a spy wearing headphones sits at a desk covered with electronic monitoring equipment connected to telephone wires. The spy listens intently while adjusting dials on a complex recording device. Multiple wires run from a telephone junction box on the wall to the listening equipment on the desk. The recorded conversations flow through speakers and into recording machines that capture every word. Another agent takes notes while monitoring additional phone lines through separate headphones. The basement room glows with the light from multiple monitoring screens and blinking indicator lights. a device for secretly listening to telephone conversations