About Us



Serving the Dallas / Fort Worth area’s telecom needs for over a quarter century, National Telesystems has serviced and installed telephone systems for over 10,000 Dallas/Fort Worth area businesses. Our experience, reputation, and stability have empowered us to offer more choices and better solutions to our customers. As a total-solution vendor, National Telesystems offers a host of products and services that improve your communications, increase your productivity, and enhance your organization’s image.


National Telesystems’ experienced, friendly Customer Service and Technical Team provide exceptionally fast response to our customers’ telecommunications needs. A fully staffed customer help desk, factory-certified technicians available 24/7, and stocked local warehouses in both Dallas and Ft. Worth assure superior service in the critical area of a business’s telecommunications system.

Award Winning Products

NTI prides itself on a carefully selected product line of the highest quality systems that are specifically designed for small to medium sized businesses. Among the business phone systems National Telesystems supports are NEC, Samsung, Prostar, Vodavi, Infinite, Starplus, Avaya, AT&T, Lucent, Merlin, Partner, Spirit, Nortel, Norstar, Meridian, WIN, TIE, Southwestern Bell, Landmark, and Toshiba. Voice Mail and Voice Processing systems include NEC AspireMail, NEC IntraMail, NEC DFX, Telekol, and the various Samsung (Starmail, Cadence, SVMi-4, SVMi-8) and Vodavi (Pathfinder, Talkpath, MiniVoice) product lines.

New, Used & Refurbished

We maintain a huge inventory of New, Used, and Refurbished equipment in our DFW warehouses. Whether you need an entire system or a single component, new or refurbished, in-house stock is critical in meeting the needs of our customers quickly and completely.


Peripherals installed, supported, and serviced by National Telesystems, Inc. include Paging Systems (i.e., Valcom Paging Speakers, Bogen horns, J.W. Davis amplifiers, and other major brands), Call Accounting Packages, Automated Attendant Systems, Message On Hold Units, Music On Hold Systems, Call Center Management, ACD, UCD, Caller ID, Door Phone assemblies, Headsets, and UPS / Battery Backup Units. Also, as a leading interconnect in Dallas and Fort Worth, NTI provides computer network cabling and wiring (data cabling), VOIP options, PRI, BRI and T1 capabilities, Remote Programming, and integration of the numerous advanced features offered by today’s key systems and PBX systems.


  • Addison
  • Aledo
  • Allen
  • Alvarado
  • Argyle
  • Arlington
  • Aubrey
  • Azle
  • Balch Springs
  • Bedford
  • Benbrook
  • Burleson
  • Carrollton
  • Cedar Hill
  • