Patent ID: 7920692

Claim:
A system for providing enhanced call management services to users receiving incoming calls on extensions on a private branch exchange (PBX), comprising: an application server configured to provide call management services to at least one of the users; and a protocol proxy in selective communication with the PBX and the application server and configured to receive call information from, and provide instructions to, the PBX according to a protocol for establishing call sessions and send the call information to the application server, the protocol proxy configured to manage an incoming call to the at least one user according to a model selected from at least one of the following: (1) a third party call control model, wherein the protocol proxy remains in control of the incoming call for the duration of the call; (2) a call forwarding override model, wherein the protocol proxy removes itself from the incoming call once an action has been taken for redirecting the call; and (3) a simultaneous ring model, wherein the PBX sends information relating to the incoming call to the protocol proxy and at the same time attempts to connect the incoming call to an extension on the PBX; and wherein the application server is further configured to receive the call information from, and provide instructions to, the protocol proxy.