Patent ID: 6850762

Claim:
A procedure for setting up a telecommunication connection between a calling subscriber and a called subscriber in a telecommunication network that includes terminal equipment of the calling subscriber, terminal equipment of the called subscriber, a home location register of the calling subscriber, a home location register of the called subscriber, a visited mobile switching center serving the calling subscriber, a communication server operative for route optimization of the telecommunication connection to be set up, and a mobile switching center, comprising the steps of: setting up a call pricing data base containing call pricing data which accounts for costs of calls that are set up and routed in an area of a mobile switching center of another telecommunication network; transmitting a call set-up request from the terminal equipment of the calling subscriber to the visited mobile switching center; determining a current location in the telecommunication network of the calling subscriber terminal equipment from which the call set-up request has been transmitted; determining in the communication server a location in the telecommunication network of the terminal equipment of the called subscriber; determining in the communication server an optimized route for the telecommunication connection to be set up from the prices of a multiplicity of alternative routes using call pricing data in the call pricing data base and the location of the terminal equipment of the called and calling subscribers; returning from the communication server to the visited mobile switching center information identifying the determined optimized route; and setting up the telecommunication connection from the visited mobile switching center to the mobile switching center utilizing the returned optimized route.