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telephony

[tuh-lef-uh-nee] /təˈlɛf ə ni/
noun
1.
the construction or operation of telephones or telephonic systems.
2.
a system of telecommunications in which telephonic equipment is employed in the transmission of speech or other sound between points, with or without the use of wires.
Origin of telephony
1825-1835
1825-35; telephone + -y3
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for telephony

telephony

/tɪˈlɛfənɪ/
noun
1.
a system of telecommunications for the transmission of speech or other sounds
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for telephony
n.

1835, "a system of signaling by musical sounds;" from 1876 as "the art of working a telephone;" see tele- + -phone.

Online Etymology Dictionary, © 2010 Douglas Harper
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telephony in Technology

communications
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 opposed to telegraphy (done in Morse code and usually called "continuous wave" or CW transmission), radio teletypewriter (RTTY) transmission (also called FSK for "Frequency Shift Keying", the modulation scheme used by such machines), and later, facimile.
(1995-03-14)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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