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About: Herrmann wall telephone     Goto   Sponge   NotDistinct   Permalink

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The Herrmann wall telephone, also known as the "privileged phone", was a type of telephone, created by the Portuguese inventor, , in 1880. The pioneering use of buttons to activate the telephone played a fundamental role to the opening of public lines in the main cities of Portugal. The telephone was composed by a double earpiece, made with long flexible tubes, and a transmitter fixed to main body of the machine.