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A cordless telephone or portable telephone has a portable telephone handset that connects by radio to a base station connected to the public telephone network. The operational range is limited, usually to the same building or within some short distance from the base station. A cordless telephone differs functionally from a mobile telephone in ...
Taking advantage of this, VTech began development on a cordless telephone, using the 900 MHz band, and in 1991 introduced the world's first fully digital 900 MHz cordless telephone. [15] [16] [17] In 2000, to expand its cordless phone business, VTech acquired the consumer telephone business of Lucent Technologies.
George H. Sweigert (1920–1999) is credited as the first inventor to patent the cordless telephone. [1] Born in Akron, Ohio, Sweigert served five years in the US Army as a radio operator in World War II in Guadalcanal, Bougainville, Fiji and New Georgia assigned to the 145th Headquarters Company under the 37th Infantry Division (United States).
30 October 1891: The independent Strowger Automatic Telephone Exchange Company is formed. 3 May 1892: Thomas Edison awarded patents for the carbon microphone based on applications lodged in 1877. 18 October 1892: Opening of telephone service between New York and Chicago (950 miles).
Digital Enhanced Cordless Telecommunications ( DECT) is a cordless telephony standard maintained by ETSI. It originated in Europe, where it is the common standard, replacing earlier standards, such as CT1 and CT2. [ 1] Since the DECT-2020 standard onwards, it also includes IoT communication. Beyond Europe, it has been adopted by Australia and ...
A business telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system ( KTS) to the private branch exchange ( PBX ). A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines ...
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