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From: [email protected] 
[[email protected]] On Behalf Of Douglas Hubler 
[[email protected]]

I'm trying to figure out why they are separate projects and services.

If anyone has documentation on either of these systems, please let me
know.  I know sipXrls handles BLF but that's about it.
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They're separate because sipXrls can function without sipXpresence.  sipXrls 
aggregates busy/not-busy information from phones into "resource list" events 
for subscribers.  IIRC, sipXpresence subscribes to one of these lists to get 
the on-phone/off-phone status that is needed to construct the proper IM status 
information for the users.  The advantage of this architecture is that the only 
subscriptions the phone gets are from sipXrls, and many phones can handle only 
a limited number of subscriptions.

Dale
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