作者: Graham Boydell , Derrick John Byford
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摘要: A system for controlling data access in a computer network comprises first means establishing (61) communication link between client (30) and server (20). The sends request (65) to the supply of item from client. selects requested store items response associates each with service telephone number. also identifies subscriber number associated request. second is then established (20) utility (10). instructs (69) (10) register call item. (66) supplied on receipt by confirmation (70) that registered.