" We were looking for a single point of contact for our telecom service needs to handle our national footprint and supplement our corporate telecom department. Tandem Data is very responsive in getting our requests handled in a timely manner. I cannot imagine using another group after this experience."

M. Howsen, Director IT, Cross Point Funding


Avaya IP Office Special - phones Dallas

Avaya Special - phones Dallas

Avaya Certified Business Partner - phones Dallas

Nortell Authorized Reseller - phones Dallas

Zultys Authorized Reseller

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Tandem Data Resource Group Phone Systems Dallas-Fort Worth

Connecting Companies for Tomorrow.

Nationwide Sales, Service & Support


Business phone systems, voice & data cabling, and Wireless Network Design & Installation. These are the products and services that have made Tandem Data Resource Group a leading name in the telecommunications industry and in the Dallas-Fort Worth area. But our reach doesn't stop there. We also have the experience and resources to extend our expertise in project management and implementation to clients with multiple locations across the nation. Tandem Data was created to provide a single point of contact for all your telecommunications needs while delivering industry leading customer service and support.

Business Telephone Systems
Tandem Data is a leading provider of business phone systems in Dallas-Fort Worth, for companies ranging from small to large. We sell, install, service, and maintain telephone systems from Avaya, Nortel and Zultys in Dallas and Nationwide:

New Systems

Avaya Phone Systems Dallas
Zultys Phone Systems Dallas

Legacy Systems
Voice / Data / Fiber Optic Cabling
Tandem Data offers network design and installation for local area networks and wide area networks. Whether a single office or a multi-location company, we can help with:
  • Cat3, Cat5e, Cat6 Cabling
  • Coaxial Cabling
  • Fiber Optic Cabling
Wireless Networking Solutions
Tandem Data provides expert wireless network planning, installation and support. By understanding the unique needs of a business, we can offer turnkey solutions including:
  • Indoor Wi-Fi and Wireless
  • Outdoor Wi-Fi and Wireless
  • Wireless Bridges
  • Wireless Backhaul
  • Wireless Voice Over IP (VoIP)
  • Indoor cellular and Distributed Antenna Systems