOMMENDED that the media type be changed (as opposed to adding a > new stream), when the same logical data is being conveyed, but just > in a different media format. This is particularly useful for > changing between voiceband fax and fax in a single stream, which are > both separate media types. To do this, the offerer creates a new > media description, with a new media type, in place of the description > in the previous SDP which is to be changed. How about the use of capability sets as described in RFC 3407? The alternate encodings which may be triggered on specific stimuli can be expressed as latent capabilities, as in the examples inRFC 3407. Perhaps, the offer-answer model, RFC 3264, needs to be expanded to include the use of latent capabilities. Rajesh _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 1 11:02:05 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA15524 for ; Thu, 1 May 2003 11:02:05 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h41F8AU19060 for mmusic-archive@odin.ietf.org; Thu, 1 May 2003 11:08:10 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h41F89819057 for ; Thu, 1 May 2003 11:08:09 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA15485 for ; Thu, 1 May 2003 11:01:14 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BFan-0002PS-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 11:03:25 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19BFam-0002PO-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 11:03:24 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h41F7P818519; Thu, 1 May 2003 11:07:25 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h41Enj814999 for ; Thu, 1 May 2003 10:49:45 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA14512; Thu, 1 May 2003 10:43:10 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BFJJ-0002AU-00; Thu, 01 May 2003 10:45:21 -0400 Received: from tog-wakko2.prognet.com ([207.188.29.249] helo=virago) by ietf-mx with esmtp (Exim 4.12) id 19BFJD-00027o-00; Thu, 01 May 2003 10:45:15 -0400 Received: from tommy by virago with local (Exim 3.36 #1 (Debian)) id 19BFHK-0002Kv-00; Thu, 01 May 2003 07:43:18 -0700 Date: Thu, 1 May 2003 07:43:18 -0700 From: Tom Marshall To: Jonathan Rosenberg Cc: philippe.gentric@philips.com, Thomas Zeng , Aaron Colwell , "'Magnus Westerlund'" , IETF MMUSIC WG , mmusic-admin@ietf.org Subject: Re: [MMUSIC] draft-ietf-mmusic-rtsp-nat-00.txt questions Message-ID: <20030501144318.GA8252@real.com> References: <20030501045546.GA7698@real.com> <3EB0D4FF.9010003@dynamicsoft.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="UugvWAfsgieZRqgk" Content-Disposition: inline In-Reply-To: <3EB0D4FF.9010003@dynamicsoft.com> User-Agent: Mutt/1.5.3i Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , --UugvWAfsgieZRqgk Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > >>that I agree. But, if you want these fake RTP packets to not affect=20 > >>RTCP, you are already basically saying that you are multiplexing a=20 > >>non-RTP protocol on the RTP port. So I dont see the difference really. > > > > > >First, let me state that my argument in the quoted message was not > >comprehensive. There are many arguments to be made for symmetric rtp > >and > >multiplexing is only one. Just off the top of my head, another > >advantage > >that symmetric rtp holds over stun is that the destination=3D parameter > >remains free for application use. >=20 > I'm not sure what this means. I agree that with symmetric RTP you don't= =20 > specify an IP address to receive RTP, and with peer-to-peer stun you=20 > will, but I don't see this as a +/- in either direction. I see it as an advantage for symmetric rtp. The original RTSP specification was written with no NAT traversal strategies in mind, AFAIK. The destination parameter was meant for other purposes. I don't know of any practical application off the top of my head, but I must assume that at least one exists. Any such application is incompatible with STUN. > >>>I can see where STUN may have uses for protocols other than RTP, and > >>>that is > >>>fine. But to imply that STUN is the one grand solution and we > > > >shouldn't > > > >>>pursue symmetric rtp is, in my opinion, a mistake. > >>> > >> > >>Well, as is pointed out in my ICE proposal: > >>http://www.ietf.org/internet-drafts/draft-rosenberg-sipping-ice-00.txt > >> > >>The general approach solves a ton more cases than symmetric RTP alone= =20 > >>will. If you ever think that you will want RTSP in peer-to-peer cases, > > > > > >>symmetric RTP isnt going to cut it. > > > > > >I somehow doubt your claim. I can think of at least one case where > >symmetric rtp will work where stun will not (yes, even multiplexed > >stun).=20 >=20 > Please elaborate. Aside from the case pointed out above regarding the availability of the destination parameter, there is also the case where a network administrator prohibits the destination parameter from passing through the firewall. Given the refusal of many administrators to allow _any_ UDP at all, I think this case will have at least some practical application. > >In any case, "a ton" is a rather subjective number. >=20 > Well, here are a few cases I know of where symmetric RTP will not work: >=20 > 1. client and server both behind different nats, both are port restricted Yes, nonmultiplexed stun works nicely here. > 2. client and server are both behind different nats, both are symmetric n= at I don't see how any solution could be successful if the symmetric nat is of the 5-tuple kind. > 3. client is in a public IP network, server is behind a nat I am assuming that in this case, the server is the STUN client and the application is some sort of peer-to-peer scenario (because I find it unlikely that a "traditional" RTSP server would have STUN client code). The problem for RTP is that it flows from server to client. The server's NAT should have no problem sending RTP but it will appear to originate from a different port than specified in the SETUP response. This may or may not be a problem, depending on how strict the client's receive code is written.= =20 There are enough "traditional" cases where RTP packets come from a different source than expected that our code does not check the transport packet source address. RTCP will be a bigger problem because the server will not receive the client's packets. But since we are assuming that the server is a STUN client in this scenario, let's also assume that the client is a symmetric rtp client. I think both would work equally well here. > 4. client and server are both in private networks, but there is a nat=20 > between the server and the client (multi-natted enterprise, for example) I don't think this is really a separate case. It's just a smaller case of a nat on a network. > >Are you advocating that symmetric rtp be abandoned entirely and that we > >should all align behind stun as the single all-encompassing solution? >=20 > My main interest is in trying to unify the nat traversal strategies for= =20 > SIP and RTSP. I am sorry, but I don't see why this is a requirement. SIP and RTSP serve different purposes for different audiences. Why do you want to force them to use the same NAT strategy? > I have also recently discovered that the ICE methodology solves a very=20 > hard DoS attack which has been discussed in this context. The general=20 > problem is that a client connects to a server, and provides the server=20 > with a fake IP address/port to which media should be sent. This fake=20 > address/port is the address of the target. In the case of the symmetric= =20 > RTP approach, this is done by having the client send RTP packets to the= =20 > server using a spoofed source address. This DoS is exactly one of the reasons why I like symmetric rtp. There is no destination parameter. But you do bring up a good point: a responsible symmetric rtp application should ignore packets that have a different source address from the RTSP connection. I have yet to read the ICE proposal, so I can't comment much further. I will read it today. > >If > >you are, I have a serious issue with that stance. I can see why you > >might > >have that opinion given your co-authorship with rfc3489, but I strongly > >encourage you to evaluate each solution on its technical merits.=20 >=20 > These kinds of personal accusations about do nothing to progress a=20 > discussion, Tom. Please, can we keep the discussion civil? I have done=20 > nothing but argue for things based on technical merits. I have been=20 > working on the problems of firewall and nat traversal for multimedia for= =20 > many years, and my conclusions on the applicability of symmetric RTP vs.= =20 > ICE/p2p stun are based on real issues (like the cases above) that I have= =20 > seen arise. Sorry. But it seems that you take every opportunity to cut down everything but STUN. You were the one who "ranted" that ALGs are problematic on 2 Apr= =2E=20 This is certainly true (what real-world solution is ever bug-free?) but they are a necessary part of NAT. STUN is certainly a clever solution for some use cases but it is not an all-encompassing solution. It has its place, and so does symmetric rtp, and so do ALGs. NAT is a complicated beast with many different implementations, and so our traversal mechanisms must be flexible= =2E=20 Any one protocol or technique can never work in all scenarios. Again, are you advocating that symmetric rtp be abandoned entirely and that we should all align behind STUN as the single all-encompassing solution? If not, then this discussion is probably at a good stopping point. My interest here was answering the question regarding why there are multiple NAT traversal strategies, and I think that question has been answered. > the double nat cases are not handled by symmetric RTP. My initial reaction is that they are. Why would symmetric rtp fail with a double nat? --=20 Beware of Programmers who carry screwdrivers. -- Leonard Brandwein --UugvWAfsgieZRqgk Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQE+sTKGqznSmcYu2m8RAueHAJ92ctRBPIQUKx3Fz0RlFcJoqSPFOACfZHti wOEQSUfEwdGCWehfcCgC3Qc= =3Vx7 -----END PGP SIGNATURE----- --UugvWAfsgieZRqgk-- _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 1 22:01:29 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id WAA21763 for ; Thu, 1 May 2003 22:01:29 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4227kK29275 for mmusic-archive@odin.ietf.org; Thu, 1 May 2003 22:07:46 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4227k829272 for ; Thu, 1 May 2003 22:07:46 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id WAA21751 for ; Thu, 1 May 2003 22:00:58 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BPtE-0001Dy-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 22:03:08 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19BPtD-0001Du-00 for mmusic-web-archive@ietf.org; Thu, 01 May 2003 22:03:07 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4227S829255; Thu, 1 May 2003 22:07:28 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42263828317 for ; Thu, 1 May 2003 22:06:03 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id VAA21719 for ; Thu, 1 May 2003 21:59:15 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BPrZ-0001DH-00 for mmusic@ietf.org; Thu, 01 May 2003 22:01:25 -0400 Received: from sj-core-1.cisco.com ([171.71.177.237]) by ietf-mx with esmtp (Exim 4.12) id 19BPrT-0001D5-00 for mmusic@ietf.org; Thu, 01 May 2003 22:01:19 -0400 Received: from cisco.com (sjc-vpn1-277.cisco.com [10.21.97.21]) by sj-core-1.cisco.com (8.12.6/8.12.6) with ESMTP id h4220tLr023567; Thu, 1 May 2003 19:01:00 -0700 (PDT) Message-ID: <3EB1D159.582735A3@cisco.com> Date: Thu, 01 May 2003 22:00:57 -0400 From: Flemming Andreasen X-Mailer: Mozilla 4.79 [en]C-CCK-MCD (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Joerg Ott CC: mmusic@ietf.org, Colin Perkins , rkumar@cisco.com Subject: Re: [MMUSIC] WG Last Call on draft-rajeshkumar-mmusic-gpmd-02.txt References: <200304142041.h3EKf6OJ015678@purple.nge.isi.edu> <3E9B24C9.3090800@tzi.uni-bremen.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit In some off-line discussions, it was suggested, that we add the following as a new paragraph #3 in Section 3 (which defines the "vbd" gpmd parameter): When use of a "vbd" media format has been negotiated, voice-band data SHOULD be transported using either a "vbd" media format or another negotiated media format suitable for transporting the voice-band data in question. Examples of such media formats include RFC 2833 (with support for relevant data modem and fax tones), T.38 fax relay, and V.150 modem relay. Non-examples include G.723, G729, and PCMU without an accompanying "vbd" gpmd parameter. Note that selection of specific suitable media formats is typically done on the basis of stimuli, such as the detection of an answer tone, a fax preamble and a modem CM signal, which may occur at different times. Please let me know if you disagree with this. -- Flemming Joerg Ott wrote: > This is to issue WGLC on draft-rajeshkumar-mmusic-gpmd-02.txt > > "SDP attribute for Qualifying Media Formats with Generic Parameters" > > for Proposed Standard. The WGLC is to expire on April, 30th, 2003. > > Please direct any technical comments to the list and the authors, > and please send purely editorial remarks only to the authors. > > Thanks, > Joerg > > _______________________________________________ > mmusic mailing list > mmusic@ietf.org > https://www1.ietf.org/mailman/listinfo/mmusic _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Fri May 2 07:14:13 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA11470 for ; Fri, 2 May 2003 07:14:13 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h42BKhF12485 for mmusic-archive@odin.ietf.org; Fri, 2 May 2003 07:20:43 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42BKh812482 for ; Fri, 2 May 2003 07:20:43 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA11450 for ; Fri, 2 May 2003 07:13:42 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BYW8-0003iM-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 07:15:52 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19BYW8-0003iJ-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 07:15:52 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42BKW812470; Fri, 2 May 2003 07:20:32 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42BJd812385 for ; Fri, 2 May 2003 07:19:39 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA11429 for ; Fri, 2 May 2003 07:12:39 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BYV7-0003iG-00 for mmusic@ietf.org; Fri, 02 May 2003 07:14:49 -0400 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47] helo=penguin.wise.edt.ericsson.se) by ietf-mx with esmtp (Exim 4.12) id 19BYV1-0003iD-00 for mmusic@ietf.org; Fri, 02 May 2003 07:14:43 -0400 Received: from esealnt611.al.sw.ericsson.se (alteon-nat4.sw.ericsson.se [153.88.254.121]) by penguin.wise.edt.ericsson.se (8.12.9/8.12.9/WIREfire-1.6a) with ESMTP id h42BEwDW026557; Fri, 2 May 2003 13:14:58 +0200 (MEST) Received: from era.ericsson.se (research-nnng7k.ki.sw.ericsson.se [147.214.34.132]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2655.55) id KB4KHWW1; Fri, 2 May 2003 13:14:56 +0200 Message-ID: <3EB252E5.7000709@era.ericsson.se> Date: Fri, 02 May 2003 13:13:41 +0200 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jonathan Rosenberg CC: IETF MMUSIC WG Subject: Re: [MMUSIC] draft-ietf-mmusic-rtsp-nat-00.txt questions References: <20030430144343.GA5170@real.com> <3EAFE52A.8080805@dynamicsoft.com> <3EB03569.8090105@dynamicsoft.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Jonathan Rosenberg wrote: > > The idea is that the RTSP server implements STUN, yes. Muxing the RTP > and STUN is how you deal with symmetric RTP. How is that different > from having the RTSP server implement the new "fake RTP", and muxing > it with regular RTP? The goal when I started to write down a specification for Symmetric RTP was not to use fake RTP in any sense. It is still RTP while there is a functionality listing in on the media port. This even don't need multiplexing as all packets can pass the listing function and then be forwarded if needed. In a streaming server there seem to be very little need to forward the RTP packet from the listing function. However other application scenarios may exist where the server really want to receive the media packets. One problem that the STUN solution might suffer from is that RTSP ALGs go in and change the destination header. This will not create a problem as long as it opens the necessary bind for the changed address. From a design philosophical point the STUN solution has its bad behavior in the multiplexing point while symmetric RTP has its in the layering. Magnus Westerlund Multimedia Technologies, Ericsson Research ERA/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Fri May 2 09:06:14 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12828 for ; Fri, 2 May 2003 09:06:14 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h42DCl220010 for mmusic-archive@odin.ietf.org; Fri, 2 May 2003 09:12:47 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42DCk820007 for ; Fri, 2 May 2003 09:12:46 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12821 for ; Fri, 2 May 2003 09:05:28 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BaGJ-00046J-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 09:07:39 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19BaGI-00046G-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 09:07:38 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42DCG819983; Fri, 2 May 2003 09:12:16 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42D9Y819866 for ; Fri, 2 May 2003 09:09:34 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA12788 for ; Fri, 2 May 2003 09:02:32 -0400 (EDT) From: Rod.Walsh@nokia.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BaDS-00045Z-00 for mmusic@ietf.org; Fri, 02 May 2003 09:04:42 -0400 Received: from mgw-x4.nokia.com ([131.228.20.27]) by ietf-mx with esmtp (Exim 4.12) id 19BaDM-00045F-00 for mmusic@ietf.org; Fri, 02 May 2003 09:04:36 -0400 Received: from esvir04nok.ntc.nokia.com (esvir04nokt.ntc.nokia.com [172.21.143.36]) by mgw-x4.nokia.com (Switch-2.2.6/Switch-2.2.6) with ESMTP id h42D4rD24154 for ; Fri, 2 May 2003 16:04:53 +0300 (EET DST) Received: from esebh001.NOE.Nokia.com (unverified) by esvir04nok.ntc.nokia.com (Content Technologies SMTPRS 4.2.5) with ESMTP id ; Fri, 2 May 2003 16:04:53 +0300 Received: from esebe011.NOE.Nokia.com ([172.21.138.50]) by esebh001.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Fri, 2 May 2003 16:04:51 +0300 Received: from trebe003.NOE.Nokia.com ([172.22.232.175]) by esebe011.