Re: [maitai] Roles of Sender and Receiver

I dont think we have, and if we go that way, that implies to me that BFCP should have also gone the same way - which it did not.

Keith 

> -----Original Message-----
> From: maitai-bounces@ietf.org 
> [mailto:maitai-bounces@ietf.org] On Behalf Of Mike Hammer (hmmr)
> Sent: Tuesday, December 07, 2010 3:01 PM
> To: Peter Musgrave; bruno.chatras@orange-ftgroup.com
> Cc: maitai@ietf.org
> Subject: Re: [maitai] Roles of Sender and Receiver
> 
> Better to use a new attribute than overload an existing attribute.
> 
> But, this also assumes we are using SDP and SIP to provide 
> dynamic controls during call.
> Have we crossed that bridge yet?
> 
> Mike
> 
> 
> -----Original Message-----
> From: maitai-bounces@ietf.org 
> [mailto:maitai-bounces@ietf.org] On Behalf Of Peter Musgrave
> Sent: Tuesday, December 07, 2010 6:07 AM
> To: bruno.chatras@orange-ftgroup.com
> Cc: maitai@ietf.org
> Subject: Re: [maitai] Roles of Sender and Receiver
> 
> I think this causes confusion with hold/resume. I can have a 
> camera and display but choose not to receive your video 
> temporarily as I e.g. use the display to look at something else. 
> 
> Hence I don't see it a suitable for describing the static 
> endpoint physical configuration. 
> 
> In principle a new SDP attribute could be used (e.g. 
> a=device:camera) but this will cause all kinds of backwards 
> compatibility issues with calls to devices which do not 
> understand this. I suspect some use of the SDP grouping 
> framework might come into play here...
> 
> Peter
> 
> 
> On 2010-12-07, at 3:49 AM, <bruno.chatras@orange-ftgroup.com> wrote:
> 
> >> 
> >> In fact in the first exchange we also need to provide some 
> >> information about media asymmetry (e.g. I may have three 
> screens, but 
> >> 4 cameras or three screens and two cameras). so my video m 
> lines do 
> >> not necessarily imply anything my ability to send that many 
> >> videos....
> >> 
> > 
> > Why can't we use one m= line per unidirectional stream and use 
> > a=sendonly/a=recvonly to discrimate between screens and cameras?
> 
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