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Timeline of the telephone

From Academic Kids

A Timeline of the history of the telephone.

Contents

1849-1875

1876-1878

1879-1919

1927-1995

  • 1927 First trans-atlantic phone call
  • 1935 First telephone call around the world.
  • 1941 Touch Tone dialing introduced for operators in Baltimore, Maryland
  • 1946 National numbering plan (area codes)
  • 1946 First commercial mobile phone call
  • 1946 Bell Labs develops the germanium point contact transistor
  • 1951 Direct Distance Dialing (DDD) first offered at Englewood, New Jersey, to 11 selected major cities across the United States; this service grew rapidly across major cities during the 1950s, but did not become widespread until the 1960s.
  • 1958 Modems used for direct connection via voice phone lines
  • 1960 ESS-1
  • 1961 Touch-tone released to public
  • 1962 T-1 service in Skokie, Illinois
  • 1970 ESS#2 electronic switch.
  • 1970 Modular telephone cords and jacks introduced
  • 1975 Last manual telephone switchboard in Maine is retired
  • 1982 Caller ID patented by Carolyn Doughty, Bell Labs
  • 1982 Bone, Idaho gets phone service (last in the US)
  • 1987 ADSL introduced
  • 1993 Telecom Relay Service available for the disabled
  • 1995 Caller ID implemented nationally

See also

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