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  2. History of the telephone - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telephone

    Old Receiver schematic, c.1906 A German rotary dial telephone, the W48 Top of cellular telephone tower By 1904, over three million phones were connected by manual switchboard exchanges in the U.S. [ 32 ] By 1914, the U.S. was the world leader in telephone density and had more than twice the teledensity of Sweden, New Zealand, Switzerland, and ...

  3. Timeline of the telephone - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_telephone

    1667 to 1875. 1667: Robert Hooke creates an acoustic string telephone that conveys sounds over a taut extended wire by mechanical vibrations. [1][2] 1844: Innocenzo Manzetti first suggests the idea of an electric "speaking telegraph", or telephone. 1849: Antonio Meucci demonstrates a communicating device to individuals in Havana.

  4. History of the telephone in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telephone...

    Constant touch: A global history of the mobile phone (Icon Books, 2013) online. Brooks, John. Telephone: The first hundred years (Harper & Row, 1976). online, popular history focused on AT&T leadership. Bruce, Robert V. Bell : Alexander Graham Bell and the conquest of solitude (1990) online; Campbell-Kelly, Martin, and Daniel D. Garcia-Swartz.

  5. Invention of the telephone - Wikipedia

    en.wikipedia.org/wiki/Invention_of_the_telephone

    Because of illness and other commitments, Bell made little or no telephone improvements or experiments for eight months until after his U.S. patent 174,465 was published., [26] but within a year the first telephone exchange was built in Connecticut and the Bell Telephone Company was created in 1877, with Bell the owner of a third of the shares ...

  6. History of telecommunication - Wikipedia

    en.wikipedia.org/wiki/History_of_telecommunication

    History of telecommunication. A replica of one of Claude Chappe 's semaphore towers (optical telegraph) in Nalbach, Germany. The history of telecommunication began with the use of smoke signals and drums in Africa, Asia, and the Americas. In the 1790s, the first fixed semaphore systems emerged in Europe. However, it was not until the 1830s that ...

  7. Telephone - Wikipedia

    en.wikipedia.org/wiki/Telephone

    An old rotary dial telephone. AT&T push button telephone made by Western Electric, model 2500 DMG black, 1980. A telephone, colloquially referred to as a phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically ...