| fiber optics |
(or optical fibers): Hair-thin strands of glass or plastic that use coded light signals, generated by lasers or light-emitting diodes, to transmit voice, video, or data signals. Offers wideband digital transmission. Integrated Services Digital Network (ISDN): The capability of providing an end-to-end digital network that would carry high speed data, voice, and video.
출처: www.lib.niu.edu/ipo/im870721.html
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