Telephone: man on left is making call which passes through the operator at the exchange, centre, to recipient on the right. Ader system. Engraving published Paris 1881.

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Size: 3543px × 2491px
Photo credit: © Photo12/Ann Ronan Picture Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., /, 1881., 19th, ader, call, centre, century, communication, electric, engraving, exchange, invention, left, making, man, operator, paris, passes, published, recipient, system., telecommunications, telephone: