Many telephone operators were also later replaced by self-dialing systems.
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The History of Communication Technology -d to hold one piece to their ear and speak into the main phone unit. A later version, the model with which we are more familiar with today, included both earpiece and mouth piece on one handle. <span>Many telephone operators were also later replaced by self-dialing systems. A History of the Telephone Alexander Graham Bell The Story of Bell’s Telephone Early 1900s Telephone Operators First-Hand Accounts of Early Phone Technology Old Telephones and Prototype
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