Well, the photo can be on some web server:

Call-info: <http:someserver.example.com?mypicture.jpeg;purpose=icon>

> -----Original Message-----
> From: Hadriel Kaplan [mailto:[EMAIL PROTECTED] 
> Sent: Tuesday, October 30, 2007 20:26
> To: Audet, Francois (SC100:3055)
> Cc: sip List
> Subject: RE: [Sip] INFO: A recap, sense of consensus and a 
> proposal for direction.
> 
> 
> 
> > -----Original Message-----
> > From: Francois Audet [mailto:[EMAIL PROTECTED]
> >
> > > Or a package
> > > for sending vcard info to the caller/called.  Or a package for 
> > > giving out a jpeg for photo-id, or for call screen display.
> >
> > Isn't that what the Call-info header is exactly for (RFC 3261/20.9)?
> 
> It was my understanding the Call-Info header was to give a 
> URI to go fetch stuff from, usually an HTTP URI (if one could 
> use the term "usually" for the Call-Info header ;).  That is 
> highly unlikely I think, since it is highly unlikely a SIP UA 
> has a web-server to provide such, or one globally reachable 
> (like, good luck if it's behind a NAT/FW).  I guess you could 
> put in a SIP URI and tell it to Subscribe for a jpeg photo-id 
> package, and stick some cookie in the uri so the serving UA 
> can correlate the subscribe request to the call (i.e., which 
> call is asking for this info?).  <sarcasm>Yeah that's a lot 
> more reasonable than just using the Invite dialog to send it 
> in an INFO.</sarcasm>
> 
> -hadriel
> 
> 


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