DISTRIBUTED TECHNIQUE FOR ALLOCATING CALLS

摘要

A method for minimizing toll call costs for completing a call at an originating PBX within a network of connected PBXs to a remote destination, comprising the steps of generating within the originating PBX and communicating to each other PBX within the network a message calling for bids from each PBX for least cost routing of the call according to respective local routing plans, determining within the originating PBX a least cost direct route for completing the call, determining from the respective local routing plans the least cost routing for each other PBX and communicating the bids to the originating PBX, and comparing and in response selecting within the originating PBX a least costly one of the least cost direct routes and the least cost routing for each other PBX for completing the call to the remote destination.