• Thumbnail for Bell System
    The Bell System was a system of telecommunication companies, led by the Bell Telephone Company and later by the American Telephone and Telegraph Company...
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  • Thumbnail for Diving bell
    diving bell is not designed to move under the control of its occupants, or to operate independently of its launch and recovery system. The wet bell is a...
    55 KB (7,209 words) - 13:51, 12 April 2025
  • Thumbnail for Breakup of the Bell System
    The Bell System held a virtual monopoly over telephony infrastructure in the United States since the early 20th century until January 8, 1982. This divestiture...
    22 KB (2,727 words) - 03:06, 1 May 2025
  • Thumbnail for Bell Labs
    awarded for work completed at Bell Laboratories. Bell Labs had its origin in the complex corporate organization of the Bell System telephone conglomerate. The...
    116 KB (12,238 words) - 01:31, 7 May 2025
  • Thumbnail for Bell Canada
    Bell Canada (commonly referred to as Bell) is a Canadian telecommunications company headquartered at 1 Carrefour Alexander-Graham-Bell in the borough of...
    50 KB (4,950 words) - 21:52, 26 April 2025
  • yearly by the IEEE society. The journal was originally established as The Bell System Technical Journal (BSTJ) in New York by the American Telephone and Telegraph...
    11 KB (1,108 words) - 06:21, 6 May 2025
  • Thumbnail for Regional Bell Operating Company
    as an "ILEC" (Incumbent Local Exchange Carrier) they were the former Bell System or Independent Telephone Company responsible for providing local telephone...
    14 KB (1,594 words) - 00:52, 15 March 2025
  • Thumbnail for Pager
    Pager (redirect from Pocket Bell)
    popular as of July 2016. In 1962, the Bell System, the U.S. telephone monopoly, presented its Bellboy radio paging system at the Seattle World's Fair. Bellboy...
    32 KB (3,522 words) - 06:49, 10 May 2025
  • While part of the Bell System, it was at times the biggest Bell Operating Company of AT&T's 22 local telephone companies. Southwestern Bell continued to grow...
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  • Thumbnail for Alexander Graham Bell
    Alexander Graham Bell (/ˈɡreɪ.əm/; born Alexander Bell; March 3, 1847 – August 2, 1922) was a Scottish-born Canadian-American inventor, scientist, and...
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  • depends on which Bell's state the two qubits are in initially. Bell's states can be generalized to certain quantum states of multi-qubit systems, such as the...
    20 KB (2,848 words) - 01:26, 20 March 2025
  • Thumbnail for Southern Bell
    off to form South Central Bell. In 1984, it became a subsidiary of BellSouth Corporation in the breakup of the Bell System. The company was originally...
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  • Thumbnail for Bell Telephone Company
    The Bell Telephone Company was the initial corporate entity from which the Bell System originated to build a continental conglomerate and monopoly in telecommunication...
    32 KB (3,945 words) - 19:00, 26 April 2025
  • Packard Bell Corporation from Teledyne; in spite of similarities in their names, Packard Bell has no connection to either Hewlett-Packard or Bell System. Packard...
    43 KB (4,405 words) - 20:08, 9 May 2025
  • communications devices and switching centers. DTMF was first developed in the Bell System in the United States, and became known under the trademark Touch-Tone...
    19 KB (2,098 words) - 22:28, 25 April 2025
  • Thumbnail for AT&T
    the United States through its Bell System of local operating companies. This led to AT&T's common nickname of "Ma Bell". The company was formally rebranded...
    157 KB (13,669 words) - 04:36, 9 May 2025
  • Thumbnail for Bell Labs Holmdel Complex
    years as a research and development facility, initially for the Bell System and later Bell Labs. The centerpiece of the campus is an Eero Saarinen–designed...
    28 KB (2,541 words) - 18:58, 4 May 2025
  • The Bell System Practices (BSPs) is a compilation of technical publications which describes the best methods of engineering, constructing, installing...
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  • Thumbnail for Bell 202
    The Bell 202 modem was an early (1976) modem standard developed by the Bell System. It specifies audio frequency-shift keying (AFSK) to encode and transfer...
    4 KB (442 words) - 21:48, 26 January 2025
  • Thumbnail for T-carrier
    T-carrier (redirect from T-carrier system)
    carrier systems developed by AT&T Bell Laboratories for digital transmission of multiplexed telephone calls. The first version, the Transmission System 1 (T1)...
    18 KB (2,669 words) - 19:12, 17 December 2024
  • Thumbnail for BellSouth
    BellSouth, LLC (stylized as BELLSOUTH and formerly known as BellSouth Corporation) was an American telecommunications holding company based in Atlanta...
    15 KB (1,509 words) - 10:15, 6 April 2025
  • Thumbnail for AT&T Corporation
    AT&T Corporation (redirect from Bell AT&T)
    services to businesses, consumers, and government agencies. During the Bell System's long history, AT&T was at times the world's largest telecommunications...
    41 KB (4,485 words) - 06:30, 29 April 2025
  • Bell Telephone refers to the Bell System of companies, led by the Bell Telephone Company and later by AT&T, which provided telephone services to much of...
    689 bytes (127 words) - 01:38, 29 January 2018
  • Thumbnail for North American Numbering Plan
    1940s by the American Telephone and Telegraph Company (AT&T) for the Bell System and the independent telephone companies in North America in Operator...
    71 KB (8,599 words) - 02:58, 7 May 2025
  • Thumbnail for Telephone
    Telephone (redirect from Telephone bell)
    emergency situations, when the local communications system can be compromised. Telephones portal Bell System Bell Telephone Memorial Cellular network Cordless...
    57 KB (6,098 words) - 16:28, 4 May 2025
  • Thumbnail for Verizon
    Verizon (redirect from Bell Atlantic)
    company was formed in 1983 as Bell Atlantic as a result of the breakup of the Bell System into seven companies, each a Regional Bell Operating Company (RBOC)...
    125 KB (10,477 words) - 13:56, 30 April 2025
  • Thumbnail for Registered jack
    were first defined in the Universal Service Ordering Code (USOC) of the Bell System in the United States for complying with the registration program for...
    32 KB (3,261 words) - 20:08, 19 January 2025
  • from the 1910s through the 1984 Bell System divestiture was The Pacific Telephone and Telegraph Company. The “Pacific Bell” was phased out of public use...
    19 KB (2,216 words) - 12:04, 29 March 2025
  • Thumbnail for Unix
    Unix (redirect from Unix system)
    multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken...
    59 KB (6,135 words) - 21:49, 25 April 2025
  • Communication" is an article by mathematician Claude E. Shannon published in Bell System Technical Journal in 1948. It was renamed The Mathematical Theory of...
    10 KB (857 words) - 00:11, 4 January 2025