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Subject: Presence and IntComm WG

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Re: [wg-pic] PA vs. P2P


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  • From: Steve Blair <>
  • To:
  • Subject: Re: [wg-pic] PA vs. P2P
  • Date: Tue, 17 May 2005 16:07:03 -0400



Ben Teitelbaum wrote:

Steve Blair
<>
writes:


Candace,

This is a great list. I might add:

7. Off-line presence (i.e in the absence of any PUAs); for example, a
PA might report when a user was last seen;


Really? This would seem to pull PIC back into the social context
conversation. I would think the key is user settable presence. For
example if a users wants such off-line presence they could enable it
but it would be off by default. Am I missing the big picture on this
one?


When I've heard Henning talk about this, the model is still very much
that the user sets the policy and composition rules and uploads them
to a PA via XCAP. I'm not sure where the specification of policy
language stands in SIMPLE.
Note that RPID has "since" and "until" attributes, so some of the
off-line presence that a PA might furnish could have been explicitly
published by a user's presentity. For example, a local calendar app
on a user's laptop might publish "on plane until 18:20 UTC" just
before disconnecting. Authorized watchers should be able to retrieve
this presence from the user's PA while he/she is off-line on the
plane.


Very good example. That was what I was missing. Thanks.

-- ben





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