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Fri, 2 May 2003 16:04:51 +0300 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Date: Fri, 2 May 2003 16:04:50 +0300 Message-ID: <2BF0AD29BC31FE46B78877321144043101B9E335@trebe003.europe.nokia.com> Thread-Topic: [MMUSIC] draft-ietf-mmusic-rtsp-nat-00.txt questions Thread-Index: AcMO5dJN1vo8kgTlQwSooVS+2qhOfwABsT+QAANhl1A= To: Cc: , , , , , X-OriginalArrivalTime: 02 May 2003 13:04:51.0096 (UTC) FILETIME=[6AA20180:01C310AB] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h42DBO819926 Subject: [MMUSIC] Experiences with Media Discovery (for IMG) Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit Hello In San Francisco we loudly hummed to work on Internet Media Guides in MMUSIC. (As a reminder, the IETF56 MMUSIC minutes and Internet Media Guide (IMG) presentations are at http://www.dmn.tzi.org/ietf/mmusic/ - see cut text below too) I really need to find out about YOUR experience in media announcements and descriptor delivery. SDP and SAP love and hate knowledge as well as moving the metadata point-to-point (FTP, HTTP are pretty well used) and new work (SIP, SDPng, etc.) are very important so we can put together a picture of what a really needed by our IP world. Ultimately, our purpose is to be able to specify really useful protocols, etc. as IDs -> RFCs. But first we have a basic goal to compile: * requirements for Delivery of Media Metadata for Multicast Media * study how a framework of the existing IETF standards and work-in-progress can be used This way we can spot the gaps and set some sort of priority to more-than-just-our needs. So tell us a story, set some requirements, praise and condemn what we already have. Just do it now! My own mini-epic goes: I am working on a service announcement application for unidirectional (aka. broadcast) service/media/content IP delivery. The sorts of media involved are streaming audio and video, and files - both huge and tiny. So, with a few Nokia colleagues, I set to work on SDP and SAP a couple of years ago and after a lot of SDP extensions and SAP heart-ache ended up with a mix of proprietary XML + extended SDP over SAP and then over a couple of proprietary multicast file delivery protocols instead. Fortunately, most of the pain has faded with time, but we wished that our simple needs were already in IETF protocols from the beginning. Fixes for some of the issues of multicast and unidirectional "media announcement" transport and an elementary specification on framing media metadata are just as essential now. So we would very much like to gent involved with a next generation of service/session announcement and description based on MMUSIC's impressive background and specifications for this. In the process of this work we've already come up with a few requirements and an idea of the sort of tasks / specifications which we felt were needed. If you have a moment, check out the IDs on IMG which are a start at sharing this in MMUSIC (also linked from the IMG presentation @ http://www.dmn.tzi.org/ietf/mmusic/). There's also some earlier emails threads on this reflector based on the -pguide- IDs (precursor to IMG). Meanwhile, please email your needs and experiences to the reflector so we have much wider material and contributors, to make the work even more worthwhile. Thanks in advance, Rod Walsh. ========== To make life a little easier I cut and pasted some text on IMGs from IETF-56 (http://www.dmn.tzi.org/ietf/mmusic/) as a reminder... ---------- Multiparty Multimedia Session Control (MMUSIC) Working Group Minutes Reported by Colin Perkins The MMUSIC working group met once at the 56th IETF meeting in San Francisco. The group discussed connection oriented media, various SDP extensions, Offer/Answer examples, SDPng, Internet Media Guides, and RTSP. Introduction and Status Update Joerg Ott began the meeting with an introduction and status update. ... The working group has completed its charter, and a draft for a revised charter was sent to the mailing list prior to the meeting. This draft is under discussion between the chairs and area director, and comments are solicited from the group. It is expected that the revision will include work on SDP, SDPng, RTSP and Internet Media Guides. Conference Control has been ruled out of scope at this time. ... Internet Media Guides Rod Walsh outlined Internet Media Guides (IMGs), a potential new work item for the group. An Internet Media Guide (IMG) is a collection of multimedia session descriptions expressed using SDP, SDPng or some similar session description format. It is used to describe a collection of multimedia sessions (e.g. television programme schedules). The IMG must be delivered to a potentially large audience, who use it to join a subset of the sessions described, and who may need to be notified of changes to the IMG. This problem lends itself to solution by (extensions of) some existing mechanisms: SAP and SDP/SDPng. MMUSIC therefore seems the natural home for the work. Other groups (e.g. DVB-IPI, TV Anytime, and the IP datacast forum) have identified similar needs, but do not have the experience to solve the problem. The chairs presented some initial charter text discussing the problem (subject to modification/approval from the area directors) and asked if the working group considered this an appropriate work item? Strong support was received. ... ---------- Draft text for charter: An Internet Media Guide (IMG) is a set of multimedia session descriptions expressed using SDP, SDPng or some similar session description format. It is used to describe a collection of multimedia sessions (e.g. television programme schedules). The IMG must be delivered to a potentially large audience, who use it to join a subset of the sessions described, and who may need to be notified of changes to the IMG. MMUSIC will investigate work on delivery mechanisms for IMGs, generalizing our work on session announcement and discovery protocols (SAP, RTSP, SIP). We will investigate and document requirements for IMG delivery mechanisms, and identify the requirements that these delivery mechanisms impose on the session description formats used by the IMG. We will then work to produce a framework document outlining the use of (existing) protocols to create an IMG delivery infrastructure. After successful completion of these initial milestones for IMG delivery, the MMUSIC charter will be updated to reflect the actual steps for IMG delivery specifications. ---------- Cheers, Rod Walsh. _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Fri May 2 11:09:13 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA17430 for ; Fri, 2 May 2003 11:09:13 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h42FFlI29758 for mmusic-archive@odin.ietf.org; Fri, 2 May 2003 11:15:47 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42FFl829755 for ; Fri, 2 May 2003 11:15:47 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA17422 for ; Fri, 2 May 2003 11:08:42 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BcBY-0004sA-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 11:10:52 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19BcBX-0004s4-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 11:10:51 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42FFP829721; Fri, 2 May 2003 11:15:25 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42FDl829638 for ; Fri, 2 May 2003 11:13:47 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA17393 for ; Fri, 2 May 2003 11:06:28 -0400 (EDT) From: Rod.Walsh@nokia.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Bc9N-0004rR-00 for mmusic@ietf.org; Fri, 02 May 2003 11:08:37 -0400 Received: from mgw-x1.nokia.com ([131.228.20.21]) by ietf-mx with esmtp (Exim 4.12) id 19Bc9H-0004rD-00 for mmusic@ietf.org; Fri, 02 May 2003 11:08:31 -0400 Received: from esvir05nok.ntc.nokia.com (esvir05nokt.ntc.nokia.com [172.21.143.37]) by mgw-x1.nokia.com (Switch-2.2.6/Switch-2.2.6) with ESMTP id h42F8m703650 for ; Fri, 2 May 2003 18:08:48 +0300 (EET DST) Received: from esebh002.NOE.Nokia.com (unverified) by esvir05nok.ntc.nokia.com (Content Technologies SMTPRS 4.2.5) with ESMTP id ; Fri, 2 May 2003 18:08:48 +0300 Received: from esebe018.NOE.Nokia.com ([172.21.138.57]) by esebh002.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Fri, 2 May 2003 18:08:47 +0300 Received: from trebe003.NOE.Nokia.com ([172.22.232.175]) by esebe018.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Fri, 2 May 2003 18:08:46 +0300 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Date: Fri, 2 May 2003 16:06:28 +0300 Message-ID: <2BF0AD29BC31FE46B78877321144043101B9E336@trebe003.europe.nokia.com> Thread-Topic: [MMUSIC] draft-ietf-mmusic-rtsp-nat-00.txt questions Thread-Index: AcMO5dJN1vo8kgTlQwSooVS+2qhOfwABsT+Q To: Cc: , , , , , X-OriginalArrivalTime: 02 May 2003 15:08:46.0728 (UTC) FILETIME=[BA9D6880:01C310BC] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h42FEH829664 Subject: [MMUSIC] Existing IETF solutions relating to the IMG Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit Hi To help in making the IMG Framework widely applicable, I would be grateful if anyone has additions to the following lists of IETF related specification which could fulfil some of the requirements of the IMG system. The purpose of this is to identify which requirements can already be fulfilled (well or badly) and which are still unsolved, which makes it possible to fix the scope of any needed additional work. --- Relevant RFCs include: * Descriptors SDP: www.ietf.org/rfc/rfc2327.txt SDP with IPv6: www.ietf.org/rfc/rfc3266.txt * Transport SAPv2: www.ietf.org/rfc/rfc2974.txt SIP: www.ietf.org/rfc/rfc3261.txt SIP-notify: www.ietf.org/rfc/rfc3265.txt HTTP: www.ietf.org/rfc/rfc2616.txt ALC: www.ietf.org/rfc/rfc3450.txt * General Multicast Apps: www.ietf.org/rfc/rfc3170.txt RMT criteria: www.ietf.org/rfc/rfc2357.txt --- Current relevant IETF WG IDs include: (Using Watersprings links in case anyone wants to refer back after and update or expiry) * Descriptors SDPng: www.watersprings.org/pub/id/draft-ietf-mmusic-sdpng-06.txt) (the sections on use in the unidirectional/multicast cases (e.g. with SAP) have not yet been completed) --- Current individual IDs to feed IMG include: 1. IMG Framework and Use cases www.watersprings.org/pub/id/draft-nomura-mmusic-img-requirements-00.txt draft-nomura-mmusic-img-requirements-00 (Nomura, Schulzrinne, Feb 2003) www.watersprings.org/pub/id/draft-stallard-mmusic-dvb-thoughts-on-sds-00.txt draft-stallard-mmusic-dvb-thoughts-on-sds-00 (Stallard, Paila, Feb 2003) www.watersprings.org/pub/id/draft-nomura-mmusic-img-framework-00.txt draft-nomura-mmusic-img-framework-00 (Nomura, Schulzrinne, Feb 2003) 2. IMG Metadata (data model + descriptors) www.watersprings.org/pub/id/draft-luoma-mmusic-img-metadata-00.txt draft-luoma-mmusic-img-metadata-00 (Luoma, Feb 2003) 3. p-t-m transport (MUPPET) www.watersprings.org/pub/id/draft-luoma-mmusic-img-muppet-01.txt draft-luoma-mmusic-img-muppet-01 (Luoma, March 2003) 4. p-t-p transport & control no IDs yet --- Thanks in advance for any idea and links. Cheers, Rod Walsh. ======================================= Rod Walsh Nokia Research Center Tampere, Finland +358 50 483 5632 rod.walsh@nokia.com ======================================= _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Fri May 2 11:25:13 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA17828 for ; Fri, 2 May 2003 11:25:13 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h42FVlX30635 for mmusic-archive@odin.ietf.org; Fri, 2 May 2003 11:31:47 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42FVl830632 for ; Fri, 2 May 2003 11:31:47 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA17820 for ; Fri, 2 May 2003 11:24:42 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BcR1-0004yO-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 11:26:51 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19BcR1-0004yG-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 11:26:51 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42FV6830602; Fri, 2 May 2003 11:31:06 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42FUw830564 for ; Fri, 2 May 2003 11:30:58 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA17804 for ; Fri, 2 May 2003 11:23:54 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BcQF-0004xx-00 for mmusic@ietf.org; Fri, 02 May 2003 11:26:03 -0400 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47] helo=penguin.wise.edt.ericsson.se) by ietf-mx with esmtp (Exim 4.12) id 19BcQ9-0004xt-00 for mmusic@ietf.org; Fri, 02 May 2003 11:25:57 -0400 Received: from esealnt613.al.sw.ericsson.se (alteon-nat8.sw.ericsson.se [153.88.254.125]) by penguin.wise.edt.ericsson.se (8.12.9/8.12.9/WIREfire-1.6a) with ESMTP id h42FQEDW018758 for ; Fri, 2 May 2003 17:26:14 +0200 (MEST) Received: from era.ericsson.se (research-nnng7k.ki.sw.ericsson.se [147.214.34.132]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2655.55) id K1NPHAF5; Fri, 2 May 2003 17:26:13 +0200 Message-ID: <3EB28DCA.5070602@era.ericsson.se> Date: Fri, 02 May 2003 17:24:58 +0200 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 X-Accept-Language: en-us, en MIME-Version: 1.0 To: IETF MMUSIC WG Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Subject: [MMUSIC] RTSP NAT: Using ICE in RTSP - Proposal Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Hi, I think we are having a good discussion. However to come to some conclusion we should try to compare the pro and cons of STUN/ICE and Symmetric RTP. To do this I think people would need to understand a bit better how STUN/ICE would work with RTSP. Therefore I have created the following proposal: 1. The client retrieves the SDP from the ICE enabled server. This SDP contains indication that the server supports ICE and gives the address/ports for each media and its necessary UDP streams. This may require a SDP extension or possibly the c= and port numbers can be used. This will however require the server to send media streams from well known ports. Many sessions will go over the same ports. 2. The client analysis the SDP and determines the number of local UDP ports it will need. For each port it also installs a STUN server with authentication requirement using a authentication tag. From these ports the client then tries to connect to the server's announced ports for respective media flow. If successful the NAT binding nearest the server is learned. Also other addressed can be collected, like public STUN addresses and TURN address. 3. Client creates a SETUP request where he includes a number of transport header specifications. The client may offer more than one normal transport configuration, but for each such it will need to create multiple copies. Each copy contains the different possible destination addresses that it has learned in falling priority order. The client also includes in the transport specification the ICE indicator carrying the authentication tag necessary to use the clients STUN servers. 4. The server receives the SETUP request and selects which transport specification configuration it would like to accept, i.e. all specifications that are the same except for destination address/port. For all specifications in the configuration the server tries to STUN these addresses/clients. Depending on the answers: A. The server successful connects to the clients STUN server: The server selects the specification with highest priority that yields a successful response and include that address/port in the SETUP response's transport headers destination field. The media is ready to be played. B. The server fails to reach the client. It uses a new error coded to inform the client of this. At the same time it includes a updated SDP which contains all addresses that it is reachable on. The server might have learned some new since the initial SDP. The client when receiving this tries again by going to point 2 and repeat the whole. If it fails multiple times the server and client lacks connectivity. As seen above the addition of ICE to RTSP will require the following standardization work: - Possible SDP extensions to inform client that it is ICE capable. - A Transport header parameter for the authentication tag. - A new RTSP error code and specification on body (SDP) return. New protocol mechanisms that will be required to implement: Server: - Full STUN server - limited STUN client - HMAC for STUN authentication - SDP extensions MID + ICE necessities - SDP generation on the fly of more parameters. - RTSP error code and ICE extension Client: - Limited STUN server - Limited STUN client - HMAC - SDP extensions MID + ICE necessities - RTSP error code and ICE extension Properties: - Solve NAT connectivity discovery for basically all cases as long as a TCP connection between them can be established in the first hand. This include Servers behind NATs (A proxy (DNS ALG) between address domains will be required to get TCP through). - Prevents DOS attack possibilities as receiving client requires to do STUN responses on its media reception ports. - Will increase the setup delay with at least the time it takes the server to perform its STUN requests. - Forces servers to use a few well known media ports. - Depends on being able to do a demultiplexing between UDP packet contents first byte to determine if packet is media or STUN message. Please consider this proposal. Feedback about shortcomings, errors, and possible improvements are welcome. Best Regards Magnus Westerlund Multimedia Technologies, Ericsson Research ERA/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Fri May 2 11:39:53 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA18368 for ; Fri, 2 May 2003 11:39:53 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h42FkSC32433 for mmusic-archive@odin.ietf.org; Fri, 2 May 2003 11:46:28 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42FkS832430 for ; Fri, 2 May 2003 11:46:28 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA18299 for ; Fri, 2 May 2003 11:39:08 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Bcez-00055Q-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 11:41:17 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19Bcey-00055G-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 11:41:16 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42Fi9832254; Fri, 2 May 2003 11:44:09 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42Fhv832190 for ; Fri, 2 May 2003 11:43:57 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA18208 for ; Fri, 2 May 2003 11:36:52 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Bccn-00053u-00 for mmusic@ietf.org; Fri, 02 May 2003 11:39:02 -0400 Received: from sophia.inria.fr ([138.96.64.20]) by ietf-mx with esmtp (Exim 4.12) id 19Bcci-00053g-00 for mmusic@ietf.org; Fri, 02 May 2003 11:38:56 -0400 Received: from localhost (odie.inria.fr [138.96.88.52]) by sophia.inria.fr (8.12.8/8.12.5) with ESMTP id h42Fck6j022085; Fri, 2 May 2003 17:38:46 +0200 Date: Fri, 02 May 2003 17:38:44 +0200 (MEST) Message-Id: <20030502.173844.04711828.Hitoshi.Asaeda@sophia.inria.fr> To: Rod.Walsh@nokia.com Cc: mmusic@ietf.org, nom@flab.fujitsu.co.jp, hgs@cs.columbia.edu, juha-pekka.luoma@nokia.com, pstallard@tandbergtv.com, toni.paila@nokia.com, jo@informatik.uni-bremen.de Subject: Re: [MMUSIC] Experiences with Media Discovery (for IMG) From: Hitoshi Asaeda In-Reply-To: <2BF0AD29BC31FE46B78877321144043101B9E335@trebe003.europe.nokia.com> References: <2BF0AD29BC31FE46B78877321144043101B9E335@trebe003.europe.nokia.com> X-Mailer: Mew version 2.2rc1 on Emacs 21.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Hi Rod. > I really need to find out about YOUR experience in media > announcements and descriptor delivery. SDP and SAP love and hate > knowledge as well as moving the metadata point-to-point (FTP, HTTP > are pretty well used) and new work (SIP, SDPng, etc.) are very > important so we can put together a picture of what a really needed > by our IP world. Ultimately, our purpose is to be able to specify > really useful protocols, etc. as IDs -> RFCs. But first we have a > basic goal to compile: I've put a draft version of my paper related to this discussion before the last IETF. Our new "channel announcement mechamism" is called "Channel Reflector". The purpose of this proposal is to provide a feasible channel announcement mechanism for SSM environment without using SAP advertisement. By using Channel Reflector, we can eliminate source discovery procedure from multicast service model. Some parts of the idea can be overwrapped to IMG, therefore we may be able to collaborate. If you are interested in, you'd be able to get it from; . Any comment would be appreciate. Thanks. -- Hitoshi Asaeda _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Fri May 2 12:34:20 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA19924 for ; Fri, 2 May 2003 12:34:20 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h42Getf04987 for mmusic-archive@odin.ietf.org; Fri, 2 May 2003 12:40:55 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42Get804984 for ; Fri, 2 May 2003 12:40:55 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA19914 for ; Fri, 2 May 2003 12:33:49 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BdVp-0005U8-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 12:35:54 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19BdVV-0005Tr-00 for mmusic-web-archive@ietf.org; Fri, 02 May 2003 12:35:33 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42Ge9804946; Fri, 2 May 2003 12:40:09 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h42Gdh804866 for ; Fri, 2 May 2003 12:39:43 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA19862 for ; Fri, 2 May 2003 12:32:22 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19BdUQ-0005TE-00 for mmusic@ietf.org; Fri, 02 May 2003 12:34:26 -0400 Received: from ns2.packetvideo.com ([63.214.191.68]) by ietf-mx with esmtp (Exim 4.12) id 19BdTv-0005SV-00 for mmusic@ietf.org; Fri, 02 May 2003 12:33:55 -0400 Received: from misty.packetvideo.com (pv-fw [63.214.191.66]) by ns2.packetvideo.com (8.12.9/8.12.9) with ESMTP id h42GXCYo059839; Fri, 2 May 2003 09:33:12 -0700 (PDT) Received: by MISTY with Internet Mail Service (5.5.2653.19) id ; Fri, 2 May 2003 09:33:12 -0700 Message-ID: <72263E8E8622D611975C0002B32C19D84A7A5A@MISTY> From: Thomas Zeng To: "'Magnus Westerlund'" , Jonathan Rosenberg Cc: IETF MMUSIC WG Subject: RE: [MMUSIC] draft-ietf-mmusic-rtsp-nat-00.txt questions Date: Fri, 2 May 2003 09:33:11 -0700 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Magnus: If true RTP packets are used as binding packets, as described in your email, both Client and Server will take on the added burden of generating RTCP RRs and SRs for them. Particularly, current RTSP client implementations only generates RR, but in future, they would have to start sending SRs ! I like using a STUN like UDP packets as binding packets, and having RTSP server distinguishing the two. One proposal I had last week was to use a simple UDP of 8 bytes as binding packets, which is smaller than RTP/RTCP header (12 bytes), hence trivialize the demuxing problem that people seem to be very afraid of. Thanks, - thomas -----Original Message----- From: Magnus Westerlund [mailto:magnus.westerlund@era.ericsson.se] Sent: Friday, May 02, 2003 4:14 AM To: Jonathan Rosenberg Cc: IETF MMUSIC WG Subject: Re: [MMUSIC] draft-ietf-mmusic-rtsp-nat-00.txt questions Jonathan Rosenberg wrote: > > The idea is that the RTSP server implements STUN, yes. Muxing the RTP > and STUN is how you deal with symmetric RTP. How is that different > from having the RTSP server implement the new "fake RTP", and muxing > it with regular RTP? The goal when I started to write down a specification for Symmetric RTP was not to use fake RTP in any sense. It is still RTP while there is a functionality listing in on the media port. This even don't need multiplexing as all packets can pass the listing function and then be forwarded if needed. In a streaming server there seem to be very little need to forward the RTP packet from the listing function. However other application scenarios may exist where the server really want to receive the media packets. One problem that the STUN solution might suffer from is that RTSP ALGs go in and change the destination header. This will not create a problem as long as it opens the necessary bind for the changed address. From a design philosophical point the STUN solution has its bad behavior in the multiplexing point while symmetric RTP has its in the layering. Magnus Westerlund Multimedia Technologies, Ericsson Research ERA/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Mon May 5 04:18:10 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA26769 for ; Mon, 5 May 2003 04:18:10 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h458Q4C13719 for mmusic-archive@odin.ietf.org; Mon, 5 May 2003 04:26:04 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h458Q4813716 for ; Mon, 5 May 2003 04:26:04 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA26757 for ; Mon, 5 May 2003 04:17:39 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CbCM-0004U3-00 for mmusic-web-archive@ietf.org; Mon, 05 May 2003 04:19:46 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19CbCL-0004Tw-00 for mmusic-web-archive@ietf.org; Mon, 05 May 2003 04:19:45 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h458PS813698; Mon, 5 May 2003 04:25:28 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h458MJ813617 for ; Mon, 5 May 2003 04:22:19 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA26735 for ; Mon, 5 May 2003 04:13:40 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Cb8V-0004TP-00 for mmusic@ietf.org; Mon, 05 May 2003 04:15:47 -0400 Received: from beamer.mchh.siemens.de ([194.138.158.163]) by ietf-mx with esmtp (Exim 4.12) id 19Cb8P-0004TL-00 for mmusic@ietf.org; Mon, 05 May 2003 04:15:41 -0400 Received: from moody.mchh.siemens.de ([139.21.205.85]) by beamer.mchh.siemens.de (8.9.3/8.9.3) with ESMTP id KAA22385; Mon, 5 May 2003 10:15:50 +0200 (MET DST) Received: from mchh247e.demchh201e.icn.siemens.de (mchh247e.mchh.siemens.de [139.21.200.57]) by moody.mchh.siemens.de (8.9.3/8.9.1) with ESMTP id KAA07855; Mon, 5 May 2003 10:15:49 +0200 (MET DST) Received: by mchh247e.mchh.siemens.de with Internet Mail Service (5.5.2656.59) id ; Mon, 5 May 2003 10:15:28 +0200 Message-ID: From: Kreuter Ruediger To: "'Flemming Andreasen'" Cc: mmusic@ietf.org, Colin Perkins , rkumar@cisco.com, Joerg Ott Subject: AW: [MMUSIC] WG Last Call on draft-rajeshkumar-mmusic-gpmd-02.txt Date: Mon, 5 May 2003 10:15:23 +0200 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2656.59) Content-Type: text/plain; charset="ISO-8859-1" X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h458N4813643 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , X-MIME-Autoconverted: from 8bit to quoted-printable by www1.ietf.org id h458PS813698 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h458Q4813716 Content-Transfer-Encoding: 8bit > -----Ursprüngliche Nachricht----- > Von: Flemming Andreasen [mailto:fandreas@cisco.com] > Gesendet: Freitag, 2. Mai 2003 04:01 > An: Joerg Ott > Cc: mmusic@ietf.org; Colin Perkins; rkumar@cisco.com > Betreff: Re: [MMUSIC] WG Last Call on > draft-rajeshkumar-mmusic-gpmd-02.txt > > > In some off-line discussions, it was suggested, that we add > the following > as a new paragraph #3 in Section 3 (which defines the "vbd" gpmd > parameter): > > When use of a "vbd" media format has been negotiated, voice-band data > SHOULD be transported using either a "vbd" media format or another > negotiated media format suitable for transporting the > voice-band data in > question. Examples of such media formats include RFC 2833 > (with support > for relevant data modem and fax tones), Up to now my understanding of RFC2833 was, that it can be used to relay the connection setup negotiation tones between fax/modem terminals, but not the fax/modem payload. Am I wrong with this ? > T.38 fax relay, and > V.150 modem > relay. Non-examples include G.723, G729, and PCMU without an > accompanying "vbd" gpmd parameter. Note that selection of specific > suitable media formats is typically done on the basis of stimuli, such > as the detection of an answer tone, a fax preamble and a modem CM > signal, which may occur at different times. > > > Please let me know if you disagree with this. > > -- Flemming > > I agree with this additional paragraph in general. _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Mon May 5 05:54:27 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA28074 for ; Mon, 5 May 2003 05:54:27 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h45A2N619503 for mmusic-archive@odin.ietf.org; Mon, 5 May 2003 06:02:23 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45A2N819500 for ; Mon, 5 May 2003 06:02:23 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA28062 for ; Mon, 5 May 2003 05:53:56 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CchX-0004qH-00 for mmusic-web-archive@ietf.org; Mon, 05 May 2003 05:56:03 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19CchX-0004qA-00 for mmusic-web-archive@ietf.org; Mon, 05 May 2003 05:56:03 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45A2D819490; Mon, 5 May 2003 06:02:13 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45A1F819468 for ; Mon, 5 May 2003 06:01:15 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA28036 for ; Mon, 5 May 2003 05:52:33 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CcgC-0004pr-00 for mmusic@ietf.org; Mon, 05 May 2003 05:54:40 -0400 Received: from gorilla.mchh.siemens.de ([194.138.158.18]) by ietf-mx with esmtp (Exim 4.12) id 19Ccg6-0004pj-00 for mmusic@ietf.org; Mon, 05 May 2003 05:54:34 -0400 Received: from moody.mchh.siemens.de ([139.21.205.85]) by gorilla.mchh.siemens.de (8.9.3/8.9.3) with ESMTP id LAA29619; Mon, 5 May 2003 11:54:49 +0200 (MET DST) Received: from mchh273e.demchh201e.icn.siemens.de (mchh273e.mchh.siemens.de [139.21.200.83]) by moody.mchh.siemens.de (8.9.3/8.9.1) with ESMTP id LAA29978; Mon, 5 May 2003 11:54:51 +0200 (MET DST) Received: by mchh273e.mchh.siemens.de with Internet Mail Service (5.5.2656.59) id ; Mon, 5 May 2003 11:54:29 +0200 Message-ID: From: Kreuter Ruediger To: "'Flemming Andreasen'" Cc: "'Jonathan Rosenberg'" , Stephen Casner , Rajesh Kumar , Colin Perkins , mmusic@ietf.org, mmostafa@cisco.com, hisham@cisco.com, mgarakan@cisco.com, paulej@cisco.com Subject: AW: [MMUSIC] Re: Multiple 'm' lines with the same port number Date: Mon, 5 May 2003 11:54:28 +0200 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2656.59) Content-Type: text/plain; charset="ISO-8859-1" Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , > > Kreuter Ruediger wrote: > > > Sending a reinvite for a switchover from voice > > to voiceband data (incl. fax) is applicable. > > But Rajesh's example below is text/t140, that > > is, we are "talking" about TTY/TDD. This is > > completely different because the transmission > > of TTY characters and voice can be mixed in > > any way on a TDM line, and therefore must be > > transferable in a VoIP connection too. > > That is, it can be that during a connection > > a sender types some characters on his TTY, > > then he speeks some sentences, then he types > > some characters ... > > You don't really want to send re-invites > > every couple of sentences, do you ? > > The only practicable way is to mix text/t140 > > and audio/G7xx the same way as audio/RFC2833 > > and audio/G7xx. > > Right - as long as both the transport and the underlying > "type" of media > (not to be confused with MIME type which I think ends up > being a bit too > restrictive) is the same, this should be just fine. For > example, let's say > we defined a T.38 RTP payload format, but we were still using > the existing > "image/t38" MIME type, then it should be perfectly fine to > switch between > T.38 RTP packets and say PCMU. However, mixing different > types of media, > such as audio and video, or different types of transport, > such as RTP/AVP > and image/udptl for non-RTP T.38 fax is clearly not a good idea. > Agreed ! BTW, in ch. 8.3.3 "Changing Media Types" of RFC3264 it says : "... The offerer MUST be prepared to receive media with both the old and new types until the answer is received, and media with the new type is received and reaches the top of the playout buffer." If the UDP port number is reused during the switch over from voice to T.38/UDPTL, this may end up, that T.38/UDPTL packets will be thrown to the RTP stack until the answer for the switch over comes in ... > > > > Another good reason to mix these media types > > is performance. Depending on the TTY terminal > > type, a TTY transmission can start without a > > startup sequence as it is used by fax or data > > modem transmissions. Therefore the switch over > > to text/t140 must be very fast otherwise you > > loose characters. And the sending person doesn't > > know if his characters were lost or not. > > Now imagine a deaf person calling an emergancy > > line ... > > Sending a re-invite to switch over the connection > > may use up a second in a heavy loaded network. > > Agreed - you really need a solution that enables you to > switch on the fly, > however currently we don't have that when the top-level MIME > types differ > (note that FID and ALT don't give you these capabilities either). The > problem is, that SDP currently lacks a mechanism that would > enable us to > negotiate different top-level MIME types in a single media > stream. This can > however be addressed fairly easily by writing an extension to > offer/answer > that uses SIMCAP (RFC 3407) capabilities during negotiation. > If there is > interest, I can write something up. > > -- Flemming > Sounds good to me. Even though SIMCAP only exchanges potential additional capabilities, but there is no guarantee that the remote side will use its propagated capability if it is not negotiated; e.g. to switch on the fly between voice and text/t140 (both on top of RTP). _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Mon May 5 10:01:29 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA02178 for ; Mon, 5 May 2003 10:01:28 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h45E9T204040 for mmusic-archive@odin.ietf.org; Mon, 5 May 2003 10:09:29 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45E9T804037 for ; Mon, 5 May 2003 10:09:29 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA02140 for ; Mon, 5 May 2003 10:00:58 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CgYa-0005xs-00 for mmusic-web-archive@ietf.org; Mon, 05 May 2003 10:03:04 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19CgYZ-0005xp-00 for mmusic-web-archive@ietf.org; Mon, 05 May 2003 10:03:03 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45E9H804025; Mon, 5 May 2003 10:09:17 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45E66803025 for ; Mon, 5 May 2003 10:06:06 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA02053 for ; Mon, 5 May 2003 09:57:35 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CgVJ-0005wY-00 for mmusic@ietf.org; Mon, 05 May 2003 09:59:41 -0400 Received: from sj-core-2.cisco.com ([171.71.177.254]) by ietf-mx with esmtp (Exim 4.12) id 19CgVD-0005wU-00 for mmusic@ietf.org; Mon, 05 May 2003 09:59:36 -0400 Received: from cisco.com (sjc-vpn3-953.cisco.com [10.21.67.185]) by sj-core-2.cisco.com (8.12.6/8.12.6) with ESMTP id h45DxUxI026147; Mon, 5 May 2003 06:59:31 -0700 (PDT) Message-ID: <3EB66E42.A9901808@cisco.com> Date: Mon, 05 May 2003 09:59:30 -0400 From: Flemming Andreasen X-Mailer: Mozilla 4.79 [en]C-CCK-MCD (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Kreuter Ruediger CC: mmusic@ietf.org, Colin Perkins , rkumar@cisco.com, Joerg Ott Subject: Re: AW: [MMUSIC] WG Last Call on draft-rajeshkumar-mmusic-gpmd-02.txt References: Content-Type: text/plain; charset=iso-8859-1 X-MIME-Autoconverted: from 8bit to quoted-printable by sj-core-2.cisco.com id h45DxUxI026147 X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h45E6a803045 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , X-MIME-Autoconverted: from 8bit to quoted-printable by www1.ietf.org id h45E9H804025 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h45E9T804037 Content-Transfer-Encoding: 8bit Kreuter Ruediger wrote: > > -----Ursprüngliche Nachricht----- > > Von: Flemming Andreasen [mailto:fandreas@cisco.com] > > Gesendet: Freitag, 2. Mai 2003 04:01 > > An: Joerg Ott > > Cc: mmusic@ietf.org; Colin Perkins; rkumar@cisco.com > > Betreff: Re: [MMUSIC] WG Last Call on > > draft-rajeshkumar-mmusic-gpmd-02.txt > > > > > > In some off-line discussions, it was suggested, that we add > > the following > > as a new paragraph #3 in Section 3 (which defines the "vbd" gpmd > > parameter): > > > > When use of a "vbd" media format has been negotiated, voice-band data > > SHOULD be transported using either a "vbd" media format or another > > negotiated media format suitable for transporting the > > voice-band data in > > question. Examples of such media formats include RFC 2833 > > (with support > > for relevant data modem and fax tones), > > Up to now my understanding of RFC2833 was, that it can be used > to relay the connection setup negotiation tones between fax/modem > terminals, but not the fax/modem payload. Am I wrong with this ? No. The above was trying to capture that transport of such things as V.25 ANS and V.8 ANSam using RFC 2833 would be just fine. Do you have any suggested wording changes that would make that clearer ? -- Flemming > > > > T.38 fax relay, and > > V.150 modem > > relay. Non-examples include G.723, G729, and PCMU without an > > accompanying "vbd" gpmd parameter. Note that selection of specific > > suitable media formats is typically done on the basis of stimuli, such > > as the detection of an answer tone, a fax preamble and a modem CM > > signal, which may occur at different times. > > > > > > Please let me know if you disagree with this. > > > > -- Flemming > > > > > > I agree with this additional paragraph in general. _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Mon May 5 10:02:14 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA02227 for ; Mon, 5 May 2003 10:02:14 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h45EAF004108 for mmusic-archive@odin.ietf.org; Mon, 5 May 2003 10:10:15 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45EAF804105 for ; Mon, 5 May 2003 10:10:15 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA02199 for ; Mon, 5 May 2003 10:01:44 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CgZK-0005yL-00 for mmusic-web-archive@ietf.org; Mon, 05 May 2003 10:03:50 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19CgZJ-0005yD-00 for mmusic-web-archive@ietf.org; Mon, 05 May 2003 10:03:49 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45EA2804087; Mon, 5 May 2003 10:10:02 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45E8q803982 for ; Mon, 5 May 2003 10:08:52 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA02120 for ; Mon, 5 May 2003 10:00:21 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CgXz-0005xX-00 for mmusic@ietf.org; Mon, 05 May 2003 10:02:27 -0400 Received: from sj-core-2.cisco.com ([171.71.177.254]) by ietf-mx with esmtp (Exim 4.12) id 19CgXt-0005xB-00 for mmusic@ietf.org; Mon, 05 May 2003 10:02:21 -0400 Received: from cisco.com (sjc-vpn3-953.cisco.com [10.21.67.185]) by sj-core-2.cisco.com (8.12.6/8.12.6) with ESMTP id h45E2GxI000076; Mon, 5 May 2003 07:02:16 -0700 (PDT) Message-ID: <3EB66EE7.7E9FECA@cisco.com> Date: Mon, 05 May 2003 10:02:16 -0400 From: Flemming Andreasen X-Mailer: Mozilla 4.79 [en]C-CCK-MCD (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Kreuter Ruediger CC: "'Jonathan Rosenberg'" , Stephen Casner , Rajesh Kumar , Colin Perkins , mmusic@ietf.org, mmostafa@cisco.com, hisham@cisco.com, mgarakan@cisco.com, paulej@cisco.com Subject: Re: AW: [MMUSIC] Re: Multiple 'm' lines with the same port number References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Kreuter Ruediger wrote: > > > > > > Another good reason to mix these media types > > > is performance. Depending on the TTY terminal > > > type, a TTY transmission can start without a > > > startup sequence as it is used by fax or data > > > modem transmissions. Therefore the switch over > > > to text/t140 must be very fast otherwise you > > > loose characters. And the sending person doesn't > > > know if his characters were lost or not. > > > Now imagine a deaf person calling an emergancy > > > line ... > > > Sending a re-invite to switch over the connection > > > may use up a second in a heavy loaded network. > > > > Agreed - you really need a solution that enables you to > > switch on the fly, > > however currently we don't have that when the top-level MIME > > types differ > > (note that FID and ALT don't give you these capabilities either). The > > problem is, that SDP currently lacks a mechanism that would > > enable us to > > negotiate different top-level MIME types in a single media > > stream. This can > > however be addressed fairly easily by writing an extension to > > offer/answer > > that uses SIMCAP (RFC 3407) capabilities during negotiation. > > If there is > > interest, I can write something up. > > > > -- Flemming > > > > Sounds good to me. > Even though SIMCAP only exchanges potential additional capabilities, > but there is no guarantee that the remote side will use its propagated > capability if it is not negotiated; e.g. to switch on the fly between > voice and text/t140 (both on top of RTP). Right - the idea would be to extend those semantics in conjunction with offer/answer. -- Flemming _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Tue May 6 04:25:29 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA11592 for ; Tue, 6 May 2003 04:25:29 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h468XqY32034 for mmusic-archive@odin.ietf.org; Tue, 6 May 2003 04:33:52 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h468Xq832031 for ; Tue, 6 May 2003 04:33:52 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA11582 for ; Tue, 6 May 2003 04:24:59 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Cxmy-0004GB-00 for mmusic-web-archive@ietf.org; Tue, 06 May 2003 04:27:04 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19Cxmx-0004G7-00 for mmusic-web-archive@ietf.org; Tue, 06 May 2003 04:27:03 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h468XY832008; Tue, 6 May 2003 04:33:34 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h468VI831912 for ; Tue, 6 May 2003 04:31:18 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA11535 for ; Tue, 6 May 2003 04:22:09 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CxkF-0004Fb-00 for mmusic@ietf.org; Tue, 06 May 2003 04:24:15 -0400 Received: from gorilla.mchh.siemens.de ([194.138.158.18]) by ietf-mx with esmtp (Exim 4.12) id 19Cxk9-0004FV-00 for mmusic@ietf.org; Tue, 06 May 2003 04:24:09 -0400 Received: from moody.mchh.siemens.de ([139.21.205.85]) by gorilla.mchh.siemens.de (8.9.3/8.9.3) with ESMTP id KAA18309; Tue, 6 May 2003 10:24:25 +0200 (MET DST) Received: from mchh248e.mchh.siemens.de (mchh248e.mchh.siemens.de [139.21.200.58]) by moody.mchh.siemens.de (8.9.3/8.9.1) with ESMTP id KAA21840; Tue, 6 May 2003 10:24:25 +0200 (MET DST) Received: by mchh248e.mchh.siemens.de with Internet Mail Service (5.5.2653.19) id ; Tue, 6 May 2003 10:24:03 +0200 Message-ID: From: Kreuter Ruediger To: "'Flemming Andreasen'" Cc: mmusic@ietf.org, Colin Perkins , rkumar@cisco.com, Joerg Ott Subject: RE: [MMUSIC] WG Last Call on draft-rajeshkumar-mmusic-gpmd-02.txt Date: Tue, 6 May 2003 10:23:53 +0200 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="ISO-8859-1" X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h468VI831913 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , X-MIME-Autoconverted: from 8bit to quoted-printable by www1.ietf.org id h468XY832008 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h468Xq832031 Content-Transfer-Encoding: 8bit > > Kreuter Ruediger wrote: > > > > -----Ursprüngliche Nachricht----- > > > Von: Flemming Andreasen [mailto:fandreas@cisco.com] > > > Gesendet: Freitag, 2. Mai 2003 04:01 > > > An: Joerg Ott > > > Cc: mmusic@ietf.org; Colin Perkins; rkumar@cisco.com > > > Betreff: Re: [MMUSIC] WG Last Call on > > > draft-rajeshkumar-mmusic-gpmd-02.txt > > > > > > > > > In some off-line discussions, it was suggested, that we add > > > the following > > > as a new paragraph #3 in Section 3 (which defines the "vbd" gpmd > > > parameter): > > > > > > When use of a "vbd" media format has been negotiated, > voice-band data > > > SHOULD be transported using either a "vbd" media format or another > > > negotiated media format suitable for transporting the > > > voice-band data in > > > question. Examples of such media formats include RFC 2833 > > > (with support > > > for relevant data modem and fax tones), > > > > Up to now my understanding of RFC2833 was, that it can be used > > to relay the connection setup negotiation tones between fax/modem > > terminals, but not the fax/modem payload. Am I wrong with this ? > > No. The above was trying to capture that transport of such > things as V.25 > ANS and V.8 ANSam using RFC 2833 would be just fine. Do you have any > suggested wording changes that would make that clearer ? How about: ***************************************************** When use of a "vbd" media format has been negotiated, voice-band data SHOULD be transported using either a "vbd" media format or another negotiated media format suitable for transporting the voice-band data in question. Examples of such media formats include T.38 fax relay and V.150 modem relay. Non-examples include G.723.1, G.729, and PCMA/PCMU without an accompanying "vbd" gpmd parameter. Note that selection of specific suitable media formats is typically done on the basis of stimuli, such as the detection of a calling or an answer tone, a V.21 preamble with fax flags or a modem CM signal, which may occur at different times. In any case RFC 2833 may be used to relay relevant data modem and fax events. ***************************************************** Regards, Ruediger > > -- Flemming > > > > T.38 fax relay, and > > > V.150 modem > > > relay. Non-examples include G.723, G729, and PCMU without an > > > accompanying "vbd" gpmd parameter. Note that selection of specific > > > suitable media formats is typically done on the basis of > stimuli, such > > > as the detection of an answer tone, a fax preamble and a modem CM > > > signal, which may occur at different times. > > > _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Tue May 6 07:51:39 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA15784 for ; Tue, 6 May 2003 07:51:39 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h46C07r15043 for mmusic-archive@odin.ietf.org; Tue, 6 May 2003 08:00:07 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46C07815039 for ; Tue, 6 May 2003 08:00:07 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA15729 for ; Tue, 6 May 2003 07:50:53 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19D10F-0005GE-00 for mmusic-web-archive@ietf.org; Tue, 06 May 2003 07:52:59 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19D10F-0005GB-00 for mmusic-web-archive@ietf.org; Tue, 06 May 2003 07:52:59 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46Bxc814983; Tue, 6 May 2003 07:59:38 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46Bv1814815 for ; Tue, 6 May 2003 07:57:01 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA15554 for ; Tue, 6 May 2003 07:48:03 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19D0xV-0005Dv-00 for mmusic@ietf.org; Tue, 06 May 2003 07:50:09 -0400 Received: from sj-core-1.cisco.com ([171.71.177.237]) by ietf-mx with esmtp (Exim 4.12) id 19D0xP-0005D1-00 for mmusic@ietf.org; Tue, 06 May 2003 07:50:03 -0400 Received: from cisco.com (sjc-vpn3-57.cisco.com [10.21.64.57]) by sj-core-1.cisco.com (8.12.6/8.12.6) with ESMTP id h46Bn0Xp029854; Tue, 6 May 2003 04:49:01 -0700 (PDT) Message-ID: <3EB7A12B.C7F4F830@cisco.com> Date: Tue, 06 May 2003 07:49:00 -0400 From: Flemming Andreasen X-Mailer: Mozilla 4.79 [en]C-CCK-MCD (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Kreuter Ruediger CC: mmusic@ietf.org, Colin Perkins , rkumar@cisco.com, Joerg Ott Subject: Re: [MMUSIC] WG Last Call on draft-rajeshkumar-mmusic-gpmd-02.txt References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Kreuter Ruediger wrote: > > How about: > > ***************************************************** > When use of a "vbd" media format has been negotiated, > voice-band data SHOULD be transported using either a > "vbd" media format or another negotiated media format > suitable for transporting the voice-band data in > question. > Examples of such media formats include T.38 fax relay > and V.150 modem relay. Non-examples include G.723.1, > G.729, and PCMA/PCMU without an accompanying "vbd" > gpmd parameter. > Note that selection of specific suitable media formats > is typically done on the basis of stimuli, such as the > detection of a calling or an answer tone, a V.21 preamble > with fax flags or a modem CM signal, which may occur at > different times. > In any case RFC 2833 may be used to relay relevant data > modem and fax events. > ***************************************************** > > Regards, Ruediger > Looks good to me. -- Flemming _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Tue May 6 12:14:12 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA27823 for ; Tue, 6 May 2003 12:14:12 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h46GMj805168 for mmusic-archive@odin.ietf.org; Tue, 6 May 2003 12:22:45 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46GMj805165 for ; Tue, 6 May 2003 12:22:45 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA27780 for ; Tue, 6 May 2003 12:13:41 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19D56Y-0000I5-00 for mmusic-web-archive@ietf.org; Tue, 06 May 2003 12:15:46 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19D56Y-0000I2-00 for mmusic-web-archive@ietf.org; Tue, 06 May 2003 12:15:46 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46GMT805138; Tue, 6 May 2003 12:22:29 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46G8d803853 for ; Tue, 6 May 2003 12:08:39 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA27153 for ; Tue, 6 May 2003 11:59:36 -0400 (EDT) From: hisham.khartabil@nokia.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19D4sv-0000Av-00 for mmusic@ietf.org; Tue, 06 May 2003 12:01:41 -0400 Received: from mgw-x1.nokia.com ([131.228.20.21]) by ietf-mx with esmtp (Exim 4.12) id 19D4su-0000As-00 for mmusic@ietf.org; Tue, 06 May 2003 12:01:40 -0400 Received: from esvir01nok.ntc.nokia.com (esvir01nokt.ntc.nokia.com [172.21.143.33]) by mgw-x1.nokia.com (Switch-2.2.6/Switch-2.2.6) with ESMTP id h46G2U711881 for ; Tue, 6 May 2003 19:02:30 +0300 (EET DST) Received: from esebh001.NOE.Nokia.com (unverified) by esvir01nok.ntc.nokia.com (Content Technologies SMTPRS 4.2.5) with ESMTP id for ; Tue, 6 May 2003 19:02:30 +0300 Received: from esebe019.NOE.Nokia.com ([172.21.138.58]) by esebh001.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Tue, 6 May 2003 19:02:29 +0300 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Date: Tue, 6 May 2003 19:02:29 +0300 Message-ID: <2038BCC78B1AD641891A0D1AE133DBB7FE7574@esebe019.ntc.nokia.com> Thread-Topic: On hold when the stream is sendonly Thread-Index: AcMT6OSriPtumlySQyKcR7nIiPf5OA== To: X-OriginalArrivalTime: 06 May 2003 16:02:29.0536 (UTC) FILETIME=[E535E200:01C313E8] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h46G8d803854 Subject: [MMUSIC] On hold when the stream is sendonly Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit Hi, Apologies if this question has been addressed before. RFC3264 says: "If the stream to be placed on hold was previously a sendrecv media stream, it is placed on hold by marking it as sendonly. If the stream to be placed on hold was previously a recvonly media stream, it is placed on hold by marking it inactive." So, if the stream is sendonly, I presume that the sender simply stops sending RTP. My question is: in the 2 cases indicated in the quote above, the receiver of the media gets to learn that the other side is not going to send media on that stream anymore. But if the case I describe, the receiver will not know. Is there a way for it to know? - Does it use RTCP? - or can the sender send a new offer changing the stream from sendonly to inactive (seems a bit redundant, but its a way for the sender to inform the receiver that the stream is on hold)? What is recommended? Much appreciated, Hisham _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Tue May 6 17:03:21 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA08942 for ; Tue, 6 May 2003 17:03:20 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h46LBxv30137 for mmusic-archive@odin.ietf.org; Tue, 6 May 2003 17:11:59 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46LBx830134 for ; Tue, 6 May 2003 17:11:59 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA08917 for ; Tue, 6 May 2003 17:02:50 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19D9cM-0002UT-00 for mmusic-web-archive@ietf.org; Tue, 06 May 2003 17:04:54 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19D9cM-0002UQ-00 for mmusic-web-archive@ietf.org; Tue, 06 May 2003 17:04:54 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46LBi830088; Tue, 6 May 2003 17:11:44 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h46L8X829944 for ; Tue, 6 May 2003 17:08:33 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA08777 for ; Tue, 6 May 2003 16:59:25 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19D9Z3-0002Sc-00 for mmusic@ietf.org; Tue, 06 May 2003 17:01:29 -0400 Received: from wireless249.east.isi.edu ([65.123.202.249] helo=purple.nge.isi.edu) by ietf-mx with esmtp (Exim 4.12) id 19D9Z2-0002SZ-00 for mmusic@ietf.org; Tue, 06 May 2003 17:01:28 -0400 Received: from purple.nge.isi.edu (localhost [127.0.0.1]) by purple.nge.isi.edu (8.12.9/8.12.9) with ESMTP id h46L2GIs068759; Tue, 6 May 2003 17:02:16 -0400 (EDT) (envelope-from csp@purple.nge.isi.edu) To: Ross Finlayson cc: mmusic@ietf.org, bquinn@12.40.60.227 Subject: Re: [MMUSIC] Updated SDP "source filter" Internet Draft In-Reply-To: Your message of "Tue, 15 Apr 2003 13:26:49 PDT." <4.3.1.1.20030415132203.00c43100@laptop-localhost> Date: Tue, 06 May 2003 17:02:16 -0400 Message-ID: <68758.1052254936@purple.nge.isi.edu> From: Colin Perkins Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , --> Ross Finlayson writes: >FYI, I have just submitted an updated copy of the SDP "source filter" >draft. You can also find a copy online at > http://www.live.com/draft-mmusic-sdp-srcfilter-04.txt > >This version contains several formatting and 'I-D nit' improvements (thanks >to feedback from Magnus Westerlund and Colin Perkins), and clarifies how >source filters are applied to "c=" lines that specify multiple multicast >addresses. Thanks, this is looking good. I have one minor issue, which is that there is probably no need for an IANA sub-registry for "filter-mode" values, as the set of possible choices is fixed. The references might also be moved to be last, before the appendix. Colin _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Wed May 7 05:06:46 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA21580 for ; Wed, 7 May 2003 05:06:46 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h479FcH28889 for mmusic-archive@odin.ietf.org; Wed, 7 May 2003 05:15:38 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h479Fc828882 for ; Wed, 7 May 2003 05:15:38 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA21562 for ; Wed, 7 May 2003 05:06:15 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DKuQ-0006lC-00 for mmusic-web-archive@ietf.org; Wed, 07 May 2003 05:08:18 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19DKuP-0006l5-00 for mmusic-web-archive@ietf.org; Wed, 07 May 2003 05:08:17 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h479FS828870; Wed, 7 May 2003 05:15:28 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h479Ep828760 for ; Wed, 7 May 2003 05:14:51 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA21516 for ; Wed, 7 May 2003 05:05:27 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DKtf-0006kh-00 for mmusic@ietf.org; Wed, 07 May 2003 05:07:31 -0400 Received: from [202.104.128.171] (helo=smtp.tencent.com) by ietf-mx with esmtp (Exim 4.12) id 19DKtb-0006kc-00 for mmusic@ietf.org; Wed, 07 May 2003 05:07:28 -0400 Received: mail from tencent.com by smtp.tencent.com (8.12.9/8.12.8) with ESMTP id h478xqnO019639 for ; Wed, 7 May 2003 16:59:52 +0800 Received: from Jade (kim97.com [172.30.10.97] (may be forged)) by tencent.com (8.12.8/8.12.8) with SMTP id h4794rB2019794 for ; Wed, 7 May 2003 17:04:53 +0800 From: "Jade Chen Yan" To: Date: Wed, 7 May 2003 17:06:35 +0800 Message-ID: X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal Subject: [MMUSIC] How to transverse the symmetric NAT Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Hi, list, I am not sure this is the right place to ask such question. But I need help indeed. Suppose the scenario: A has a public IP address , B is behind a symmetric NAT. if A and B want to have a call by RTP, the call control signaling can be either H323 or SIP. B can only get the A's RTP listening port , but cannot get A's RTP sending port . So B cannot send a UDP package to A's RTP sending port first. In this case, A's RTP packets r locked down at B's NAT. (we use STUN to determine B is behind the symmetric NAT.) The solution I can get now is relay, but the TURN is resource costly. Is there any other better solution to this problem?(symmetric RTP cannot works well in the system.) Your reply will be highly appreciated. Regards, Jade begin 666 ATT00023.htm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` ` end _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Wed May 7 06:52:33 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA23226 for ; Wed, 7 May 2003 06:52:33 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h47B1TI03298 for mmusic-archive@odin.ietf.org; Wed, 7 May 2003 07:01:29 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h47B1T803294 for ; Wed, 7 May 2003 07:01:29 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA23218 for ; Wed, 7 May 2003 06:52:01 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DMYo-0007Cs-00 for mmusic-web-archive@ietf.org; Wed, 07 May 2003 06:54:06 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19DMYn-0007Cp-00 for mmusic-web-archive@ietf.org; Wed, 07 May 2003 06:54:05 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h47B1M803260; Wed, 7 May 2003 07:01:22 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h451Xg812820 for ; Sun, 4 May 2003 21:33:42 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id VAA10401 for ; Sun, 4 May 2003 21:25:11 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19CUlC-00036N-00 for mmusic@ietf.org; Sun, 04 May 2003 21:27:18 -0400 Received: from mailman.zeta.org.au ([203.26.10.16]) by ietf-mx with esmtp (Exim 4.12) id 19CUl5-00036K-00 for mmusic@ietf.org; Sun, 04 May 2003 21:27:12 -0400 Received: from ntserver.cirrus.com ([202.7.69.28]) by mailman.zeta.org.au (8.9.3p2/8.8.7) with ESMTP id LAA31259 for ; Mon, 5 May 2003 11:27:25 +1000 Received: by NTSERVER with Internet Mail Service (5.5.2650.21) id <2H4W62AX>; Mon, 5 May 2003 11:26:34 +1000 Message-ID: <4BF9643940EDD51193B70002A575466D13D11E@NTSERVER> From: Mark Hansen To: "'mmusic@ietf.org'" Date: Mon, 5 May 2003 11:26:27 +1000 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain; charset="iso-8859-1" Subject: [MMUSIC] Testing compliance to RTSP Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Hello, During the course of my work, we have developed a software system, a part of which which acts as a proxy server between a freely available video server and end user client video software. We would like to check the compliance of the server side interface to the proxy with the complete RTSP. I was wondering if anyone knew of any tools available to RTSP developers that could, by interrogation of the specified RTSP interface that has been developed, determine which parts of the protocol are being adhered to and which are not. Any information would be greatly appreciated. Mark Mark Hansen Design Engineer Cirrus Real Time Processing Systems Pty. Ltd. Level 9, 99 Elizabeth Street, Sydney, 2000 P.O. Box A2298, Sydney South 1235 AUSTRALIA Phone: +61 2 9231-2225 Fax: +61 2 9231-2252 Email: Mark.Hansen@cirrusrtps.com.au *********************************************** Cirrus wins Cisco Systems Innovation Award, and Telstra NSW Small Business of the Year 2002. See NEWS section at www.cirrusrtps.com.au *********************************************** COMMERCIAL-IN-CONFIDENCE CAUTION - This message may contain privileged and confidential information intended only for the use of the addressee named above. If you are not the intended recipient of this message you are hereby notified that any use, dissemination, distribution or reproduction of this message is prohibited. If you have received this message in error please notify Cirrus immediately. Any views expressed in this message are those of the individual sender and may not necessarily reflect the views of Cirrus. Cirrus cannot accept liability for any virus damage caused by this message. _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Wed May 7 06:53:06 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA23250 for ; Wed, 7 May 2003 06:53:05 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h47B21D03330 for mmusic-archive@odin.ietf.org; Wed, 7 May 2003 07:02:01 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h47B21803325 for ; Wed, 7 May 2003 07:02:01 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA23241 for ; Wed, 7 May 2003 06:52:34 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DMZK-0007D0-00 for mmusic-web-archive@ietf.org; Wed, 07 May 2003 06:54:38 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19DMZK-0007Cx-00 for mmusic-web-archive@ietf.org; Wed, 07 May 2003 06:54:38 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h47B1P803277; Wed, 7 May 2003 07:01:25 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h45Dfh801716 for ; Mon, 5 May 2003 09:41:43 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA01292; Mon, 5 May 2003 09:32:42 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Cg7E-0005it-00; Mon, 05 May 2003 09:34:48 -0400 Received: from mail.zrz.tu-berlin.de ([130.149.4.15]) by ietf-mx with esmtp (Exim 4.12) id 19Cg75-0005hj-00; Mon, 05 May 2003 09:34:40 -0400 Received: from mail.zrz.tu-berlin.de ([130.149.4.15]) by mail.zrz.tu-berlin.de with esmtp (exim-4.14-8) id 19Cg62-0001S8-Lz; Mon, 05 May 2003 15:33:34 +0200 Received: from mail.zrz.TU-Berlin.DE ([130.149.4.15]) by mail.zrz.TU-Berlin.DE (MailMonitor for SMTP v1.2.2 ) ; Mon, 5 May 2003 15:33:31 +0200 (CEST) Received: from ftmail.ee.tu-berlin.de ([130.149.49.250]) by mail.zrz.tu-berlin.de with esmtp (exim-4.14-8) id 19Cg5z-0001HI-KS; Mon, 05 May 2003 15:33:31 +0200 Received: from ft.ee.tu-berlin.de (ftsu34.tkn.TU-Berlin.DE [130.149.49.204]) by ftmail.ee.tu-berlin.de (8.11.3/8.11.3) with ESMTP id h45DWRB08634; Mon, 5 May 2003 15:32:27 +0200 Message-ID: <3EB669C0.5010401@ft.ee.tu-berlin.de> Date: Mon, 05 May 2003 15:40:16 +0200 From: Heike Klemz User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20030208 Netscape/7.02 X-Accept-Language: en-us, en MIME-Version: 1.0 To: klemz CC: Holger Karl Content-Type: multipart/mixed; boundary="------------080302020105080309090201" X-Virus-Scanned: Sophos MailMonitor on mail.zrz.tu-berlin.de; Mon, 05 May 2003 15:33:31 +0200 Subject: [MMUSIC] CfP:1st Europaen Workshop on WIreless Sensor Networks Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. --------------080302020105080309090201 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Dear Colleague, I would like to draw your attention to the " Frist European Workshop on Wireless Sensor Networks" Berlin, January 2004 (see Attachement). 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_______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Wed May 7 11:09:03 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA05172 for ; Wed, 7 May 2003 11:09:03 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h47FI4F25233 for mmusic-archive@odin.ietf.org; Wed, 7 May 2003 11:18:04 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h47FI3825230 for ; Wed, 7 May 2003 11:18:03 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA05149 for ; Wed, 7 May 2003 11:08:33 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DQZ2-0002CV-00 for mmusic-web-archive@ietf.org; Wed, 07 May 2003 11:10:36 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19DQZ2-0002CS-00 for mmusic-web-archive@ietf.org; Wed, 07 May 2003 11:10:36 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h47FHs825165; Wed, 7 May 2003 11:17:54 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h47FEg824965 for ; Wed, 7 May 2003 11:14:42 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA05044 for ; Wed, 7 May 2003 11:05:11 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DQVn-0002AS-00 for mmusic@ietf.org; Wed, 07 May 2003 11:07:15 -0400 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47] helo=penguin.wise.edt.ericsson.se) by ietf-mx with esmtp (Exim 4.12) id 19DQVm-0002AP-00 for mmusic@ietf.org; Wed, 07 May 2003 11:07:14 -0400 Received: from esealnt613.al.sw.ericsson.se (alteon-nat8.sw.ericsson.se [153.88.254.125]) by penguin.wise.edt.ericsson.se (8.12.9/8.12.9/WIREfire-1.6a) with ESMTP id h47F7xDW019044; Wed, 7 May 2003 17:08:00 +0200 (MEST) Received: from era.ericsson.se (research-nnng7k.ki.sw.ericsson.se [147.214.34.132]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2655.55) id K1NQHXAS; Wed, 7 May 2003 17:07:56 +0200 Message-ID: <3EB920F7.6010407@era.ericsson.se> Date: Wed, 07 May 2003 17:06:31 +0200 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Mark Hansen CC: "'mmusic@ietf.org'" Subject: Re: [MMUSIC] Testing compliance to RTSP References: <4BF9643940EDD51193B70002A575466D13D11E@NTSERVER> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Hi Mark, They may be products out there that claim that they verify RTSP compliance. However the real picture in regards to RTSP is that the specification is not clear enough to result in fully interoperable RTSP implementations. Basic interoperability has been achieved for basic playback functionality. However a number of features or behavior that are rather centric to RTSP has been implemented differently by different vendors. This is the reason that in my opinion no one can currently develop a tool that test compliance. Due to this differences we in this WG are currently working on updating the RTSP specification to something that will be possible to implement in an interoperable way. The latest version of the draft is "draft-ietf-mmusic-rfc2326bis-03.txt". This draft does not yet cover all the known issues. A list of bugs can be found at http://rtspspec.sourceforge.net. We also have teleconferences where we discuss issues and resolutions. A list of the minutes of meeting for these, see http://rtsp.org. I would recommend that you look at the changes list in the draft, the bugs and their resolutions, and what we discussed in the telecons to discover which changes we propose and areas where there has been unclearities regarding RTSP. I would also encourage you to write to this mailing list any question you have regarding RTSP issues. You are also welcome to join the RTSP telecons if you have input on anything on the agenda. Best Regards Magnus Mark Hansen wrote: >Hello, > >During the course of my work, we have developed a software system, a part of >which which acts as a proxy server between a freely available video server >and end user client video software. We would like to check the compliance of >the server side interface to the proxy with the complete RTSP. > >I was wondering if anyone knew of any tools available to RTSP developers >that could, by interrogation of the specified RTSP interface that has been >developed, determine which parts of the protocol are being adhered to and >which are not. > >Any information would be greatly appreciated. > >Mark > > >Mark Hansen >Design Engineer > >Cirrus Real Time Processing Systems Pty. Ltd. >Level 9, 99 Elizabeth Street, >Sydney, 2000 >P.O. Box A2298, >Sydney South 1235 >AUSTRALIA >Phone: +61 2 9231-2225 >Fax: +61 2 9231-2252 >Email: Mark.Hansen@cirrusrtps.com.au > >*********************************************** >Cirrus wins Cisco Systems Innovation Award, and >Telstra NSW Small Business of the Year 2002. >See NEWS section at www.cirrusrtps.com.au >*********************************************** > >COMMERCIAL-IN-CONFIDENCE > >CAUTION - This message may contain privileged and confidential information >intended only for the use of the addressee named above. If you are not the >intended recipient of this message you are hereby notified that any use, >dissemination, distribution or reproduction of this message is prohibited. >If you have received this message in error please notify Cirrus immediately. >Any views expressed in this message are those of the individual sender and >may not necessarily reflect the views of Cirrus. Cirrus cannot accept >liability for any virus damage caused by this message. > > >_______________________________________________ >mmusic mailing list >mmusic@ietf.org >https://www1.ietf.org/mailman/listinfo/mmusic > > > -- Magnus Westerlund Multimedia Technologies, Ericsson Research ERA/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 8 06:22:07 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA18960 for ; Thu, 8 May 2003 06:22:07 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h48AVV131193 for mmusic-archive@odin.ietf.org; Thu, 8 May 2003 06:31:31 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48AVU831190 for ; Thu, 8 May 2003 06:31:30 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA18957 for ; Thu, 8 May 2003 06:21:36 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DiYt-00024v-00 for mmusic-web-archive@ietf.org; Thu, 08 May 2003 06:23:39 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19DiYs-00024r-00 for mmusic-web-archive@ietf.org; Thu, 08 May 2003 06:23:38 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48AVP831174; Thu, 8 May 2003 06:31:25 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48AUb831104 for ; Thu, 8 May 2003 06:30:37 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA18942 for ; Thu, 8 May 2003 06:20:25 -0400 (EDT) From: hisham.khartabil@nokia.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DiXj-00024Y-00 for mmusic@ietf.org; Thu, 08 May 2003 06:22:27 -0400 Received: from mgw-x4.nokia.com ([131.228.20.27]) by ietf-mx with esmtp (Exim 4.12) id 19DiXi-00024V-00 for mmusic@ietf.org; Thu, 08 May 2003 06:22:26 -0400 Received: from esvir04nok.ntc.nokia.com (esvir04nokt.ntc.nokia.com [172.21.143.36]) by mgw-x4.nokia.com (Switch-2.2.6/Switch-2.2.6) with ESMTP id h48ANKD28404 for ; Thu, 8 May 2003 13:23:20 +0300 (EET DST) Received: from esebh002.NOE.Nokia.com (unverified) by esvir04nok.ntc.nokia.com (Content Technologies SMTPRS 4.2.5) with ESMTP id ; Thu, 8 May 2003 13:23:20 +0300 Received: from esebe019.NOE.Nokia.com ([172.21.138.58]) by esebh002.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Thu, 8 May 2003 13:23:19 +0300 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Date: Thu, 8 May 2003 13:23:19 +0300 Message-ID: <2038BCC78B1AD641891A0D1AE133DBB7FE7595@esebe019.ntc.nokia.com> Thread-Topic: A NIT in RFC3264 Thread-Index: AcMVS9VdkAXyAWX8TD6af8SGGWmkpQ== To: Cc: , X-OriginalArrivalTime: 08 May 2003 10:23:20.0129 (UTC) FILETIME=[D8D84B10:01C3154B] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h48AUb831112 Subject: [MMUSIC] A NIT in RFC3264 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit Section 8.3.1 says: "The offerer SHOULD NOT cease listening for media on the old port until the answer is received and media arrives on the new port." A couple of paragraphs later: "The same is true for an offerer that sends an updated offer with a new port; it MUST NOT cease listening for media on the old port until media arrives on the new port." There is a discrepancy here. I assume its a MUST NOT since the answerer behaviour is also specified as MUST NOT. Regards, Hisham _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 8 09:41:09 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA22328 for ; Thu, 8 May 2003 09:41:08 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h48Dobe13008 for mmusic-archive@odin.ietf.org; Thu, 8 May 2003 09:50:37 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48Dob813005 for ; Thu, 8 May 2003 09:50:37 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA22305 for ; Thu, 8 May 2003 09:40:38 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DlfV-0002vn-00 for mmusic-web-archive@ietf.org; Thu, 08 May 2003 09:42:41 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19DlfV-0002vk-00 for mmusic-web-archive@ietf.org; Thu, 08 May 2003 09:42:41 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48DoT812983; Thu, 8 May 2003 09:50:29 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48Dnf812935 for ; Thu, 8 May 2003 09:49:41 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA22285 for ; Thu, 8 May 2003 09:39:41 -0400 (EDT) From: hisham.khartabil@nokia.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Dleb-0002vJ-00 for mmusic@ietf.org; Thu, 08 May 2003 09:41:45 -0400 Received: from mgw-x1.nokia.com ([131.228.20.21]) by ietf-mx with esmtp (Exim 4.12) id 19DleZ-0002vB-00 for mmusic@ietf.org; Thu, 08 May 2003 09:41:44 -0400 Received: from esvir05nok.ntc.nokia.com (esvir05nokt.ntc.nokia.com [172.21.143.37]) by mgw-x1.nokia.com (Switch-2.2.6/Switch-2.2.6) with ESMTP id h48DgG729936 for ; Thu, 8 May 2003 16:42:16 +0300 (EET DST) Received: from esebh001.NOE.Nokia.com (unverified) by esvir05nok.ntc.nokia.com (Content Technologies SMTPRS 4.2.5) with ESMTP id for ; Thu, 8 May 2003 16:42:15 +0300 Received: from esebh005.NOE.Nokia.com ([172.21.138.86]) by esebh001.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Thu, 8 May 2003 16:42:14 +0300 Received: from esebe019.NOE.Nokia.com ([172.21.138.58]) by esebh005.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Thu, 8 May 2003 16:42:14 +0300 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Subject: RE: [MMUSIC] On hold when the stream is sendonly Date: Thu, 8 May 2003 16:42:14 +0300 Message-ID: <2038BCC78B1AD641891A0D1AE133DBB7FE7596@esebe019.ntc.nokia.com> Thread-Topic: On hold when the stream is sendonly Thread-Index: AcMT6OSriPtumlySQyKcR7nIiPf5OABfj9pA To: X-OriginalArrivalTime: 08 May 2003 13:42:14.0629 (UTC) FILETIME=[A25C7950:01C31567] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h48Dnf812940 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit Let me simply the question: How does A tell B that A will not send media to B on a certain media stream for a little while? Thanks, Hisham > -----Original Message----- > From: ext hisham.khartabil@nokia.com > [mailto:hisham.khartabil@nokia.com] > Sent: Tuesday, May 06, 2003 7:02 PM > To: mmusic@ietf.org > Subject: [MMUSIC] On hold when the stream is sendonly > > > Hi, > > Apologies if this question has been addressed before. > > RFC3264 says: > > "If the stream to be placed on hold was previously a sendrecv media > stream, it is placed on hold by marking it as sendonly. If the > stream to be placed on hold was previously a recvonly media stream, > it is placed on hold by marking it inactive." > > So, if the stream is sendonly, I presume that the sender > simply stops sending RTP. > > My question is: in the 2 cases indicated in the quote above, > the receiver of the media gets to learn that the other side > is not going to send media on that stream anymore. But if the > case I describe, the receiver will not know. Is there a way > for it to know? > > - Does it use RTCP? > - or can the sender send a new offer changing the stream from > sendonly to inactive (seems a bit redundant, but its a way > for the sender to inform the receiver that the stream is on hold)? > > What is recommended? > > Much appreciated, > Hisham > _______________________________________________ > mmusic mailing list > mmusic@ietf.org > https://www1.ietf.org/mailman/listinfo/mmusic > _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 8 11:37:20 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA26929 for ; Thu, 8 May 2003 11:37:20 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h48Fkqq22951 for mmusic-archive@odin.ietf.org; Thu, 8 May 2003 11:46:52 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48Fkq822948 for ; Thu, 8 May 2003 11:46:52 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA26890 for ; Thu, 8 May 2003 11:36:49 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DnTx-0003bd-00 for mmusic-web-archive@ietf.org; Thu, 08 May 2003 11:38:54 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19DnTx-0003ba-00 for mmusic-web-archive@ietf.org; Thu, 08 May 2003 11:38:53 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48Fkg822920; Thu, 8 May 2003 11:46:42 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h48Feg822614 for ; Thu, 8 May 2003 11:40:42 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA26665 for ; Thu, 8 May 2003 11:30:40 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19DnO0-0003Ys-00 for mmusic@ietf.org; Thu, 08 May 2003 11:32:44 -0400 Received: from rtp-core-1.cisco.com ([64.102.124.12]) by ietf-mx with esmtp (Exim 4.12) id 19DnNz-0003Yi-00 for mmusic@ietf.org; Thu, 08 May 2003 11:32:43 -0400 Received: from cannon.cisco.com (IDENT:mirapoint@cannon.cisco.com [161.44.118.24]) by rtp-core-1.cisco.com (8.12.6/8.12.6) with ESMTP id h48FUv0C023620 for ; Thu, 8 May 2003 11:31:09 -0400 (EDT) Received: from cisco.com ([161.44.79.220]) by cannon.cisco.com (Mirapoint) with ESMTP id ABI74719; Thu, 8 May 2003 11:39:48 -0400 (EDT) Message-ID: <3EBA7830.4020506@cisco.com> Date: Thu, 08 May 2003 11:30:56 -0400 From: Paul Kyzivat User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1) Gecko/20020826 X-Accept-Language: en-us, en MIME-Version: 1.0 To: mmusic@ietf.org Subject: Re: [MMUSIC] I-D ACTION:draft-ietf-mmusic-offer-answer-examples-00.txt References: <200304251143.HAA03579@ietf.