Patent ID: 7580515
Filing Date: 2009-08-25
Classification: H04M,H04Q

Abstract:
1. A method for implementing a call control service when processing a call in a telecommunications system, the call being from a calling party at a calling communication station having a calling party directory number, the call intended for a called party at a called communication station at a called party directory number, the method comprising: receiving a termination attempt query at a controller from a switch associated with the called communication station; determining, at the controller, if a redirecting element field is set to a specified directory number of network equipment designated to process calls for the call control service; sending a forward call response message to the terminating switch if the redirecting element field is set to the specified directory number; receiving a new terminating attempt query from the terminating switch to the controller, the new terminating attempt query produced by the terminating switch in response to receiving a new call at the terminating switch, determining, at the controller, if the redirecting element field is set to the specified directory number; and sending an authorize termination message from the controller to the terminating switch for processing of the call to the called communication station if the redirecting element field is set to the specified directory number.