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

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
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