A method for managing and routing calls in a telephone system involves receiving an incoming call identified by a specific ANI; providing an option to input a routing key associated with one of multiple function endpoint stations; if the routing key is provided, accessing storage associating individual unique keys with both ANI information and one function endpoint station, locating the routing key, verifying a stored ANI associated with the routing key against the ANI, and if the ANI verifies, automatically routing the call to the associated function endpoint station; and if the routing key is not provided, following interaction with the IVR to connect to one function endpoint station, and upon connection, generating a unique key, storing the unique key along with the specific ANI information and an identifier of the function endpoint station, and making the unique key available for subsequent provision as the routing key.