CornerStone Telephone Company provides business customers with voice and data communications, cloud computing, data center se ... rvices and hosted IP products, all coupled with outstanding customer service from local support teams. Recognized by Inc. 5000 in the top 20% of the fastest-growing private companies in the US, CornerStone was ranked as 3rd fastest growing telecomm company in New York State and 34th in the US, as well as named Partner of the Year in 2012 by Parallels, a cloud and hosted services provider. If you are a business or IT owner, we will empower you with functionality and control, so you can increase the productivity of your people. Whether you want to better manage growth or consolidate voice and data services, CornerStone has multiple configuration options that can be customized to meet your specific needs. Business customers use our services to: Access high bandwidth cable access transport (CAT) for their business. Improve communications with remote offices and on-the-road employees using our hosted IP phone systems, digital PBXs and mobility features. Reduce capital expenditures, license fees, and maintenance required to maintain software and computing needs using our cloud computing and data center service products. Lower monthly expenses using a range of voice and data communication services, from local and long-distance to fiber and VPNs. read more