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Alan/Robert, I just got around to reading this, and have a couple of comments. Paul 2.2 Audio and Video 2 Since Alice only supports one audio codec at a time, a second offer is made with just that one codec to limit the codec choice to just one. This seems ok but a little odd to me. In the second exchange, used to reduce to one codec, Alice also changes the port. Since the old port included the same codec, and since it is necessary to support both ports during the transition, this seems like a silly thing to do. 3.2 Hold with Two Streams Alice sends but can not receive RFC2833 tones in a separate audio stream. Bob accepts both audio streams. Bob then puts Alice's audio stream on hold but not the tone stream. Alice responds with identical SDP to the initial offer. I think this is wrong. When Bob puts Alice's audio stream on hold (a=sendonly), Alice is obligated to respond with a=recvonly, so sending the old sdp that lacks that is improper. _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Fri May 9 09:26:35 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA15131 for ; Fri, 9 May 2003 09:26:35 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h49DaWP06211 for mmusic-archive@odin.ietf.org; Fri, 9 May 2003 09:36:32 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h49DaW806207 for ; Fri, 9 May 2003 09:36:32 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA15127 for ; Fri, 9 May 2003 09:26:04 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19E7uw-0004HK-00 for mmusic-web-archive@ietf.org; Fri, 09 May 2003 09:28:06 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19E7uv-0004HG-00 for mmusic-web-archive@ietf.org; Fri, 09 May 2003 09:28:05 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h49DaK806198; Fri, 9 May 2003 09:36:20 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h49DZv806163 for ; Fri, 9 May 2003 09:35:57 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA15111 for ; Fri, 9 May 2003 09:25:29 -0400 (EDT) From: Rod.Walsh@nokia.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19E7uN-0004H2-00 for mmusic@ietf.org; Fri, 09 May 2003 09:27:31 -0400 Received: from mgw-x4.nokia.com ([131.228.20.27]) by ietf-mx with esmtp (Exim 4.12) id 19E7uL-0004Gz-00 for mmusic@ietf.org; Fri, 09 May 2003 09:27:30 -0400 Received: from esvir03nok.nokia.com (esvir03nokt.ntc.nokia.com [172.21.143.35]) by mgw-x4.nokia.com (Switch-2.2.6/Switch-2.2.6) with ESMTP id h49DSPD01974 for ; Fri, 9 May 2003 16:28:25 +0300 (EET DST) Received: from esebh001.NOE.Nokia.com (unverified) by esvir03nok.nokia.com (Content Technologies SMTPRS 4.2.5) with ESMTP id ; Fri, 9 May 2003 16:28:24 +0300 Received: from esebe004.NOE.Nokia.com ([172.21.138.44]) by esebh001.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Fri, 9 May 2003 16:28:24 +0300 Received: from trebe003.NOE.Nokia.com ([172.22.232.175]) by esebe004.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Fri, 9 May 2003 16:28:22 +0300 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Subject: RE: [MMUSIC] Experiences with Media Discovery (for IMG) Date: Fri, 9 May 2003 16:28:21 +0300 Message-ID: <2BF0AD29BC31FE46B78877321144043101B9E34B@trebe003.europe.nokia.com> Thread-Topic: [MMUSIC] Experiences with Media Discovery (for IMG) Thread-Index: AcMQwRiRbcHnfw70QjObJqfinT5ecwEblvbQ To: Cc: , , , , , , X-OriginalArrivalTime: 09 May 2003 13:28:22.0125 (UTC) FILETIME=[DC9031D0:01C3162E] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h49DZx806164 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit Hi Hitoshi Thanks for your link, your article is very interesting. There are many issues you cover which are easy to formulate into the requirements and use cases for IMG. So it will be great to collaborate on this issue. I see you have made some broad conclusions along the same lines of my thinking: * SAP is not sufficient and often not suitable, especially due to scalability and reliability issues * XML is a good basis for content descriptions * SSM is a particularly important use case * HTTP is sufficient for fetching metadata And, your general requirements (scalability, easy deployment, flexible policy and scope controls, conformance to SSM-only network) are important for IMG. Could you paraphrase you requirements and use cases so I can practically "cut & paste" into an ID? (Or you could submit an ID on requirements, for later aggregation to IMG, as DVB-IPI did for their considerations). Also, you in depth analysis on SSM requirements would be of great benefit to IMG, so please contribute! Some exclusions which IMG needs to cover "system-wide" in addition are: * It is also desirable to support ASM "media description" and metadata delivery * Some of our use cases mandate the use of unidirectional multicast delivery (IP broadcast including broadcast radio access) I very much like your categorization of multicast session discovery approaches: "invitation model", "announcement model" and "session directory model". After working with a few methods, I came to the conclusion that "one-size-fits-all" is close to fitting square pegs in small hexagonal holes (you get the idea), so our aim is to limit the baseline IMG specification to the minimum number of methods for all general sizes (hence a p-t-m and a p-t-p ID). I guess the only obstacle to including the invitation and session directory models in the same p-t-p ID is the choice of protocols. We should discuss this further - any ideas? I am not quite sure how you partition your metadata to allow a host to get specific entries from a CR (or indeed the CR to select the entries to send and how to group those entries) - can you explain (apologies if I missed this in the text). There is still a great need to delimit and scope IMG so it is not possible to make too many certain conclusions on what IMG will be until specific items are accepted to the MMUSIC charter. In particular, we have use cases where metadata MUST be delivered by unidirectional multicast and others where it must be delivered over unicast, and there should be individually submitted IDs on both p-t-m (MUPPET+1) and p-t-p (00) available for discussion by IETF-57. These currently represent our best effort and it is highly desirable to get more contribution on these, identify if others are needed and deal with making IMG extensible for application beyond IETF transport area. In this sense I understand the error in your paper... " Internet Media Guides (IMGs) [8] has been recently proposed in IETF MMUSIC WG. IMGs allow users to initiate streaming media sessions, schedule delivery of downloadable or multicast content or listen to live multicast sessions. The fact that it relies on WWW collaboration schemes and that it creates a media directory system for the Internet is very interesting. Unfortunately, however, there is no concrete architecture yet and it does not provide any eective scoping technique or policy management whereas we consider these aspect as central to our own needs. Furthermore, since there is no realistic protocol design, it seems that SAP will be used continuously. " ...I very much doubt that we could justify using SAP continuously (and have little desire to do so). Also, I would appreciate it if you could give requirements on the architectures. Our current view is along the lines of "generic enough to handle most IP-based architectures, and including proxies, etc. is wanted". And, any improvements you can contribute to the evolving MUPPET (etc) to make it a more realist protocol design would be much appreciated :) Of course you are right that the current IMG contributes are not sufficient for all the current requirements, but I hope you are encouraged to help out in this work-in-progress. Certainly, your ideas on policy control and scope control could be very useful for a "better-than-SAP" announcement protocol implementation - as in MUPPET (in addition to the p-t-p case). Cheers (and have a great weekend), Rod. > -----Original Message----- > From: ext Hitoshi Asaeda [mailto:Hitoshi.Asaeda@sophia.inria.fr] > Sent: Friday, May 02, 2003 6:39 PM > To: Walsh Rod (NRC/Tampere) > Cc: mmusic@ietf.org; nom@flab.fujitsu.co.jp; > hgs@cs.columbia.edu; Luoma > Juha-Pekka (NRC/Tampere); pstallard@tandbergtv.com; Paila Toni > (NVO/Helsinki); jo@informatik.uni-bremen.de > Subject: Re: [MMUSIC] Experiences with Media Discovery (for IMG) > > > Hi Rod. > > > I really need to find out about YOUR experience in media > > announcements and descriptor delivery. SDP and SAP love and hate > > knowledge as well as moving the metadata point-to-point (FTP, HTTP > > are pretty well used) and new work (SIP, SDPng, etc.) are very > > important so we can put together a picture of what a really needed > > by our IP world. Ultimately, our purpose is to be able to specify > > really useful protocols, etc. as IDs -> RFCs. But first we have a > > basic goal to compile: > > I've put a draft version of my paper related to this discussion before > the last IETF. > Our new "channel announcement mechamism" is called "Channel > Reflector". > The purpose of this proposal is to provide a feasible channel > announcement mechanism for SSM environment without using SAP > advertisement. By using Channel Reflector, we can eliminate source > discovery procedure from multicast service model. > Some parts of the idea can be overwrapped to IMG, therefore we may be > able to collaborate. > > If you are interested in, you'd be able to get it from; > . > > Any comment would be appreciate. > > Thanks. > -- > Hitoshi Asaeda > _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Mon May 12 03:23:09 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA04049 for ; Mon, 12 May 2003 03:23:09 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4C6mZV32552 for mmusic-archive@odin.ietf.org; Mon, 12 May 2003 02:48:35 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4C6mZB32549 for ; Mon, 12 May 2003 02:48:35 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA04044 for ; Mon, 12 May 2003 03:22:38 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19F7fq-0005kD-00 for mmusic-web-archive@ietf.org; Mon, 12 May 2003 03:24:38 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19F7fp-0005k9-00 for mmusic-web-archive@ietf.org; Mon, 12 May 2003 03:24:37 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4C6mSB32537; Mon, 12 May 2003 02:48:28 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4C6lRB32500 for ; Mon, 12 May 2003 02:47:27 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id DAA04033 for ; Mon, 12 May 2003 03:20:50 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19F7e5-0005jn-00 for mmusic@ietf.org; Mon, 12 May 2003 03:22:49 -0400 Received: from esafe.emblaze.com ([212.68.150.132] helo=embexcil01.emblaze.ent) by ietf-mx with smtp (Exim 4.12) id 19F7e5-0005jj-00 for mmusic@ietf.org; Mon, 12 May 2003 03:22:49 -0400 Received: through eSafe SMTP Relay 1049412259; Mon May 12 10:21:13 2003 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Subject: RE: [MMUSIC] Testing compliance to RTSP Date: Mon, 12 May 2003 10:20:44 +0300 Message-ID: <980C7B879697C7448A54C9B065AAFAAC776AFD@embexcil01.emblaze.ent> Thread-Topic: [MMUSIC] Testing compliance to RTSP Thread-Index: AcMUq/7xzMeto0BxSIOLwq1zrocCPwDqj6sA From: "Amir Wolf" To: "Magnus Westerlund" , "Mark Hansen" Cc: Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h4C6lSB32502 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit Magnus, As one that is active in an interoperability group , we had also some discussion about compliance and interoperate - these are 2 different things - Interoperability is achieved by some vendors who understand in the same way the standard - it does not mean that they implement it all and that they are compliant, but together they will work perfect. so basically I am against giving any compliance certifications since practically I believe that there is no fully compliant system living out there today. > -----Original Message----- > From: Magnus Westerlund [mailto:magnus.westerlund@era.ericsson.se] > Sent: Wednesday, May 07, 2003 6:07 PM > To: Mark Hansen > Cc: 'mmusic@ietf.org' > Subject: Re: [MMUSIC] Testing compliance to RTSP > > > Hi Mark, > > They may be products out there that claim that they verify RTSP > compliance. However the real picture in regards to RTSP is that the > specification is not clear enough to result in fully > interoperable RTSP > implementations. Basic interoperability has been achieved for basic > playback functionality. However a number of features or behavior that > are rather centric to RTSP has been implemented differently > by different > vendors. This is the reason that in my opinion no one can currently > develop a tool that test compliance. > > Due to this differences we in this WG are currently working > on updating > the RTSP specification to something that will be possible to > implement > in an interoperable way. The latest version of the draft is > "draft-ietf-mmusic-rfc2326bis-03.txt". This draft does not > yet cover all > the known issues. A list of bugs can be found at > http://rtspspec.sourceforge.net. We also have teleconferences > where we > discuss issues and resolutions. A list of the minutes of meeting for > these, see http://rtsp.org. I would recommend that you look at the > changes list in the draft, the bugs and their resolutions, > and what we > discussed in the telecons to discover which changes we > propose and areas > where there has been unclearities regarding RTSP. I would > also encourage > you to write to this mailing list any question you have > regarding RTSP > issues. You are also welcome to join the RTSP telecons if you > have input > on anything on the agenda. > > Best Regards > > Magnus > > Mark Hansen wrote: > > >Hello, > > > >During the course of my work, we have developed a software > system, a part of > >which which acts as a proxy server between a freely > available video server > >and end user client video software. We would like to check > the compliance of > >the server side interface to the proxy with the complete RTSP. > > > >I was wondering if anyone knew of any tools available to > RTSP developers > >that could, by interrogation of the specified RTSP interface > that has been > >developed, determine which parts of the protocol are being > adhered to and > >which are not. > > > >Any information would be greatly appreciated. > > > >Mark > > > > > >Mark Hansen > >Design Engineer > > > >Cirrus Real Time Processing Systems Pty. Ltd. > >Level 9, 99 Elizabeth Street, > >Sydney, 2000 > >P.O. Box A2298, > >Sydney South 1235 > >AUSTRALIA > >Phone: +61 2 9231-2225 > >Fax: +61 2 9231-2252 > >Email: Mark.Hansen@cirrusrtps.com.au > > > >*********************************************** > >Cirrus wins Cisco Systems Innovation Award, and > >Telstra NSW Small Business of the Year 2002. > >See NEWS section at www.cirrusrtps.com.au > >*********************************************** > > > >COMMERCIAL-IN-CONFIDENCE > > > >CAUTION - This message may contain privileged and > confidential information > >intended only for the use of the addressee named above. If > you are not the > >intended recipient of this message you are hereby notified > that any use, > >dissemination, distribution or reproduction of this message > is prohibited. > >If you have received this message in error please notify > Cirrus immediately. > >Any views expressed in this message are those of the > individual sender and > >may not necessarily reflect the views of Cirrus. Cirrus cannot accept > >liability for any virus damage caused by this message. > > > > > >_______________________________________________ > >mmusic mailing list > >mmusic@ietf.org > >https://www1.ietf.org/mailman/listinfo/mmusic > > > > > > > > -- > > Magnus Westerlund > > Multimedia Technologies, Ericsson Research ERA/TVA/A > ---------------------------------------------------------------------- > Ericsson AB | Phone +46 8 4048287 > Torshamsgatan 23 | Fax +46 8 7575550 > S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se > > > > _______________________________________________ > mmusic mailing list > mmusic@ietf.org > https://www1.ietf.org/mailman/listinfo/mmusic > ************************************************************************************************** The contents of this email and any attachments are confidential. It is intended for the named recipient(s) only. If you have received this email in error please notify the system manager or the sender immediately and do not disclose the contents to any one or make copies. ** eSafe scanned this email for viruses, vandals and malicious content ** ************************************************************************************************** _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Mon May 12 06:47:56 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA07608 for ; Mon, 12 May 2003 06:47:56 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4CADQ514959 for mmusic-archive@odin.ietf.org; Mon, 12 May 2003 06:13:26 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CADPB14956 for ; Mon, 12 May 2003 06:13:25 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA07599 for ; Mon, 12 May 2003 06:47:25 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19FAs0-0006jT-00 for mmusic-web-archive@ietf.org; Mon, 12 May 2003 06:49:24 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19FArz-0006jQ-00 for mmusic-web-archive@ietf.org; Mon, 12 May 2003 06:49:23 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CADJB14946; Mon, 12 May 2003 06:13:19 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CACFB14921 for ; Mon, 12 May 2003 06:12:15 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA07590 for ; Mon, 12 May 2003 06:46:15 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19FAqs-0006jM-00 for mmusic@ietf.org; Mon, 12 May 2003 06:48:14 -0400 Received: from albatross-ext.wise.edt.ericsson.se ([193.180.251.49] helo=albatross.tn.sw.ericsson.se) by ietf-mx with esmtp (Exim 4.12) id 19FAqr-0006jJ-00 for mmusic@ietf.org; Mon, 12 May 2003 06:48:13 -0400 Received: from esealnt611.al.sw.ericsson.se (alteon-nat4.sw.ericsson.se [153.88.254.121]) by albatross.tn.sw.ericsson.se (8.12.9/8.12.9/WIREfire-1.6a) with ESMTP id h4CAmx0J022495; Mon, 12 May 2003 12:48:59 +0200 (MEST) Received: from era.ericsson.se (research-nnng7k.ki.sw.ericsson.se [147.214.34.132]) by esealnt611.