Patent ID: 6311055
Filing Date: 2001-10-30
Classification: H04M,H04W

Abstract:
A system for providing call barring services in a cellular telephony network, comprising:a memory unit that stores a plurality of subscriber records, each of said subscriber records being associated with a respective mobile subscriber by means of an international mobile subscriber identity and including a screening list of barred numbers for said mobile subscriber;comparison means for comparing a called party number, received from a mobile terminal associated with said mobile subscriber, with the respective screening list of barred numbers in the subscriber record associated with said mobile subscriber, whereby a call initiation request from said mobile terminal is barred when one of the barred numbers within said screening list corresponds to said called party numbers;a home location resister for storing information on whether said mobile subscriber subscribes to said call barring services; anda switching center for controlling call operations, wherein said switching center determines, upon said call initiation request, said mobile subscriber subscribes to said call barring services by means of said information stored in said home location resister and accesses said memory unit by means of transmitting said international mobile subscriber identity and said called party number.