Timeline of the telephone
A Timeline of the history of the telephone.
1849-1875
1876-1878
1879-1915
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
- 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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