The Lehigh Telephone Company was established at the turn of the 20th century and was passed down through multiple owners. The last owner was Harold Aringdale. Lehigh Valley Co-op Telephone Association was incorporated on December 3, 1949. The telephone system was purchased from Mr. Aringdale in 1953.

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On July 1 1959, Lehigh Valley Co-op Telephone purchased the exchange of Callender from the Callender Mutual Telephone Company. The Harcourt Exchange from the Harcourt Co-op Telephone Company was purchased  the same year.

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In 1961 the Callender, Lehigh, and Harcourt exchanges were changed to a Stromberg-Carlson rotary dial system. All exchanges were still party lines. It wasn’t until 1967 the exchanges were upgraded to single lines, both in town and rural.

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In 1984 Lehigh Valley Cooperative Telephone Association purchased the Dayton exchange from General Telephone of the Midwest. In 1986 more construction began in all exchanges including the installation of Northern Telecom DMS-10 Digital Switches.

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In 1998 the digital switches were removed and were replaced with Northern Telecom RSCS remote switches. The main switch, a Northern Telecom DMS-100, is located in Kamrar, Iowa. This is owned by Iowa Networks Services. Also in 1998, new fiber optic equipment and cable were installed to connect all exchanges.

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