Re: [splices] Using Two Separate Devices to Start a Conversation proposal
Peter Musgrave <musgravepj@gmail.com> Tue, 07 June 2011 10:18 UTC
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From: Peter Musgrave <musgravepj@gmail.com>
Date: Tue, 07 Jun 2011 06:19:10 -0400
To: "Shekh-Yusef, Rifaat (Rifaat)" <rifatyu@avaya.com>
Cc: "splices@ietf.org" <splices@ietf.org>
Subject: Re: [splices] Using Two Separate Devices to Start a Conversation proposal
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I agree this can be dropped. Peter Sent from my iPad On 2011-06-06, at 10:02 PM, "Shekh-Yusef, Rifaat (Rifaat)" <rifatyu@avaya.com> wrote: > Hi All, > > Very interesting discussion. > > What I had in mind is what Peter described below, but you guys came up with very interesting new ideas that can be used to address this scenario. > The scenario is technically an interesting and challenging one, but I tend to agree with Paul that it is not really a use case that will likely be used and maybe we should spend our time addressing other more likely to be used uses case. > > Regards, > Rifaat > > > > ________________________________________ > From: splices-bounces@ietf.org [splices-bounces@ietf.org] On Behalf Of Paul Kyzivat [pkyzivat@cisco.com] > Sent: Monday, June 06, 2011 7:45 PM > To: splices@ietf.org > Subject: Re: [splices] Using Two Separate Devices to Start a Conversation proposal > > I suspect asymmetric rtp *won't* work a lot of the time, for many > reasons, whether we think they are reasonable or not. > > Maybe this is just an unreasonable use case. I can't really imagine > wanting to do this. If I have a handset, or headset, with a mic, it > probably has a "speaker" too, and it would seem weird using the mic and > not its speaker too. And when they are separate there is likely to be > problems with echos. > > Thanks, > Paul > > On 6/6/2011 7:27 PM, Peter Musgrave wrote: >> Hi all, >> >> My assumptions were that: >> - Alice's desk phone is doing the media aggregation and creating a >> reINVITE for Bob with a=sendrecv and asymmetric media: >> * media is sent from Bob to Alice desk phone >> * media is sent from Alice Computer to Bob >> >> As far as Bob knows this is a dialog only with Alice's deskphone. Bob >> does not have to support SPLICES or do anything special. >> >> Bob must handle asymmetric RTP from Alice. >> >> Ok? >> >> I agree that requiring media relay does become a bad idea when the >> relaying element is e.g a cellphone. >> >> Do we think that having asymmetric RTP will be ok? A lot of >> implementation have worked toward symmetric RTP (and some will only play >> RTP arriving from the place they are sending to! [1 implementation at >> SIPIT28, 3 at SIPIT27 - so maybe not worth worrying about]). Are there >> any issues with ZRTP or use of ICE? [I am not an ICE expert so I can't >> recall if symmetric RTP was baked into ICE, umm "frozen in" to ICE maybe?] >> >> Regards, >> >> Peter >> >> >> >> >> >> On Mon, Jun 6, 2011 at 5:45 PM, Alan Johnston <alan.b.johnston@gmail.com >> <mailto:alan.b.johnston@gmail.com>> wrote: >> >> But isn't the INVITE Join received at Alice's Desk Phone? If so, then >> a normal Join will result in Alice's Desk Phone performing mixing of >> audio streams from Alice's PC, Alice's Desk Phone, and Bob. I thought >> what was desired (and shown by Rifaat's flow) was that Alice's Desk >> phone did not mix the media, but instead inserted/spliced the media >> from Alice's PC into the dialog with Bob, resulting in a re-INVITE to >> Bob with two m= lines. >> >> - Alan - >> >> On Mon, Jun 6, 2011 at 4:15 PM, Worley, Dale R (Dale) >> <dworley@avaya.com <mailto:dworley@avaya.com>> wrote: >>> No, surely it is an ordinary join. At the far UA, there are two >> incoming dialogs, each with one audio m= line. The only oddity is >> that one dialog is recvonly (at the far UA), and so is never sent >> media. The other dialog is sendonly (at the far UA) and so never >> provides audio to the mixing, but is only sent the result of the >> mixing. The effect is that the far UA's input audio is sent only to >> the second dialog, and the far UA's output audio is driven only by >> the first dialog. >>> >>> Dale >>> >> _______________________________________________ >> splices mailing list >> splices@ietf.org <mailto:splices@ietf.org> >> https://www.ietf.org/mailman/listinfo/splices >> >> >> >> >> _______________________________________________ >> splices mailing list >> splices@ietf.org >> https://www.ietf.org/mailman/listinfo/splices > _______________________________________________ > splices mailing list > splices@ietf.org > https://www.ietf.org/mailman/listinfo/splices > _______________________________________________ > splices mailing list > splices@ietf.org > https://www.ietf.org/mailman/listinfo/splices
- [splices] Using Two Separate Devices to Start a C… Shekh-Yusef, Rifaat (Rifaat)
- Re: [splices] Using Two Separate Devices to Start… Peter Musgrave
- Re: [splices] Using Two Separate Devices to Start… Worley, Dale R (Dale)
- Re: [splices] Using Two Separate Devices to Start… Worley, Dale R (Dale)
- Re: [splices] Using Two Separate Devices to Start… Alan Johnston
- Re: [splices] Using Two Separate Devices to Start… Paul Kyzivat
- Re: [splices] Using Two Separate Devices to Start… Paul Kyzivat
- Re: [splices] Using Two Separate Devices to Start… Worley, Dale R (Dale)
- Re: [splices] Using Two Separate Devices to Start… Worley, Dale R (Dale)
- Re: [splices] Using Two Separate Devices to Start… Alan Johnston
- Re: [splices] Using Two Separate Devices to Start… Worley, Dale R (Dale)
- Re: [splices] Using Two Separate Devices to Start… Alan Johnston
- Re: [splices] Using Two Separate Devices to Start… Paul Kyzivat
- Re: [splices] Using Two Separate Devices to Start… Peter Musgrave
- Re: [splices] Using Two Separate Devices to Start… Paul Kyzivat
- Re: [splices] Using Two Separate Devices to Start… Shekh-Yusef, Rifaat (Rifaat)
- Re: [splices] Using Two Separate Devices to Start… Peter Musgrave
- Re: [splices] Using Two Separate Devices to Start… Gonzalo Camarillo
- Re: [splices] Using Two Separate Devices to Start… Paul Kyzivat
- Re: [splices] Using Two Separate Devices to Start… Gonzalo Camarillo
- Re: [splices] Using Two Separate Devices to Start… Worley, Dale R (Dale)
- Re: [splices] Using Two Separate Devices to Start… Paul Kyzivat
- Re: [splices] Using Two Separate Devices to Start… Worley, Dale R (Dale)