The software copies the functions of the complicated bits of hardware with programming and then runs them on ordinary, mass-produced hardware. Users have the freedom to add capacity quicker and drive out upgrades through the internet at a rate faster than usual. AT&T powers its network-integrated software with innovations such as SDN (software-defined networking) and NFV (network function virtualization) (AT&T, 2015).The development and implementation of these technology systems at AT&T began with the foundation of the company by its pioneers. Alexander Graham Bell marked the beginning of the communications technology system at AT&T the invention of the telephone in 1876 (Parisian, 2015). Between 1910 and 1920, AT&T pioneered intercontinental telephone calls, as well as air to ground and ground to air radio infrastructures. By 1929, AT&T had set up an intercontinental telephone service, broadband coaxial cable, and long-distance television broadcasting (Olsen et al.AT&T developed stereophonic recordings, radio technology for astrophysics research, artificial speech, a high frequency sensor, and the company’s first digital computer in 1939 (Parisian, 2015). The digital computer paved way for AT&T’s resultant ICT solutions. In the course of World War II, AT&T developed a compound number generator and Touch Tone Telephone in 1941. In 1946, AT&T pioneered in making a mobile telephone call that set the way for the current UC solutions. AT&T invented the transistor the following year and Error Correction in 1948 (Hoque et al.The 1950s for AT&T saw the First Direct-Dial Intercontinental Telephone Call, the invention of the Solar Cell, the creation of Microwave Radio-Delay Skyway,. Technology Systems at AT&T.
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