CornerStone Communications Inc. Email Format

TelecommunicationsWisconsin, United States11-50 Employees

CornerStone Communications Inc. is a telecommunications company based in Big Bend, Wisconsin, founded in May 1998. It began as one of the first AT&T channel partners and has since grown into a small to mid-sized firm that supports a broad range of internet carriers.

Over time, CornerStone broadened its offerings to include networking equipment support starting in 2002, then ShoreTel/Mitel premise phone systems in 2007, and UCaaS solutions such as RingCentral in 2017. It serves customers across the US, Central America, Europe, and Asia, prioritizing reliability in data, networking, and communications. The company collaborates with major carrier brands and UCaaS providers to meet data, voice, and connectivity needs.

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