RE: [MMUSIC] I-D ACTION:draft-ietf-mmusic-sdp-media-content-04.txt

Very well.
That is clear then.
We shall focus on the separate SDP attribute.

Arnoud

Arnoud A. T. van Wijk
AnnieS New Technology
www.AnnieS.nl
Mobile textphone (SIP): arnoud@annies.nl

> -----Original Message-----
> From: Gonzalo Camarillo [mailto:Gonzalo.Camarillo@ericsson.com]
> Sent: vrijdag 25 augustus 2006 10:02
> To: Arnoud van Wijk
> Cc: 'Colin Perkins'; 'Gunnar Hellström'; 'Cullen Jennings'; 'MMusic'
> Subject: Re: [MMUSIC] I-D ACTION:draft-ietf-mmusic-sdp-media-content-
> 04.txt
> 
> Hi,
> 
> my take on this would be to remove the 'user-floor' and the 'txt' tokens
> from this draft and add a clearer explanation of what the content tokens
> (current and future) should describe.
> 
> Content tokens should consist of a meta description of the contents of a
> media stream. That is, whether the stream contains slides, or is the
> main stream, etc. Content tokens should not describe things like what to
> do in order to handle a stream (e.g., use user-level floor control).
> That type of stuff would be better described in a separate SDP
> attribute, as suggested by Colin at some point.
> 
> That separate SDP attribute would resolve the use cases Arnoud and
> Gunnar have in mind, which are very interesting as well.
> 
> Thanks,
> 
> Gonzalo
> 
> 
> Arnoud van Wijk wrote:
> > Hi Colin,
> > I agree with Gunnar and disagree with you.
> > The txp content label is no different the the other content labels IMHO.
> > And again, it is NOT about a PSTN textphone, but about turntaking be
> used in
> > the call since it media stream contains real-time text to be used in
> turn
> > taking method.
> > It is not about a special phone, or limited device that is elsewise
> unable
> > to be connected.
> > But I am still waiting on Gonzalo's view on this.
> >
> > Greetz
> >
> > Arnoud
> >
> > Arnoud A. T. van Wijk
> > AnnieS New Technology
> > www.AnnieS.nl
> > Mobile textphone (SIP): arnoud@annies.nl
> >
> >> -----Original Message-----
> >> From: Colin Perkins [mailto:csp@csperkins.org]
> >> Sent: woensdag 23 augustus 2006 10:15
> >> To: Gunnar Hellström
> >> Cc: Cullen Jennings; MMusic; Gonzalo. Camarillo@ericsson. com
> >> Subject: Re: [MMUSIC] I-D ACTION:draft-ietf-mmusic-sdp-media-content-
> >> 04.txt
> >>
> >> Gunnar,
> >>
> >> On 23 Aug 2006, at 08:28, Gunnar Hellström wrote:
> >>> It is allowed to have more than one content attribute.
> >> True, but irrelevant.
> >>
> >>> There is no difference in characteristics of the txp attribute
> >>> compared to the other accepted attributes.
> >>> slides come from a slide showing application that has a specific
> >>> expected behaviour of showing one slide at a time.
> >>> Speaker has its source in a camera, a keyboard and a microphone
> >>> that likely requires some polite method to be allowed to control.
> >>> All have sources in devices and have a mixed meaning of device
> >>> indications and preparation for human behaviour when using the
> >>> contents.
> >>> There is no reason to separate out txp in this collection of
> >>> attributes.
> >> I disagree, for the reasons I have previously explained.
> >>
> >>> With the new slimmed description it is of the same size and level
> >>> as the others.
> >> The "size and level" of the description was never the problem.
> >> Instead, there is concern that its semantics don't fit with the
> >> content label.
> >>
> >>> As I remember it, the last call just asked for an improved
> >>> description, not questioning the idea to include the attribute.
> >> I am explicitly questioning the inclusion of the txp label in the
> >> media content draft. I believe it should be removed to a separate
> >> draft, defining a new SDP attribute. We should also consider if the
> >> user-floor label should be removed too.
> >>
> >> A simple rewording of the description of the txp label, of the type
> >> you are proposing, without considering the semantics, will not
> >> resolve this issue.
> >>
> >> Colin
> >> _______________________________________________
> >> mmusic mailing list
> >> mmusic@ietf.org
> >> https://www1.ietf.org/mailman/listinfo/mmusic
> >
> >

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