Abstract: A system and method for differentiating and routing local calls in interconnected networks of a predominate local exchange carrier (LEC) having an advanced intelligent network (AIN), and a competing local exchange carrier (CLEC) having CLEC subscriber stations connected to switching systems in the LEC network. An originating trigger is set in the switching systems of the LEC network for CLEC subscriber stations. Activation of the trigger causes a message to the control point of the AIN and a determination of whether or not the call is local, the CLEC to which the station subscribes, and the routing directions for that CLEC. A response message from the control point to the switching system causes the switching system to route the call in accord with the instructions contained therein. The system routes non-local calls based on primary interexchange carrier (PIC) functionality in the switching systems. The determinations made by the control point require the accessing of databases.