Chapter 17

The Presence Service in the IMS

Gonzalo Camarillo M.Sc, 

Gonzalo Camarillo M.Sc

Advanced Signalling Research Laboratory, Ericsson, Helsinki, Finland

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Miguel A. García-Martín, 

Miguel A. García-Martín

Senior Expert

IP Multimedia technologies, Ericsson, Helsinki, Finland

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First published: 29 June 2004
https://doi.org/10.1002/047087158X.ch17

Summary

This chapter contains sections titled:

  • The Foundation of Services

  • Presence Architecture in the IMS

  • Watcher Subscription

  • Subscription to Watcher Information

  • Presence Publication

  • PresenceOptimizations

  • The Ut Interface

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