Early phone as a commercial tool.
- 1940, the mobile phone was first used commercially. This innovation previously used as a tool of war to aim and fire improve the quality of the radar. After the war, hundreds of calls placed with using this system. Microwave radio installed for long-distance relationship.
- 1959, the Princess phone was first introduced
- 1963, telephone with voice button launched
- 1971, an independent telecommunications company allowed to mengemangkan communication systems developed for business. Millions of phone lines have used community.
- 1983, Judge Harold Greene successfully outperformed the Bell companies previously been deprived of its monopoly.
- 1899, AT & T or The American Telephone and Telegraph Company has mandapatkan assets and obtain patents from the American company Bell. AT & T was founded in 1885 as owner of the overall subsidy from the AmericanBell is in charge of establishing and operating the long distance telephone network.
- 1913, amplifirers Elektric first practiced by AT & T. This system allow for inter-continental telephone call.
- 1927, AT & T started the project of cross-Atlantic telephone service in London with using two radio channels. Yet the project is still far from ideal becausea lot of disruption in radio, has a small capacity, and cost an expensive phone. Then the project moved into a cross-pacificin 1964.
- 1969, telephone users in the United States has reached 90%. AT & T became laboratory system is the best phone in the world.
- 1990, growth in the computer which was followed by the emergence of the Internet create a pattern of sending messages from the conversation shifted to the deliverydata.
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