Presence service

From Wikipedia, the free encyclopedia
Jump to: navigation, search

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[edit]

Presence server[edit]

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.

See also[edit]

References[edit]

  • Day, M., J. Rosenberg, and H. Sugano. "A Model for Presence and Instant Messaging." RFC 2778. February 2000.
  • TS 23.141