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Illinois Bell Telephone Company, LLC is the Bell Operating Company serving Illinois. It is owned by AT&T through AT&T Teleholdings, formerly Ameritech . Their headquarters are at 225 West Randolph St., Chicago, IL.
Illinois Bell Telephone Company is the legal name of what has generally been known as Ameritech Illinois since 1993. The firm is the largest provider of local telephone service in the state, and recently has been at the forefront of new technologies such as fiber optics and digital switching.
Learn about the history of Illinois Bell, a phone company that served the Chicago area from 1878 to 2000. Find out how it evolved from a local operator to a regional division of SBC Communications.
- Illinois Bell Telephone Co.
Learn about the history of telephony in Chicago, from the invention of the telephone by Alexander Graham Bell to the breakup of AT&T in 1984. Find out how Illinois Bell, a Bell System company, became part of SBC Communications in 1999.
Find company research, competitor information, contact details & financial data for Illinois Bell Telephone Company of Chicago, IL. Get the latest business insights from Dun & Bradstreet.
- 225 W Randolph St FL LL, Chicago, 60606-1839, IL
- President
Oct 8, 2013 · Learn how telephones, introduced by Alexander Graham Bell, transformed Chicago and Illinois in the late 19th century. Find out about the history, service, and impact of Illinois Bell, the dominant telephone company in the area.
The Bell Telephone Company was the initial corporate entity from which the Bell System originated to build a continental conglomerate and monopoly in telecommunication services in the United States and Canada.
