| 摘要 |
<p>In an electrical device for controlling functional units and processing data, for connection to an external data network communicating signals, and for switching between quiescent and active states, the improvement includes a control unit for controlling the functional units and having lines connected to the network for receiving signals starting data processing at the device, a power supply unit for supplying the units with energy, the supply unit primary side to be connected to a voltage supply and connected to the control unit, an electrical switch, connected to and switching the supply unit, entering into an open position and disconnecting the primary side from the voltage supply network in the quiescent state, and entering into a closed position dependent upon the power received from the ringing signal in the active state, and the switch remaining in one of the positions based upon the energy from the supply unit.</p> |
