AT&T Inc. is the largest provider of both local and long distance telephone services, wireless service, and DSL Internet access in the United States. AT&T is based in San Antonio, Texas, United States.

Executone Systems Co of is located in New Orleans, US, and was Founded in 1947.
Executone is the most experienced telecommunications vendor serving the Greater New Orleans area. Franck LaBiche has served as the company's President and Owner since 1984.

Alaska Communications Systems is the leading integrated communications provider in Alaska, offering local telephone service, wireless, Internet, long distance and television to business and residential customers throughout Alaska.
As a facilities-based provider, ACS serves customers' needs at home, at work and while on the go.

Plateau Systems, located in Clovis, New Mexico, focuses on providing telephone services for both rural and city based customers and businesses, including high speed internet, dial up internet and mobile phone systems.