telephony Communication, often two-way, of spoken information, by means of electrical signals carried by wires or radio waves. The term was used to indicate transmission of the voice, as distinguished from telegraphy (done in and usually called "" or CW transmission), radio teletypewriter (RTTY) transmission (also called FSK for "", the modulation scheme used by such machines), and later, facimile. (1995-03-14)
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