As per my understanding of presence data model,
Presence state = person information + his services + his devices.
Furthermore, person information like activities have to me one and the
"person" can have multiple services or devices thus multiple tuple in
a single PIDF.

Does it really makes sense to have multiple "person" as output of
Presence Engine (Compositor)?
If XMPP supports multiple "person", does presence data model has a
deficiency modeling this behavior?

~Vikram



On 6/15/07, Vikram Chhibber <[EMAIL PROTECTED]> wrote:
> The way this is achieved in SIP is to simulate multiple PUBLISH being
> sent by different devices for the same user to the Presence Engine.
> This is perfectly valid.
> The Presence Engine needs to be smart enough to do a composition and
> output the most reliable "person" information to the watchers. It may
> consolidate tuple from multiple PUBLISH into one PIDF, but the
> "person" needs to be one always one.
> Regarding your other issue about how to map "person" to tuple, I
> myself not sure.
>
> You may increase the contact q-value of the tuple for which the
> "person" got selected.
>
> On 6/14/07, Franz Fischer <[EMAIL PROTECTED]> wrote:
> > Hallo!
> >
> > I'm trying and trying and trying to transfer multiple presence states using 
> > PIDF and RPID but don't know to solve this problem.
> > I need it for mapping xmpp presence states (each user can have more than 
> > one state) to sip/simple.
> > I would like to transfer couples of data which consists of the following 
> > elements:
> >
> > - contact (a sip-uri)
> > - presence state (I guess <activities> is the only way for)
> > - a comment (<note>)
> >
> > but I see no way to do this. Has one of you an idea?
> > As far as I know the presence state must be in <person> and the other 
> > things in <tuple> an there is no way to get a logical assignment between 
> > this both.
> > Futhermore there is normally only one <person> component with one presence 
> > state.
> >
> > In the meantime I think there is no solution but mapping all presence 
> > states to a single one (-very ugly!-). Can you commit this or give me any 
> > advise?
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