AT&T Information Systems
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AT&T Information Systems, originally known as American Bell, was the fully separate subsidiary of American Telephone & Telegraph Company which focused on computer technology ventures and telephone sal
American Bell Advanced Information Systems logo
The AT&T PC 6300
Breakup of the Bell System
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The Bell System held a virtual monopoly over telephone infrastructure in the United States from around the early 20th century until January 8, 1982. It consisted of the parent American Telephone & Tel
AT&T Information Systems
…focused on computer technology ventures and telephone sales, and other unregulated business. It was one of the three core units of AT&T formed after the breakup of the Bell System. As a twenty-five percent owner, AT&T Information Systems utilized production of Olivetti to manufacture their AT&T PC 6300 series of computers. Along…
A Verizon payphone with the Bell logo