Ma Bell's Century: 6,000 Rivals, a 1984 Breakup and the Quiet Reunion

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For most of the 20th century the Bell System was the American telephone network, from the research labs to the phone you were required to rent. In 1899 its Boston parent, American Bell, was absorbed by its own New York long distance subsidiary, AT&T, to take advantage of friendlier corporate and tax law. When the founding patent expired in 1894, roughly 6,000 independent phone companies sprang up, but they refused to interconnect, leaving businesses with three phones on one desk. Theodore Vail, back as president in 1907, sold the idea of a natural monopoly under the slogan "one policy, one system, universal service," and the 1913 Kingsbury Commitment traded the Western Union stake for decades of regulated peace.

A 1949 antitrust suit ended in the 1956 consent decree, which kept AT&T out of commercial computing and made its existing patents royalty free, including the transistor from Bell Labs. Microwave towers let MCI undercut long distance rates between Chicago and St. Louis, and a 1974 Justice Department suit led to the January 1, 1984 divestiture into seven Baby Bells. After the Telecommunications Act of 1996, the pieces bought each other back: Southwestern Bell absorbed Pacific Telesis, Ameritech and finally AT&T itself, while Bell Atlantic and NYNEX became Verizon.

• Customers could not attach a non Bell phone without paying the company to rewire it and leasing the device monthly.
• The 1956 decree capped AT&T at 85 percent of the national phone network and forced it to shed Nortel and a 54 percent stake in Japan's NEC.
• The seven Baby Bells were Ameritech, Bell Atlantic, BellSouth, NYNEX, Pacific Telesis, Southwestern Bell and US West.
• Saul Bass redesigned the Bell logo in 1969; Cincinnati Bell, the last U.S. holdout, rebranded as altafiber in 2022.
• By 2026 AT&T is retiring the copper landline network that the Bell System spent a century building.