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The telephone important dates
1. 1874 Principal of telephone was uncovered.
2. 1876 Alexander Graham Bell invents telephone, beating Elisha Gray by a matter of hours.
3. 1877 The very first permanent outdoor telephone wire was completed. It stretched a distance of just three miles. This was closely followed in U.S. by worlds first commercial telephone service.
4. 1878 The workable exchange was developed, which enabled calls to be switched between subscribers rather than having direct lines.
5. 1879 Subscribers began to be designated by numbers and not their names.
6. 1880s Long distance service expanded throughout this period using metallic circuits.
7. 1888 Common battery system developed by Hammond V. Hayes, allows one central battery to power all telephones on an exchange, rather than relying on each units own battery.
8. 1891 First automatic dialling system invented by a Kansas City undertaker. He believed that crooked operators were sending his potential customers elsewhere. It was his aim to get rid of operators altogether.
9. 1900 First coin operated telephone installed in Hartford, Connecticut.
10. 1904 French Phone developed by Bell Company. This had transmitter and receiver in a simple handset.
11. 1911 American Telephone and Telegraph (AT & T) acquire Western Union Telegraph Company in a hostile takeover. They purchased stocks in company covertly and two eventually merged.
12. 1918 It was estimated that approximately ten million Bell system telephones were in service throughout U.S.
13. 1921 The switching of large numbers of calls was made possible through use of phantom circuits. This allowed three conversations to take place on two pairs of wires.
14. 1927 First transatlantic service from New York to London became operational. The signal was transmitted by radio waves.
15. 1936 Research into electronic telephone exchanges began and was eventually perfected in 1960s with electronic switching system (SES).
16. 1946 Worlds first commercial mobile phone service put into operation. It could link moving vehicles to a telephone network via radio waves.
17. 1947 Microwave radio technology used for first time for long distance phone calls.
18. 1947 The transistor was invented at Bell laboratories.
19. 1955 Saw beginning of laying of transatlantic telephone cables.
20. 1962 The worlds first international communications satellite, Telstar was launched.
21. 1980s The development of fibre optic cables during this decade, offered potential to carry much larger volumes of calls than satellite or microwaves.
22. 1980s, 1990s, to present Huge advances in micro electronic technology over last two decades have enabled development of cellular (mobile) phones to advance at a truly astonishing rate. A cellular (mobile) phone has its own central transmitter allowing it to receive seamless transmissions as it enters and exits a cell.
Some people believe impact of telephone has had on our lives is negative. Whatever your beliefs, it is un-doubtable that invention and development of telephone has had a massive impact on way we live our lives and go about our every day business.
Jason Morris is co-author, search engine optimization and marketing consultant of Business Phone Systems Direct. Specialists in the supply and installation of business phone systems and accessories