Presence service

Presence service is a network service which accepts, stores and distributes presence information.

Presence service may be implemented as a single server or have an internal structure involving multiple servers and proxies. There may be complex patterns of redirection and proxying while retaining logical connectivity to a single presence service. Also presence service may be implemented as direct communication among presentity and watchers, i.e. server is not required.

Functional entities to support presence service

Presence server

The Presence Server, that reside in the presentity's home network, is able to receive and manage presence information. It is a SIP Application Server and is located using SIP URLs.

gollark: Depends on the database you're using and what the driver code does. In general no.
gollark: ... what?
gollark: It's probably fine if it isn't running anything hugely important and provides funlolz™.
gollark: Don't most databases do that via indices?
gollark: Okay then.

See also

References


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