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Commercial codes were not generally intended to keep telegrams private, as codes were widely published; they were usually cost-saving measures only. Many general-purpose codes, such as the Acme Code and the ABC Code , were published and widely used between the 1870s and the 1950s, before the arrival of transatlantic telephone calls and next-day ...
A wire signal is a brevity code used by telegraphers to save time and cost when sending long messages. The best-known code was the 92 Code adopted by Western Union in 1859. The code was designed to reduce bandwidth consumption over telegraph lines, thus speeding transmissions by utilizing a numerical code system for frequently used phrases.
Western Union Telegraph Building, lithograph. The Western Union Company is an American multinational financial services corporation headquartered in Denver, Colorado.. Founded in 1851 as the New York and Mississippi Valley Printing Telegraph Company in Rochester, New York, [3] the company changed its name to the Western Union Telegraph Company in 1856 after merging with several other telegraph ...
The TWX system and the use of the special US area codes continued until 1981, when Western Union completed the conversion to the Western Union Telex II system. Canada moved its TWX-numbers, as well as Datalink services, to the non-geographic area code 600 , effective October 1, 1993, in exchange for returning 610.
Automatic Telegraph Switching System Plan 55-A was one in a series of store and forward message switching systems developed by Western Union and used from 1948 to 1976 for processing telegrams. [1] It is an automated successor to Plan 51, which commenced service in 1951 in a nationwide network of the U.S. Air Force, but required semi-automatic ...
Download QR code; In other projects Appearance. move to sidebar hide ... English: Member states of the Western Union (1948 - 1954) Date: 17 April 2018: Source: Own work:
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