Patent ID: RE43065

Claim:
A procedure for route optimization of a telecommunication connection to be set up between a calling subscriber and a called subscriber in a telecommunication system that includes a mobile switching center, a service control point, a service switching point connected to the service control point, a subscriber register, and a gateway connected to the service control point and to the subscriber register, comprising the steps of: directing the telecommunication connection to be set up to the service control point via the service switching point; performing a database query directed from the service control point and addressed to the subscriber register; and determining an optimal route to the mobile switching center currently serving the called subscriber based on a response from the subscriber register to the database query; wherein said performing step comprises: directing the database query from the service control point to the subscriber register via the gateway; converting, in the gateway, the database query from the service control point into a signaling query; sending the converted signaling query from the gateway to the subscriber register; defining, at the subscriber register, a signaling query response to the converted signaling query; sending the signaling query response from the subscriber register to the gateway; converting, in the gateway, the signaling query response to a responsive database query; and returning the responsive database query from the gateway to the service control point.