Motorola Corporation

Frank C Pennypacker

Louis D Finkelstein

Daniel P Brown

Richard J Corrigan

Timothy M Burke

Jonas Butvila

Eva Labowicz

Vladimir Dvorkin

James A Fisher

Louis David Finkelstein

Daniel Peter Brown

A cable communication system (,) where a control unit (,) sends operation parameters to subscriber units (,) and the subscriber units (,) respond by modifying the method of communication. Also, the subscriber units (,) send messages which include information on the subscriber unit (,) and the capabilities of the subscriber unit (,). Furthermore, the control unit (,) efficiently manages the system,by monitoring the capabilities and instructing the subscriber units (,) on-how to communicate on the system (,). Such management allows for the migration of subscriber units (,) from one service area (,) to another (,) without the disruption of service. In addition, initialization of subscriber units (,) may be accomplished over the cable and does not require an operator at the subscriber location.

Cable communication system and method for management

A system (100) and method of improving activation security allows a remote device (104) to identify that there is a difference between a first signal transmitted by a central site (102) and a first signal received by the remote device. A derived number is used. The derived number can be displayed to the user for verbal verification by the user, or the derived number can be used internally of the remote device, or the central site, for verification that is transparent to the user. A significant amount of security is added without substantially altering the communication protocol.

Communication method and device

A method for detecting fraudulent use of a communication system (10) includes the steps of determining a system parameter associated with a subscriber unit (32). The system then compares the system parameter to a previous system parameter for the subscriber unit (32). An alarm is set when the system parameter differs more than a predetermined amount from the previous system parameter.

Method for detecting fraudulent use of a communication system

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Arlington Heights, IL, United States of America

Frank C Pennypacker