Adams Telecom is a leading provider for Key & PBX Systems. In the 5 to 40-employee range, key systems are most typical. This type of phone system uses a central control device called the key system unit (KSU) to provide features that are not available with ordinary phones. For example, a central unit typically allows users to make calls to another in-office extension, and prevents other users from accidentally picking up a line that is being used. Modern Key systems also come standard with most features a business would expect – but in some cases they are less customizable . If your company has more than 40 employees, or if you need advanced functionality, PBX systems are the best solution. You may know PBX systems as the massive telecom cabinets used by huge companies. While that still can be the case for large installations, the technology has progressed to the point where a powerful PBX for a small company can sit unobtrusively on a desk.

Our Key & PBX Systems services include

  • Hardware Procurement
  • Staging and Configuration
  • On site Installation
  • Cabling
  • Maintenance
  • Repairs

Why choose us?


We are a Small Business and we work with business of all sizes. We believe that everyone should have access to world class technology products no matter what the size of the organization is.


ATS has been around for more than a decade and our team has years of experience in setting up and installing PBX systems that lasts for years. Our technicians are trained to configure your PBX based on your needs.


Our team creates a design that is aesthetically pleasing and well organized with rack mounts, ergonomic mounting, and cable management which provides a clean and professional look and allows for easier care and maintenance. We also take care to work around our client’s schedule to ensure we do not disrupt their day-to-day business.

Contact us for Key & PBX Phone Systems

Contact Us


1915 E Broadway Ave

Maryville, TN, 37804


Business Hours

Mon – Fri: 8:00 AM – 5:00 PM

Sat – Sun: Closed

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