Customization of your telecom allows Cornerstone Tech to fully meet your needs.

Cornerstone Tech expertly customizes your Business telecom system to your needs. You only contract for what will increase your productivity and save you time and money.

Cornerstone is a significant supplier of telecommunications voice and data products, offering telephone and voice mail systems, data networking, paging systems and exceptional service. We install and service telecom systems throughout the states of Virginia, West Virginia, Maryland and the Washington D.C. metropolitan area for state and local governments and the private sector.


Service and products:

  • Telecommunications (telecom) & Network Systems
  • Consultation & Design
    • Voice Data & Video Communication Systems
    • Premise Wiring & Fiber Optic Systems
    • Voice Over IP Systems
    • Enterprise Voice & Data Networks
  • Voice Processing Systems
    • Voice Mail Systems
    • Automated Attendant Systems
    • Integrated Voice Response Systems
    • Predictive Dialer, Call Centers & Telemarketing
    • LAN, E-mail & Fax Integration
  • Structured Wiring Systems
    • Copper & Fiber Optic Systems
    • Factory Certified Installation & Testing
    • Inside & Outside Plant Systems
    • BICSI Corporate Member
  • Quality Assured Service
    • Extended Warranty Plans
    • Maintenance Contracts
    • Competitive Hourly Rates
    • Factory Trained & Certified Technicians
    • Long Term Warranties
  • Installation & Service
    • Telephone Systems
    • Small Office Systems
    • Digital Phone Systems
    • Wireless Phone Systems
    • Hotel & Motel Systems
    • Factory Certified LAN & Fiber Optic Installer
    • Computer Telephone Integration
    • Cloud Based Systems
    • Paging & Sound Systems
    • Security & Fire Alarm Systems
    • Audio & Visual Presentation Systems
    • Network Integrated Voice Processing
    • IP Based Systems
    • Call Center Solutions

ESI Business Phone Systems

Cornerstone Technology Services, LLC is located in Western Central Virginia. We are a financially sound company that you can depend on now and in the future. Our knowledgeable staff with years of experience in the telecom field is committed to providing excellence in products and services. Service and installation personnel are dispatched from locations throughout your service area within guaranteed response times.

Security License Numbers:
VA DCJS #11-5911
Authorized dealer for ESI, Telrad Connegy, Plantronics, & Wilson Electronics
Service provided for NEC, Avaya, Nortel, Mitel, Comdial, and Iwatsu

ESI Products:

ESI Videos:

Wilson Electronics Products:


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