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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
test equipment, namely, hardware including a custom circuit having one or more of the following circuits; a neural network, telephone line modeling circuitry, a frequency generator which generates a plurality of frequencies, and memory circuits, and software either carried by the memory circuits or sold with the test equipment, for automated testing of telephone lines