METHOD AND APPARATUS FOR LOCAL ROUTING OF TOLL FREE CALLS

摘要

A call is routed from a user location to a local call termination point by mapping a dialed toll free number to a POTS-routable number within a local rate calling area (LRCA) that includes the user location. Enhanced services (for example, protocol conversion, etc.) may take place at the local call termination point; and, subsequently, the call may be routed from the local call termination point to a remote call termination point by mapping the POTS-routable number to another number (e.g., a long distance number) associated with a long distance call termination point. The dialed toll free number is mapped to a POTS-routable number by determining an originating NPA-NXX for the user location, matching a routing NPA-NXX for the local call termination point associated therewith, and selecting a line number for the local call termination point according to routing NPA-NXX and the dialed toll free number. The routing NPA-NXX is selected from a first table and the line number is selected from a second table. These tables may be stored as part of an SMS/800 service management system database within a telephony network over which the scheme is deployed.