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Pager. A pager, also known as a beeper or bleeper, [1] is a wireless telecommunications device that receives and displays alphanumeric or voice messages. One-way pagers can only receive messages, while response pagers and two-way pagers can also acknowledge, reply to, and originate messages using an internal transmitter. [2]
Alexander Graham Bell was awarded the first U.S. patent for the invention of the telephone in 1876. Elisha Gray, 1876, designed a telephone using a water microphone in Highland Park, Illinois. Tivadar Puskás proposed the telephone switchboard exchange in 1876. Thomas Edison invented the carbon microphone which produced a strong telephone ...
"The Barclay-Vesey Building for the New York Telephone Company". Architecture and Building. Vol. 58, no. 10. October 1926. p. 109. hdl:2027/mdp.39015086591776. This article incorporates text from this source, which is in the public domain. {{cite magazine}}: CS1 maint: postscript "The New Telephone Building at 140 West Street". Telephone Review ...
Al Gross (engineer) Irving " Al " Gross (/ ɡroʊs /; February 22, 1918 – December 21, 2000) was a pioneer in mobile wireless communication. He created and patented many communications devices, specifically in relation to an early version of the walkie-talkie, [1] Citizens' Band radio, [2] the telephone pager [2] and the cordless telephone.
1931: The Ericsson DBH 1001 telephone was the first telephone without a separate ringer box. [32] 25 April 1935: First telephone call around the world by wire and radio. [23] 1937: The Western Electric type 302 telephone becomes available for service in the United States. 8 December 1937: Opening of fourth transcontinental telephone line. [23]
The world's first telephone exchange took place on Jan. 28, 1878. Three weeks later, Coy published a list of New Haven's 50 phone subscribers (names of people and businesses only, as phone numbers ...
The Faraday Building is in the south-west of the City of London. The land was first acquired by the General Post Office in the 1870s, for the Post Office Savings Bank. In 1902 it was converted to a GPO telephone exchange serving sections of London, and underwent several capacity expansions over the next several years.
Highgate Wood telephone exchange. Coordinates: 51°35′18″N 0°8′51″W. The Highgate Wood exchange building. Highgate Wood telephone exchange was the first all-electronic telephone exchange in Britain. It was built in Grand Avenue, in the London suburb of Muswell Hill, [1] by members of the Joint Electronic Research Council (JERC).