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2655.55) id KTWLLGK1; Mon, 12 May 2003 12:49:06 +0200 Message-ID: <3EBF7BB7.2070000@era.ericsson.se> Date: Mon, 12 May 2003 12:47:19 +0200 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Amir Wolf CC: Mark Hansen , mmusic@ietf.org Subject: Re: [MMUSIC] Testing compliance to RTSP References: <980C7B879697C7448A54C9B065AAFAAC776AFD@embexcil01.emblaze.ent> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Hi Amir, I can agree with you that there is differnce between compliance and interoperability. In the end, it is the interoperability that is important. However I hope that you agree that interoperability is easier to accomplish if one is tries to be compliant with a standard. This as long as everyone agree what compliant means in regards to protocol actions. My point being, due to the many shortcommings in the RTSP specification there is hard to achieve a common view that one can be compliant against. Regards Magnus Amir Wolf wrote: >Magnus, > >As one that is active in an interoperability group , we had also some discussion about compliance and interoperate - these are 2 different things - Interoperability is achieved by some vendors who understand in the same way the standard - it does not mean that they implement it all and that they are compliant, but together they will work perfect. > >so basically I am against giving any compliance certifications since practically I believe that there is no fully compliant system living out there today. > > > >>-----Original Message----- >>From: Magnus Westerlund [mailto:magnus.westerlund@era.ericsson.se] >>Sent: Wednesday, May 07, 2003 6:07 PM >>To: Mark Hansen >>Cc: 'mmusic@ietf.org' >>Subject: Re: [MMUSIC] Testing compliance to RTSP >> >> >>Hi Mark, >> >>They may be products out there that claim that they verify RTSP >>compliance. However the real picture in regards to RTSP is that the >>specification is not clear enough to result in fully >>interoperable RTSP >>implementations. Basic interoperability has been achieved for basic >>playback functionality. However a number of features or behavior that >>are rather centric to RTSP has been implemented differently >>by different >>vendors. This is the reason that in my opinion no one can currently >>develop a tool that test compliance. >> >>Due to this differences we in this WG are currently working >>on updating >>the RTSP specification to something that will be possible to >>implement >>in an interoperable way. The latest version of the draft is >>"draft-ietf-mmusic-rfc2326bis-03.txt". This draft does not >>yet cover all >>the known issues. A list of bugs can be found at >>http://rtspspec.sourceforge.net. We also have teleconferences >>where we >>discuss issues and resolutions. A list of the minutes of meeting for >>these, see http://rtsp.org. I would recommend that you look at the >>changes list in the draft, the bugs and their resolutions, >>and what we >>discussed in the telecons to discover which changes we >>propose and areas >>where there has been unclearities regarding RTSP. I would >>also encourage >>you to write to this mailing list any question you have >>regarding RTSP >>issues. You are also welcome to join the RTSP telecons if you >>have input >>on anything on the agenda. >> >>Best Regards >> >>Magnus >> >>Mark Hansen wrote: >> >> >> >>>Hello, >>> >>>During the course of my work, we have developed a software >>> >>> >>system, a part of >> >> >>>which which acts as a proxy server between a freely >>> >>> >>available video server >> >> >>>and end user client video software. We would like to check >>> >>> >>the compliance of >> >> >>>the server side interface to the proxy with the complete RTSP. >>> >>>I was wondering if anyone knew of any tools available to >>> >>> >>RTSP developers >> >> >>>that could, by interrogation of the specified RTSP interface >>> >>> >>that has been >> >> >>>developed, determine which parts of the protocol are being >>> >>> >>adhered to and >> >> >>>which are not. >>> >>>Any information would be greatly appreciated. >>> >>>Mark >>> >>> >>>Mark Hansen >>>Design Engineer >>> >>>Cirrus Real Time Processing Systems Pty. Ltd. >>>Level 9, 99 Elizabeth Street, >>>Sydney, 2000 >>>P.O. Box A2298, >>>Sydney South 1235 >>>AUSTRALIA >>>Phone: +61 2 9231-2225 >>>Fax: +61 2 9231-2252 >>>Email: Mark.Hansen@cirrusrtps.com.au >>> >>>*********************************************** >>>Cirrus wins Cisco Systems Innovation Award, and >>>Telstra NSW Small Business of the Year 2002. >>>See NEWS section at www.cirrusrtps.com.au >>>*********************************************** >>> >>>COMMERCIAL-IN-CONFIDENCE >>> >>>CAUTION - This message may contain privileged and >>> >>> >>confidential information >> >> >>>intended only for the use of the addressee named above. If >>> >>> >>you are not the >> >> >>>intended recipient of this message you are hereby notified >>> >>> >>that any use, >> >> >>>dissemination, distribution or reproduction of this message >>> >>> >>is prohibited. >> >> >>>If you have received this message in error please notify >>> >>> >>Cirrus immediately. >> >> >>>Any views expressed in this message are those of the >>> >>> >>individual sender and >> >> >>>may not necessarily reflect the views of Cirrus. Cirrus cannot accept >>>liability for any virus damage caused by this message. >>> >>> >>>_______________________________________________ >>>mmusic mailing list >>>mmusic@ietf.org >>>https://www1.ietf.org/mailman/listinfo/mmusic >>> >>> >>> >>> >>> >>-- >> >>Magnus Westerlund >> >>Multimedia Technologies, Ericsson Research ERA/TVA/A >>---------------------------------------------------------------------- >>Ericsson AB | Phone +46 8 4048287 >>Torshamsgatan 23 | Fax +46 8 7575550 >>S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se >> >> >> >>_______________________________________________ >>mmusic mailing list >>mmusic@ietf.org >>https://www1.ietf.org/mailman/listinfo/mmusic >> >> >> > >************************************************************************************************** >The contents of this email and any attachments are confidential. >It is intended for the named recipient(s) only. >If you have received this email in error please notify the system manager or the >sender immediately and do not disclose the contents to any one or make copies. > >** eSafe scanned this email for viruses, vandals and malicious content ** >************************************************************************************************** > > > -- Magnus Westerlund Multimedia Technologies, Ericsson Research ERA/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Mon May 12 07:36:44 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA08939 for ; Mon, 12 May 2003 07:36:44 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4CB2ER17809 for mmusic-archive@odin.ietf.org; Mon, 12 May 2003 07:02:14 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CB2EB17806 for ; Mon, 12 May 2003 07:02:14 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA08919 for ; Mon, 12 May 2003 07:36:13 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19FBdE-0006zm-00 for mmusic-web-archive@ietf.org; Mon, 12 May 2003 07:38:12 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19FBdD-0006ze-00 for mmusic-web-archive@ietf.org; Mon, 12 May 2003 07:38:11 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CB26B17797; Mon, 12 May 2003 07:02:06 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CB1pB17782 for ; Mon, 12 May 2003 07:01:51 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA08916 for ; Mon, 12 May 2003 07:35:50 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19FBcr-0006za-00 for mmusic@ietf.org; Mon, 12 May 2003 07:37:49 -0400 Received: from penguin-ext.wise.edt.ericsson.se ([193.180.251.47] helo=penguin.wise.edt.ericsson.se) by ietf-mx with esmtp (Exim 4.12) id 19FBcq-0006zW-00 for mmusic@ietf.org; Mon, 12 May 2003 07:37:48 -0400 Received: from esealnt613.al.sw.ericsson.se (alteon-nat8.sw.ericsson.se [153.88.254.125]) by penguin.wise.edt.ericsson.se (8.12.9/8.12.9/WIREfire-1.6a) with ESMTP id h4CBcnDW026063 for ; Mon, 12 May 2003 13:38:49 +0200 (MEST) Received: from era.ericsson.se (research-nnng7k.ki.sw.ericsson.se [147.214.34.132]) by esealnt613.al.sw.ericsson.se with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2655.55) id KT46105Z; Mon, 12 May 2003 13:38:44 +0200 Message-ID: <3EBF8765.2000403@era.ericsson.se> Date: Mon, 12 May 2003 13:37:09 +0200 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Magnus Westerlund User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 X-Accept-Language: en-us, en MIME-Version: 1.0 To: IETF MMUSIC WG Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Subject: [MMUSIC] RTSP telecon - Agenda 14th of May Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Hi, Here is the agenda for the RTSP telecon on wednesday the 14th of May. It starts at 18.00 CET (GMT+2). If you are not a member of the RTSP logistics and have not received the details of the telecon, please send me a mail. --------- Agenda 030514 18.00 CET (GMT+2) 1. Opening of meeting. 2. Since last meeting (16th of April). a. http://rtsp.org/bug513737 - Waiting for write up. b. Bug 533691 & 513880 - Waiting for updated text after resolution of issues. c. http://rtsp.org/bug556295 - Thomas to write text. d. Multiple SSRC in RTSP. - Aravind to write updated text. 3. New Things a. http://rtsp.org/bug631957 Use of # and ? in RTSP URLs? b. http://rtsp.org/bug633779 SET_PARAMETER responses. c. http://rtsp.org/bug634944 Restarting media not allowing seek d. http://rtsp.org/bug640265 Extension of Transport header e. http://rtsp.org/bug640272 Default way of deriving aggregate URL f. http://rtsp.org/bug662436 RTP/AVP/TCP w/o interleaved g. The use of ";" in the specification - Tom Marshall. 4. Administrative a. Phase 2 of the work. Getting text into shape. 5. Any other Issues 6. Next meeting - Proposal: 28th of May 7. End meeting -- Best Regards Magnus Westerlund Multimedia Technologies, Ericsson Research ERA/TVA/A ---------------------------------------------------------------------- Ericsson AB | Phone +46 8 4048287 Torshamsgatan 23 | Fax +46 8 7575550 S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Mon May 12 10:33:41 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA16204 for ; Mon, 12 May 2003 10:33:41 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4CDxFY32404 for mmusic-archive@odin.ietf.org; Mon, 12 May 2003 09:59:15 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CDxFB32401 for ; Mon, 12 May 2003 09:59:15 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA16145 for ; Mon, 12 May 2003 10:33:10 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19FEOS-0000rQ-00 for mmusic-web-archive@ietf.org; Mon, 12 May 2003 10:35:08 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19FEOR-0000rN-00 for mmusic-web-archive@ietf.org; Mon, 12 May 2003 10:35:07 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CDxAB32391; Mon, 12 May 2003 09:59:10 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4CDwMB32350 for ; Mon, 12 May 2003 09:58:22 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA16101 for ; Mon, 12 May 2003 10:32:18 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19FENc-0000r5-00 for mmusic@ietf.org; Mon, 12 May 2003 10:34:16 -0400 Received: from sophia.inria.fr ([138.96.64.20]) by ietf-mx with esmtp (Exim 4.12) id 19FENb-0000pp-00 for mmusic@ietf.org; Mon, 12 May 2003 10:34:15 -0400 Received: from localhost (odie.inria.fr [138.96.88.52]) by sophia.inria.fr (8.12.8/8.12.5) with ESMTP id h4CEYlNb021153; Mon, 12 May 2003 16:34:47 +0200 Date: Mon, 12 May 2003 16:34:46 +0200 (MEST) Message-Id: <20030512.163446.43393566.Hitoshi.Asaeda@sophia.inria.fr> To: Rod.Walsh@nokia.com Cc: mmusic@ietf.org Subject: Re: [MMUSIC] Experiences with Media Discovery (for IMG) From: Hitoshi Asaeda In-Reply-To: <2BF0AD29BC31FE46B78877321144043101B9E34B@trebe003.europe.nokia.com> References: <2BF0AD29BC31FE46B78877321144043101B9E34B@trebe003.europe.nokia.com> X-Mailer: Mew version 2.2rc1 on Emacs 21.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit Rod, > Thanks for your link, your article is very interesting. There are > many issues you cover which are easy to formulate into the > requirements and use cases for IMG. So it will be great to > collaborate on this issue. Thanks for your faborable reply. > And, your general requirements (scalability, easy deployment, > flexible policy and scope controls, conformance to SSM-only network) > are important for IMG. Could you paraphrase you requirements and use > cases so I can practically "cut & paste" into an ID? (Or you could > submit an ID on requirements, for later aggregation to IMG, as > DVB-IPI did for their considerations). At the beginning, I'd like to ask you about the current situation about IMG. To be honest, I have a feeling IMG's draft doesn't give us the concreat architecture. I know this is because the current I-D is a framework draft, but it would not be sufficient for the point of the implementation and deployment. > Also, you in depth analysis on SSM requirements would be of great > benefit to IMG, so please contribute! Fine. I'll consider that Channel Reflector (CR) should be included in the IMG's draft or mentioned in a new one. At this moment, I think separate draft may be better, in order to categorize each draft as a "framework" draft and a "architectural" draft (like MUPPET?). > I am not quite sure how you partition your metadata to allow a host > to get specific entries from a CR (or indeed the CR to select the > entries to send and how to group those entries) - can you explain > (apologies if I missed this in the text). Are you talking about the method to validate or classify data sender/receiver? If so, it's not mentioned in my paper, since I think it depends on the implementation and there are several possibilities. But such information (that I mentioned in Sect. 5.2 and 5.3) maintained by CR can include the key word to handle it as its basic components. If this is not your answer, please tell me. Thanks. -- Hitoshi Asaeda _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Wed May 14 04:56:00 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA09817 for ; Wed, 14 May 2003 04:56:00 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4E8MQW25303 for mmusic-archive@odin.ietf.org; Wed, 14 May 2003 04:22:26 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4E8MQB25299 for ; Wed, 14 May 2003 04:22:26 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA09799 for ; Wed, 14 May 2003 04:55:29 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Fs4j-0003oe-00 for mmusic-web-archive@ietf.org; Wed, 14 May 2003 04:57:25 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19Fs4j-0003oa-00 for mmusic-web-archive@ietf.org; Wed, 14 May 2003 04:57:25 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4E8MLB25283; Wed, 14 May 2003 04:22:21 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4E8LgB25250 for ; Wed, 14 May 2003 04:21:42 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA09786 for ; Wed, 14 May 2003 04:54:45 -0400 (EDT) From: Rod.Walsh@nokia.com Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Fs41-0003oK-00 for mmusic@ietf.org; Wed, 14 May 2003 04:56:41 -0400 Received: from mgw-x1.nokia.com ([131.228.20.21]) by ietf-mx with esmtp (Exim 4.12) id 19Fs40-0003oH-00 for mmusic@ietf.org; Wed, 14 May 2003 04:56:40 -0400 Received: from esvir05nok.ntc.nokia.com (esvir05nokt.ntc.nokia.com [172.21.143.37]) by mgw-x1.nokia.com (Switch-2.2.6/Switch-2.2.6) with ESMTP id h4E8vj714565 for ; Wed, 14 May 2003 11:57:45 +0300 (EET DST) Received: from esebh004.NOE.Nokia.com (unverified) by esvir05nok.ntc.nokia.com (Content Technologies SMTPRS 4.2.5) with ESMTP id ; Wed, 14 May 2003 11:57:45 +0300 Received: from esebe015.NOE.Nokia.com ([172.21.138.54]) by esebh004.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Wed, 14 May 2003 11:57:45 +0300 Received: from trebe003.NOE.Nokia.com ([172.22.232.175]) by esebe015.NOE.Nokia.com with Microsoft SMTPSVC(5.0.2195.6139); Wed, 14 May 2003 11:57:44 +0300 X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Subject: RE: [MMUSIC] Experiences with Media Discovery (for IMG) Date: Wed, 14 May 2003 11:57:34 +0300 Message-ID: <2BF0AD29BC31FE46B78877321144043102F7C6FC@trebe003.europe.nokia.com> Thread-Topic: [MMUSIC] Experiences with Media Discovery (for IMG) Thread-Index: AcMYk7fUpGAQRwx8RVSgP2DvLTIfQQAx9KWg To: Cc: X-OriginalArrivalTime: 14 May 2003 08:57:44.0705 (UTC) FILETIME=[E25F4710:01C319F6] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by www1.ietf.org id h4E8LgB25251 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 8bit Content-Transfer-Encoding: 8bit Hi Hitoshi see in-line... > At the beginning, I'd like to ask you about the current situation > about IMG. We currently have 3 individual drafts relating to requirements and framework which are excellent input material, now we need more input material from anyone who is working or is interested in this area. When we discussed the media discovery with the IETF Transport Area Directors we had anticipated talking protocol needs, but they made it clear that first up was that the requirements and use cases and a framework of how to use _existing_ protocols for these should come from the working group. To enable the broadest possible contribution to this area and provide natural justification for any specific work items that are needed, this makes a lot of sense. Our goal for IMG is to get open and interoperable IETF standards for our IP-domain problems of delivering descriptions of multicast media and make sure that anyone trying to implement IMG has sufficient specification to do this and be interoperable. Because of this, we can anticipate some of the specific work items (e.g. the MUPPET protocol) that will be identified, but I'm trying to limit my field of view to the initial two IDs for now so we get progress. The exact work that MMUSIC will pursue and support must be on its charter first, so I'm not being too specific at the moment (thought the IETF-56 IMG presentation is still alive and highly relevant). > To be honest, I have a feeling IMG's draft doesn't give us the > concreat architecture. I know this is because the current I-D is a > framework draft, but it would not be sufficient for the point of the > implementation and deployment. Totally correct. The current drafts around IMG (and pguide before it) are neither sufficient nor finished. I hope the authors will get comments to influence them as they develop towards completion. The end point for IMG must be a set of standards that allow interoperable implementations and we're some way from that yet. In this sense, it would be fantastic if you would contribute ideas and material to help make IMG work. Your paper on Channel Reflectors had very many good observations and ideas which should feed naturally into the IMG food chain. > I'll consider that Channel Reflector (CR) should be included in the > IMG's draft or mentioned in a new one. At this moment, I think > separate draft may be better, in order to categorize each draft as a > "framework" draft and a "architectural" draft (like MUPPET?). For the purpose of communicating the idea, a separate draft is a great idea - I'm looking forward to it! > > I am not quite sure how you partition your metadata to allow a host > > to get specific entries from a CR (or indeed the CR to select the > > entries to send and how to group those entries) - can you explain > > (apologies if I missed this in the text). > Are you talking about the method to validate or classify data > sender/receiver? If so, it's not mentioned in my paper, since I think > it depends on the