Long Distance phone service.

Business Phones

Choosing the right phone system can let you enhance customer interactions, cut costs, and connect with remote employees. Let CornerStone’s team of experts help you select the communication platform that will support your unique business challenges.

CornerStone Case Study - Healthcare

Utlizing our technology experts and our deep experience of healthcare industry trends and issues, CornerStone proposes new ideas and opportunities to enhance Berkshire Health System's business.  Download the case study to learn more about how CornerStone can provide cost effective solutions for the healthcare industry.

Long Distance

We offer numerous calling plans with competitive low rates, with no contract or term plans required!

Simplicity and Savings

CornerStone offers affordable long distance service plans to meet the long distance calling needs of businesses and educational institutions. Unlike other long distance telephone companies that bill in one-minute increments, we bill in 30-second minimum and 6-second increments thereafter, so you’ll save on every call. There are no contracts or term plans required and all charges appear on one easy-to-understand bill.