" 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 Dallas Phone Systems

Connecting Companies for Tomorrow.

Nationwide Sales, Service & Support


Phone Systems Dallas, Voice & Data Cabling Dallas, IT Support and Computer Services Dallas

Business phone systems, voice & data cabling, wireless networking design, installation and support. These products and services have made us a leading industry provider of Dallas telecommunications. Our reach doesn't stop there though. We have the resources and experience to support clients with multiple locations across the United States. Project management and implementation is our specialty, and our national account team can provide a single point of contact for all your telecommunications needs, along with second to none customer service and support.

Business Telephone Systems -
Tandem Data provides office phone systems for small to large businesses and has hundreds of phones to select from. Our sales, installation, service and support are industry leading, as an authorized dealer for Avaya and Nortel telephone systems in Dallas and across the nation:

New Systems

Business Phone Systems Dallas
Voice / Data / Fiber Optic Cabling Dallas
Dallas, Tandem Data Resource Group, Inc. 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:
  • Category 3, 5, 6 Cabling
  • Coaxial Cabling
  • Fiber Optic Cabling
  • Wireless Connectivity
Wireless Networking Solutions
Dallas-Fort Worth, 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