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: You wouldn't go *personally*, just send some nanobots by starwisp or something.
gollark: If you pick, say, a random moon far from any stargates or civilized space, who can be said to "own" it?
gollark: Though distance would be problematic again.
gollark: Just convert an entire moon or asteroid belt in some far away place nobody likes much into... ships, or something.
gollark: Actually, if self-replicators are cheap and relatively fast, why limit it to computing?

See also

References


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