Hi,
I have a question about presence service.

watchers ------>Subscribe----> Presence Server <----------------Publish from 
endpoint.

Watchers would subscribe for endpoints state with presence server, the server 
would send notify whenever there is a change in endpoint state.
The endpoints would send publish to presence server whenever there is a change 
in state.

My question is how would endpoints know when to send Publish to presence server 
and what exactly would the publish convey. This is probably a very basic 
question, would be of great help if somebody could clarify this.

Regards
Varun




      
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