implementation and there are several possibilities. > But such information (that I mentioned in Sect. 5.2 and 5.3) > maintained by CR can include the key word to handle it as its basic > components. > If this is not your answer, please tell me. I get the feeling that it was my answer :) Luoma's metadata ID (draft-luoma-mmusic-img-metadata-00) describes "metadata elements" and "content bundles" (among others), which could be used to identify a specific grouping of metadata. This metadata grouping is important, especially, for metadata management so that hosts can deal with expiry and renewal etc. Of course, it's also useful for the simple stuff like identifying the metadata for a certain media stream. In the context of your Channel Reflector paper, you'll need some information (an HTTP URL I guess) to go and grab the metadata, but still we need to partition the metadata. For instance, fetching a full 6GB database may not be the most fun since space travel. Still fetching each single entry one by one may be rather laborious - and surely scalability arguments abound for both cases. Thus, by grouping/partitioning the metadata (and identifying that set of data), fetching it becomes more useful. If you have an ideas or work in this area, it would be good to hear them too. I'm looking forward to seeing your use cases and requirements appear on the reflector soon! Cheers, Rod. > Thanks. > -- > Hitoshi Asaeda > _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 29 07:30:58 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA27356 for ; Thu, 29 May 2003 07:30:58 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4TBUTp12580 for mmusic-archive@odin.ietf.org; Thu, 29 May 2003 07:30:29 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4TBUTB12577 for ; Thu, 29 May 2003 07:30:29 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA27302 for ; Thu, 29 May 2003 07:30:28 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19LLaU-0005Yl-00 for mmusic-web-archive@ietf.org; Thu, 29 May 2003 07:28:50 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19LLaT-0005Yh-00 for mmusic-web-archive@ietf.org; Thu, 29 May 2003 07:28:49 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4TBUJB12498; Thu, 29 May 2003 07:30:19 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4TBKFB12029 for ; Thu, 29 May 2003 07:20:15 -0400 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id HAA26913; Thu, 29 May 2003 07:20:13 -0400 (EDT) Message-Id: <200305291120.HAA26913@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: IETF-Announce: ; Cc: mmusic@ietf.org From: Internet-Drafts@ietf.org Reply-to: Internet-Drafts@ietf.org Date: Thu, 29 May 2003 07:20:13 -0400 Subject: [MMUSIC] I-D ACTION:draft-ietf-mmusic-sdp-bwparam-03.txt Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiparty Multimedia Session Control Working Group of the IETF. Title : A Transport Independent Bandwidth Modifier for the Session Description Protocol (SDP) Author(s) : M. Westerlund Filename : draft-ietf-mmusic-sdp-bwparam-03.txt Pages : 17 Date : 2003-5-28 The existing Session Description Protocol (SDP) bandwidth modifiers and their values include the bandwidth needed also for the transport and IP layers. When using SDP with protocols like the Session Announcement Protocol (SAP), the Session Initiation Protocol (SIP) and the Real-Time Streaming Protocol (RTSP) and when the involved hosts reside in networks running different IP versions, the interpretation of what lower layer bandwidths are included is not clear. This document defines a bandwidth modifier that does not include transport overhead; instead an additional packet rate attribute is defined. The transport independent bit-rate value together with the maximum packet rate can then be used to calculate the real bit-rate over the transport actually used. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-mmusic-sdp-bwparam-03.txt To remove yourself from the IETF Announcement list, send a message to ietf-announce-request with the word unsubscribe in the body of the message. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-mmusic-sdp-bwparam-03.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-mmusic-sdp-bwparam-03.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2003-5-29072751.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-mmusic-sdp-bwparam-03.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-mmusic-sdp-bwparam-03.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2003-5-29072751.I-D@ietf.org> --OtherAccess-- --NextPart-- _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 29 09:03:03 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA01878 for ; Thu, 29 May 2003 09:03:03 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4TD2a919560 for mmusic-archive@odin.ietf.org; Thu, 29 May 2003 09:02:36 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4TD2aB19557 for ; Thu, 29 May 2003 09:02:36 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA01856 for ; Thu, 29 May 2003 09:02:33 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19LN1b-0006tk-00 for mmusic-web-archive@ietf.org; Thu, 29 May 2003 09:00:55 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19LN1a-0006th-00 for mmusic-web-archive@ietf.org; Thu, 29 May 2003 09:00:54 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4TD2XB19549; Thu, 29 May 2003 09:02:33 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4TD1tB19522 for ; Thu, 29 May 2003 09:01:55 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA01847 for ; Thu, 29 May 2003 09:01:51 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19LN0w-0006te-00 for mmusic@ietf.org; Thu, 29 May 2003 09:00:14 -0400 Received: from dial162.east.isi.edu ([65.114.169.162] helo=purple.nge.isi.edu) by ietf-mx with esmtp (Exim 4.12) id 19LN0u-0006ta-00 for mmusic@ietf.org; Thu, 29 May 2003 09:00:12 -0400 Received: from purple.nge.isi.edu (localhost [127.0.0.1]) by purple.nge.isi.edu (8.12.9/8.12.9) with ESMTP id h4TD1W6L035881; Thu, 29 May 2003 09:01:32 -0400 (EDT) (envelope-from csp@purple.nge.isi.edu) To: mmusic@ietf.org cc: jo@tzi.uni-bremen.de From: Colin Perkins Date: Thu, 29 May 2003 09:01:32 -0400 Message-ID: <35880.1054213292@purple.nge.isi.edu> Subject: [MMUSIC] WG last call: draft-ietf-mmusic-sdp-bwparam-03.txt Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , This is to announce a working group last call on the Transport Independent Bandwidth Modifier for SDP . Please send any final comments on this draft to the mailing list by Friday, 13th June 2003. If no substantive issues are raised by that time, we propose to ask the IESG to publish this as a Proposed Standard RFC. -- Colin Perkins http://csperkins.org/ _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 29 20:47:01 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA00452 for ; Thu, 29 May 2003 20:47:01 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4U0kYb05494 for mmusic-archive@odin.ietf.org; Thu, 29 May 2003 20:46:34 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4U0kYB05491 for ; Thu, 29 May 2003 20:46:34 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA00443 for ; Thu, 29 May 2003 20:46:31 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19LY0q-000565-00 for mmusic-web-archive@ietf.org; Thu, 29 May 2003 20:44:52 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19LY0p-000562-00 for mmusic-web-archive@ietf.org; Thu, 29 May 2003 20:44:51 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4U0kTB05474; Thu, 29 May 2003 20:46:29 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4U0j0B05392 for ; Thu, 29 May 2003 20:45:00 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA00410 for ; Thu, 29 May 2003 20:44:57 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19LXzK-00055H-00 for mmusic@ietf.org; Thu, 29 May 2003 20:43:18 -0400 Received: from dial162.east.isi.edu ([65.114.169.162] helo=purple.nge.isi.edu) by ietf-mx with esmtp (Exim 4.12) id 19LXzJ-00055C-00 for mmusic@ietf.org; Thu, 29 May 2003 20:43:17 -0400 Received: from purple.nge.isi.edu (localhost [127.0.0.1]) by purple.nge.isi.edu (8.12.9/8.12.9) with ESMTP id h4U0ii6L047060; Thu, 29 May 2003 20:44:46 -0400 (EDT) (envelope-from csp@purple.nge.isi.edu) To: "Even, Roni" cc: Orit Levin , "'Cullen Jennings'" , MMusic , Sean Olson , rony.even@polycom.co.il, Alan Johnston Subject: Re: [MMUSIC] RE: Question about draft-levin-mmusic-xml-media-cont rol In-Reply-To: Your message of "Thu, 22 May 2003 15:01:14 +0300." From: Colin Perkins Date: Thu, 29 May 2003 20:44:44 -0400 Message-ID: <47059.1054255484@purple.nge.isi.edu> Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , --> "Even, Roni" writes: >Collin, >Thanks for the response. > >1. About freeze. This is true for H.261 and H.263. The idea of the freeze is >to tell the decoder to continue decoding but stop display until a freeze >release arrives. If the full picture arrives in one frame like in H.263 and >H.261 the MCU can monitor and start sending when he sees the freeze release. >In H.264 a full picture can span over more then one frame by doing slice >update, we decided to allow the fast update to span over more then one frame >as long as the full picture will arrive in less then 3 seconds (better >congestion behavior). In this case we want the receiver to start displaying >when the last part has arrived, so the MCU will not know when to start >sending and the receiver will not know when to start displaying. Okay, that's a little clearer now. The idea is to avoid the MCU having to understand the video? >2. As for the feedback draft, there was no consensus about having a fast >update request, the opinion was that this is an indication that will allow >the encoder to decide how to handle it. In the case of MCU video switch the >encoder does not have enough information to know what is the right behavior >since he is not aware that the reason was a video switch and not some other >reason. I'm not sure it should matter why there is an update request, but if there is a justification, it would seem appropriate to include the reason in the RTCP message somehow. Colin _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic From mailnull@www1.ietf.org Thu May 29 20:53:33 2003 Received: from www1.ietf.org (ietf.org [132.151.1.19] (may be forged)) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA00720 for ; Thu, 29 May 2003 20:53:33 -0400 (EDT) Received: (from mailnull@localhost) by www1.ietf.org (8.11.6/8.11.6) id h4U0r7p05779 for mmusic-archive@odin.ietf.org; Thu, 29 May 2003 20:53:07 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4U0r6B05776 for ; Thu, 29 May 2003 20:53:06 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id UAA00713 for ; Thu, 29 May 2003 20:53:03 -0400 (EDT) Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19LY7A-0005Av-00 for mmusic-web-archive@ietf.org; Thu, 29 May 2003 20:51:24 -0400 Received: from ietf.org ([132.151.1.19] helo=www1.ietf.org) by ietf-mx with esmtp (Exim 4.12) id 19LY7A-0005As-00 for mmusic-web-archive@ietf.org; Thu, 29 May 2003 20:51:24 -0400 Received: from www1.ietf.org (localhost.localdomain [127.0.0.1]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4U0r4B05764; Thu, 29 May 2003 20:53:04 -0400 Received: from ietf.org (odin.ietf.org [132.151.1.176]) by www1.ietf.org (8.11.6/8.11.6) with ESMTP id h4RHtOB06965 for ; Tue, 27 May 2003 13:55:24 -0400 Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA21712 for ; Tue, 27 May 2003 13:55:19 -0400 (EDT) From: musicnetwork@violino.dsi.unifi.it Received: from ietf-mx ([132.151.6.1]) by ietf-mx with esmtp (Exim 4.12) id 19Kidt-0006gQ-00 for mmusic@ietf.org; Tue, 27 May 2003 13:53:45 -0400 Received: from violino.dsi.unifi.it ([150.217.15.208]) by ietf-mx with esmtp (Exim 4.12) id 19Kids-0006gL-00 for mmusic@ietf.org; Tue, 27 May 2003 13:53:44 -0400 Received: (from musicnetwork@localhost) by violino.dsi.unifi.it (8.8.7/8.8.7) id TAA25008 for mmusic@ietf.org; Tue, 27 May 2003 19:39:47 +0200 Date: Tue, 27 May 2003 19:39:47 +0200 Message-Id: <200305271739.TAA25008@violino.dsi.unifi.it> X-Authentication-Warning: violino.dsi.unifi.it: Processed from queue /var/spool/bulkmail/musicnetwork/mqueue To: mmusic@ietf.org Subject: [MMUSIC] CFC: MUSICNETWORK Open Workshop Call, Leeds, UK, September 2003 Sender: mmusic-admin@ietf.org Errors-To: mmusic-admin@ietf.org X-BeenThere: mmusic@ietf.org X-Mailman-Version: 2.0.12 Precedence: bulk List-Unsubscribe: , List-Id: Multiparty Multimedia Session Control Working Group List-Post: List-Help: List-Subscribe: , As promised to most of you, we are trying to organise the Second Open workshop of MUSICNETWORK Thematic Network of the European Commission. A service to put together industrial and research communities. http://www.interactivemusicnetwork.org I hope that you can contribute with your valuable activity at the workshop. See in the Following the Call for Contributions. The workshop will be partially overlapped with the WEDELMUSIC conference mainly focussed on research aspects and multimedia, DRM technologies http://www.wedelmusic.org/wedelmusic2003/index.html Specific workshops are going to be organised as additional events. Send an email back with a REMOVE in the subject to musicnetwork@dsi.unifi.it if you prefer to not receivie thie emails in the future. cheers, Paolo Nesi (MUSICNETWORK, Thematic Network of the European Commission) .-.-.-.-.-.-.ò-ò-ò-ò-ò-ò-.-.-.-.-.-ò-ò-ò-ò-ò-.-.-.-.-.-ò-ò-ò-ò-ò- CALL for CONTRIBUTIONS Second MUSICNETWORK Open Workshop University of Leeds, Leeds, UK 17-18 September, 2003, Open to all http://www.interactivemusicnetwork.org Solutions for Music Distribution and Fruition: Two days dedicated to the emerging applications for Music: on the www, multimedia integration and mobile. Tutorials, Products, Best practices, Case Studies and Innovative Applications. The main theme of the Second MUSICNETWORK workshop is dedicated to the state of the art and the identification of the future trends in music. on the WWW, multimedia integration and mobile. The Open Workshop is free, no registration fee is requested to attend the sections of the Workshop. A preliminary registration will be requested to have an estimation of the number of registered people. The workshop is economically supported by the European Commission with the MUSICNETWORK project. The MUSICNETWORK will give space to industries, experts, professionals and research institutions that are working in this sector to present their work in an open environment in which the innovation will be promoted with benefits for all the community. To this end, a set of calls have been opened as described in the following. Deadline for the submission is the 1st of July 2003 according to the following descriptions. *+****+Call for Tutorial*+****+ Tutorial proposals have to be presented as 2-3 pages description including: description of the tutorial, list of the tools mentioned, name and biography of the person giving the tutorial, history of the tutorial if it has been already given other times. The tutorial should be focussed on more than one product and should give a general view of the problems of the topic. The tutorials have to be of 45 minutes and should to be focussed on the following topics: -- production of courseware and content for music education -- production of music scores for publishing -- music distribution and protection -- Standardization: MPEG, SMIL, SVG, XHTML, XML... --…. *+****+Call for Products & Best Practices*+****+ Product presentations have to be proposed as 1-2 pages description as a flyer with possibly a demo to be uploaded on the MUSICNETWORK www site. In addition, it is requested to know: name and biography of the person giving the presentation, material distributed during the workshop, number of customers using the products and a description of its diffusion. The presentation has to be focussed on a general view of the product, architecture, format, most important features, future developments and evolutions, integration and interoperability aspects, etc. The selected Products will be entitled to use the seal "Assessed by MUSICNETWORK". The selected products will have 30 minutes of presentation and should be focussed on the following topics: -- Music educational tools -- Music sheet production tools -- Integration of Music and Multimedia tools -- Digital asset management for music and multimedia archives tools -- Music, Multimedia and Content Protection and distribution tools -- Music tools for impaired people --…. *+****+Call for Case study, Problems*+****+ The case studies have to be proposed with a simple description of the problem. They may be or not accompanied by some examples (or tools that are close to cope with them), and/or by the sketch of an ideal solution. The accepted case studies will be discussed in the Open Workshop and on the WWW site. Each accepted case study will have 10 minutes to explain the problem at the workshop to start the discussion for other 15-20 minutes. Specific experts will be invited by the MUSICNETWORK to cope with the problem explained. The presenter of the problem can even decide to remain anonymous. In that case, one of our experts will explain the problem in front of the audience. Preferred topics are: -- Music notation formats -- Multimedia and music notation -- Music recognition -- … *+****+Call for innovative Applications with demo*+****+ Innovative applications are typically in a middle status from research work and real products. They have been probably proposed in the past as research works while they have not been supported enough to become real products. They have to be proposed as 2-3 pages description as a flyer with possibly a demo to be uploaded on the MUSICNETWORK www site. The selected Applications will be entitled to use the seal "Assessed by MUSICNETWORK". In addition, it is requested to know: name and biography of the person giving the presentation, material distributed during the workshop. Preferred topics are: -- Music notation usage -- Multimedia and music notation -- Music recognition -- … The proposals will be assessed, voted and selected by MUSICNETWORK experts and participants. Among the selected, the best 2-3 proposals for Tutorial, Case Study Problems and innovative Applications categories will be economically supported to attend the workshop and give their presentation, while we will give space to present the results to a very large number of proposals in each category. A large visibility will be given to all proposals on the WWW site. All the proposals will be posted on the WWW site, if this is not acceptable for you please mention in the proposal and email. The documents submitted will be collected and used for creating the Proceedings distributed during the conference and via the WWW site. The selected Products and Applications will be entitled to use the seal "Assessed by MUSICNETWORK". The results of the assessment and the follow up of your presentation at the workshop will be presented on the WWW site. Submissions have to be sent via email to mailto:musicnetwork@dsi.unifi.it within the 1st of July, 2003. The acceptance and the evaluation will be communicated within the 15th of July, 2003. -.-.-.-.-ò-ò-ò-ò-ò-.-.-.-.-ò-ò-ò-ò--ò-.-.-.-.-ò-ò-ò-ò-ò-.-.-.-ò-ò--ò-ò- _______________________________________________ mmusic mailing list mmusic@ietf.org https://www1.ietf.org/mailman/listinfo/mmusic