Patent ID: 9088646
Filing Date: 2015-07-21
Classification: H04M,H04Q

Abstract:
1. A call processing method comprising: routing a call to a terminating service switching point associated with a called communication station; receiving, at a service control point from the terminating service switching point, a termination attempt query message for the call from a calling party at a calling communication station, the call intended for a called party at the called communication station; determining, at the service control point, from the termination attempt query message whether standard caller identification information can be provided for the call and whether the called party associated with a called party directory number is a subscriber to a call control service; if the called party is the subscriber to the call control service, and if the standard caller identification information can be provided, determining whether predetermined data is present in the termination attempt query message; if the called party is the subscriber to the call control service, determining if a redirecting element field is set to a predetermine directory number of a service node designated to process calls for the call control service; wherein determining whether predetermined data is present comprises testing a value of the redirecting element of the termination attempt query message; wherein when the redirecting element is set to the predetermined directory number of the service node identified to play announcements to the called party, sending a forward call response message to the terminating service switching point; in response to the forward call response message, the terminating service switching point routing the call to the service node designated to process calls for the call control service; the service node originating a new call to the predetermined directory number, including formatting a setup message with the redirect element filed set to the predetermined directory number; receiving the new call at the terminating service switching point, transmitting a new terminating attempt query to the terminating service switching point; determining by the terminating service switching point if the redirect element field is set to the predetermined directory number; if so, sending an authorize termination message from the terminating service control point to the terminating service switching point for processing the call to the called party and announcing the call; wherein announcing the call includes: playing a message prompting the called party at the called communication station to select a call disposition option by entering a single key press; at the service node, detecting signaling information due to the single key press, comprises detecting dual tone multi-frequency signals at the service node; and at the service node, adding a calling directory number to a blocking list at a service control point via a communication link when the signaling information corresponds to a call blocking option; wherein when the redirecting element is not set to the predetermined directory number of the service node, the service node: receiving call information in response to a called directory number of the called communication station prior to originating the new call; leaving the call in a ringing state to the calling communication station prior to originating the new call; originating the new call to a directory number associated with the called communication station, the originating the new call including the service node generating a call setup message having a calling party identifier set to the calling directory number and the redirecting element set to the predetermined directory number of the service node.