A Tradition of Excellence

Since 1997, Cornerstone Communications, Inc. has delivered superior phone system maintenance solutions to businesses of all sizes. By consistently providing excellent service to Avaya and Nortel product users, we have built a solid reputation of professionalism and reliability. Our dedicated team of experts share one common goal: to provide the finest personal service and customer support available in the telecom industry.

Cornerstone Communications is your complete solution for telecom maintenance and monitoring of all Avaya and Nortel product lines including legacy Lucent and AT&T products. We are a full service telecom maintenance provider. We are NOT an insurance company. Cornerstone Communications offers a wide range of service options to both private businesses and government agencies. Our variety of telecom solutions include the Premium Protection, Partnership, Legacy and GSA Maintenance Programs as well as 24/7 Secure Watch Monitoring and Web Portal Ticketing Services; all backed by a 100% Satisfaction Guarantee.

We take great pride in providing our clients an unsurpassed level of support. For almost two decades Cornerstone Communications has raised the standard of service for the telecom maintenance industry. As we move forward, we will continue this tradition of excellence with a spirit of creativity and innovation that benefits the customers we proudly serve.


Contact a Cornerstone Communications representative today to discover the best solution for your telecom maintenance service.

Cornerstone Communications Inc is a BBB Accredited Business. Click for the BBB Business Review of this Telephone Communications in Saint Louis MO