CornerStone Communications Inc. Information

CornerStone Communications Inc. is a telecommunications company founded in May of 1998 based out of Wisconsin. Starting as one of the first AT&T channel partners, we have grown to support nearly every internet carrier on the market. Along the way, we began to fully support Cisco and HP networking equipment in 2002, ShoreTel/Mitel premise phone systems in 2007, and UCaaS solutions including RingCentral in 2017. We service customers across the US, Central America, Europe, and Asia with a focus on top-tier reliability. Working with many of the household carrier brands, Cisco, and a multitude of UCaaS solutions, we are a one stop shop for data, networking, and communication needs. Priding ourselves on responsiveness and our capability to troubleshoot voice and data issues all of the way down the line, we've been successful in supporting our customers wherever and whenever they need us.