Abstract: Disclosed is a system for allocating international transit calls among a plurality of carriers in a terminating country in accordance with routing information that has been previously specified by the originating carrier. Originating carriers may select one of a plurality of routing treatment options which specify how international transit calls should be allocated among the plurality of carriers serving a given terminating country. Carrier treatment tables maintain the routing information specified by each originating carrier for each terminating country. Upon receipt of an international transit call, an originating gateway switch can access the appropriate carrier treatment table and retrieve the routing information specified by the originating carrier for the indicated terminating country. In this manner, a terminating carrier can be selected to receive the transit call based on the routing information previously specified by the originating carrier.