A method and apparatus are provided for analyzing a user's communication activity to determine presence patterns at one or more communication devices. A user's presence at one or more communication devices is monitored over time to detect at least one pattern of behavior indicating that a user is likely...http://www.google.de/patents/US7196630?utm_source=gb-gplus-sharePatent US7196630 - Method and apparatus for routing a communication to a user based on a predicted presence
