Patent 7835512 was granted and assigned to Avaya (company) on November, 2010 by the United States Patent and Trademark Office.
There is disclosed a method of routing a call in a communication system, comprising: defining a set of availability modes for at least one user, each mode including at least one identifier identifying at least one originating telephone number; defining a routing rule for each of said modes; and routing a call for the at least one user in dependence upon the routing rule associated with an active availability mode of the user and the originating telephone number of the call.