> -----Original Message-----
> From: Dean Willis [mailto:[EMAIL PROTECTED] 
> Sent: Wednesday, October 17, 2007 1:38 PM
> To: Stucker, Brian (RICH1:AR00)
> Cc: DRAGE, Keith (Keith); IETF SIP List; Audet, Francois 
> (SC100:3055); Christer Holmberg
> Subject: Re: What are we arguing about when we say INFO? (was 
> Re: [Sip] INFO)
> 
> 
> On Oct 17, 2007, at 12:50 PM, Brian Stucker wrote:
> 
> >>
> >> Let's say we have something (not DTMF) that needs to transport jpg 
> >> images that are used as soft-key overlays. To do what you're 
> >> suggesting, we'd need a new MIME-type registration that 
> says "This is 
> >> just like jpeg, except that it is only useful for keypad overlays".
> >> The MIME folks would birth kittens.
> >
> > I think you may have misunderstood my example here. I'm postulating 
> > that you don't change the MIME type (jpeg) you change the 
> supported/ 
> > required header value.
> 
> 
> I think that conflicts with the way Supported and Require 
> work. They both purely say "Can support these options at any 
> time", not "I expect you to use this particular option's 
> handling for this particular message"
> 
> Let's say you support jpeg for image-mapped touch screen and 
> jpeg for storing in my pone book and displaying with caller 
> ID. You'd indicate support for both in "Supported" and would 
> not reject a request with Require for both.
> 
> I send you a jpeg. How do I tell you whether to put it on 
> your screen as an image map or store it in your phone book?
> 

You're right. I see the difference now.

Thanks,
Brian


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