Presence service

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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 serice. Also presence service may be implemented as direct communication among presentity and watchers, i.e. server is not required.

[edit] References

  • Day, M., J. Rosenberg, and H. Sugano. "A Model for Presence and Instant Messaging." RFC 2778. February 2000.
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