a modem designed to connect a telephone handset to a computer terminal or processor.
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Origin of acoustic coupler
First recorded in 1965–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for acoustic coupler
computing a device converting computer-data signals into acoustic form for transmission down a telephone line, through the handset microphoneSee also modem
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