An independent telephone company was a telephone company providing local service in the United States or Canada that was not part of the Bell System organized by American Telephone and Telegraph. Independent telephone companies usually operated in many rural or sparsely populated areas.
The second fundamental Bell patent for telephones expired on 30 January 1894, which provided an opportunity for independent companies to provide telephone services, although some had been established before that date. The Strowger Automatic Telephone Exchange company had been formed on 30 October 1891. The first Strowger switch went into operation on 3 November 1892 in LaPorte, Indiana, with 75 subscribers and capacity for 99. Independent manufacturing companies were established, such as Stromberg-Carlson in 1894 and Kellogg Switchboard & Supply Company in 1897.
By 1903 while the Bell system had 1,278,000 subscribers on 1514 main exchanges, the independents, excluding non-profit rural cooperatives, claimed about 2 million subscribers on 6150 exchanges.
The size ranged from small mom and pop companies run by a husband and wife team, to large independent companies, such as GTE, Theodore Gary & Company, United Telecom, ConTel and Centel, which resembled the Bell system with vertical integration. GTE was the largest non-RBOC domestic telephone company, and included local operating companies, long line (toll) companies and manufacturing companies. A small mom and pop company might have had the husband doing the outside lines work and the wife operating a manual switchboard. Later these small companies would have a Class 5 telephone switch providing local automatic service. Much of this equipment was manufactured by the Automatic Electric Company, Stromberg-Carlson, and the Kellogg Switchboard & Supply Company.