An arrangement for the detection of fraudulent use of a telephone subscriber's instrument in a mobile telephone system includes an input preprocessor (110), a neural network engine (111) coupled to the preprocessor, and an output postprocessor (112) coupled to the neural network engine. The preprocessor...http://www.google.de/patents/US5966650?utm_source=gb-gplus-sharePatent US5966650 - Detecting mobile telephone misuse
