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Acoustic Coupler
Acoustic Coupler is used
for mixturing Electric Signals by Acoustic ways or 'Sound'
Ways.

Acoustic Signals "Acoustic" is the science
dealing with the study of sound. This Coupler is basically
an interface device which combines signals into or out of a
telephone. Acoustic Coupler can be said as a
electronics device used
to connect other data units with Telephone.
.. ..
This connection
is possible due to sound signals. No direct electrical
connection is done in this case. Acoustic Couplers are also
used to connect
modems
to
the
Telephone.
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