" 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 Garland

Avaya Special - phones Garland

Avaya Certified Business Partner - phones Garland

Nortel Authorized Reseller - phones Garland

NEC Authorized Dealer - phones Garland

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Tandem Data Resource Group Garland Phone Systems

Connecting Companies for Tomorrow.

Nationwide Sales, Service & Support


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

Business phone systems, voice & data cabling, wireless networking design, installation and support. These products and services have made us a leading industry provider of communications systems in Garland. 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 is a leading provider of business phone systems in Garland, for companies ranging from small to large. We sell, install, service, and maintain telephone systems from Avaya, Nortel and NEC in Garland and Nationwide:

New Systems

Avaya Phone Systems Garland
NEC Phone Systems Garland

Legacy Systems
Voice / Data / Fiber Optic Cabling Garland
Garland, 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
Garland, 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