Secured communications system

摘要: Apparatus and method for reducing the cost complexity of equipment placed on subscribers' premises in a subscription communications system, such as cable television while at same time providing security against unauthorized system access includes microprocessor controlled frequency converter proximity to subscriber's convert information transmission signals subscriber-receivable frequencies; channel selection unit producing command signal initiate subscriber; verification circuit coupled receive signals, verify electronically instruct microprocessor. The may be provided with plural, plug-in modules feeding several subscribers made responsive subscriber generated auxiliary function from alarm detector units, utility meter reading devices, like.