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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 ...
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]
Current numbering plan. On 1 December 1998, Spain changed to a new telephone numbering plan. [8] Under the closed numbering plan with the trunk prefix '9' being incorporated into the subscriber's number, so that a nine-digit number was used for all calls, e.g.: [9] 9xx xxx xxx (within Spain) +34 9xx xxx xxx (outside Spain)
The combination of phone number lookups, along with Internet access, was offered by some service providers; VoIP (Voice over IP) was an additional feature. History The first telephone directory, printed in New Haven, Connecticut, United States, in November 1878. Telephone directories are a type of city directory. Books listing the inhabitants ...
Telephone system: generally adequate, modern facilities domestic: NA; international: 22 coaxial submarine cables; satellite earth stations - 2 Intelsat (1 Atlantic Ocean and 1 Indian Ocean), NA Eutelsat; tropospheric scatter to adjacent countries; Radio. Radio broadcast stations: AM 208, FM 715, shortwave 1 (1998) Radios: 13.1 million (1997 ...
On 3 February 1924, the first automatic telephone exchange in Spain is inaugurated in Balaguer. On 19 April 1924, The Spanish National Telephone Company is constituted and in 1925, the Commonwealth's telephone network becomes part of the Spanish National Telephone Company. Telephone service is instituted between Spain and the United States in 1928.
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. [3]
Telefónica, S.A. Telefónica, S.A. ( Spanish pronunciation: [teleˈfonika]) is a Spanish multinational telecommunications company headquartered in Madrid, Spain. [3] It is one of the largest telephone operators and mobile network providers in the world.