ACCESS CONTROL AND FRAUD PREVENTION DEVICE FOR TELEPHONE SERVICES

摘要

This invention performs policing functions for specialized telephone service s, and mitigates fraudulent usage of such services. It sees application ubiquitous telephone networks that car ry voice, facsimile or voice-band-data traffic. Signal processing is used to determine the properties of traffic pr esent on a channel at a given point in time, and actions are conditionally imposed based on said traffic propert ies. Embodiments of the invention can be applied to prevent fraudulent use of telephone services through suppr ession of the answer supervision response. Embodiments of the invention can also be applied for regulation to specialized telephone services which depend on the manner of customers' use of such services./SDO AB