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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 ...
11 October 1881: The Sydney telephone exchange opened with 12 subscribers. 1882: A telephone company—an American Bell Telephone Company affiliate—is set up in Mexico City. 14 May 1883: The Adelaide exchange was opened, with 48 subscribers. [15] 7 September 1883: The Port Adelaide exchange was opened, with 21 subscribers. [15]
The telephone played a major communications role in American history from the 1876 publication of its first patent by Alexander Graham Bell onward. In the 20th century the American Telephone and Telegraph Company (AT&T) dominated the telecommunication market as the at times largest company in the world, until it was broken up and replaced by a ...
Alexander Graham Bell. Bell's March 10, 1876, laboratory notebook entry describing his first successful experiment with the telephone. Alexander Graham Bell had pioneered a system called visible speech, developed by his father, to teach deaf children. In 1872 Bell founded a school in Boston, Massachusetts, to train teachers of the deaf.
Telephone exchange names often provide a historical, memorable, and even nostalgic context, personal connection, or identity to a community. They can therefore often be found in popular culture, such as music, art, and prose. An old 2L-5N format appears in the song title "PEnnsylvania 6-5000" (phone number PE 6-5000), recorded by Glenn Miller.
2G also introduced the ability to access media content on mobile phones. In 1998, the first downloadable content sold to mobile phones was the ring tone, launched by Finland's Radiolinja (now Elisa). Advertising on the mobile phone first appeared in Finland when a free daily SMS news headline service was launched in 2000, sponsored by advertising.
The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators.
Telephone newspaper. Telephone Newspapers, introduced in the 1890s, transmitted news and entertainment to subscribers over telephone lines. They were the first example of electronic broadcasting, although only a few were established, most commonly in European cities. These systems predated the development, in the 1920s, of radio broadcasting.
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