(262) 662-9915


Leader in innovation, design and market capture of UCaaS (Unified Communications as a Service) phone systems.  Provides simple administration, easy deployment and an all-inclusive communications tool.  Scales extremely well from SMB to Enterprise level application. 

A leading Global Cloud Communication Platform & Collaboration Software for Enterprises. Fuze offers Superior voice quality and uptime through unmetered calling to over 110 countries with over 50 carriers, providing an ideal option for enterprises with a wide-range global footprint. With a Global Support NPS of 80, we will ensure you get full value out of your Fuze deployment.

Flexible solution that offers robust UCaaS, on-premise and hybrid options.  Their strength is their versatility and history in the industry.

Advance your business’s communication with the best-in-class cloud operating system. Vonage offers flexible and scalable voice, messaging, video and data capabilities across Unified Communications, Contact Centers and Communications APIs. Great for any size, from small sites to large enterprise.


Digital transformation of the customer experience has had a huge impact on the needs of a successful contact center. Customers now communicate through multiple mediums and it’s more important than ever to be able to keep it all organized and provide a rewarding experience that keeps them coming back. Technological advancements in contact center platforms are staggering. CornerStone has spent countless hours researching and implementing the leading solutions.

Interested in a FREE IT Audit?