Importance

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Abstract

A system for powering an electric device with power drawn from a telephone line in a telephone network includes an exchange connecting a telecommunication network to a subscriber apparatus through one telephone line. The system includes a control and feeding device located at the subscriber's premises, connected between the telephone line and subscriber apparatus, and further connected to the electric device to be powered, and a logic control unit in the exchange connected between the subscriber line interface circuit of the telephone line and the telecommunication network, and a bidirectional device connected between the logic control unit and subscriber circuit for recognising and applying to the logic control unit signals received by the subscriber circuit through the telephone line, and for sending to the subscriber circuit control information generated by said logic control unit and relating to the power drawing.

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First Claim