A switching system in which telecommunications features are improved by the proximity status of a predetermined user to a communications terminal. Proximity status information deduces a predetermined user's presence or absence to answer incoming calls on a communications terminal associated with the...http://www.google.fr/patents/US6594354?utm_source=gb-gplus-shareBrevet US6594354 - Method and apparatus for alert control on a communications system
Method and apparatus for alert control on a communications system
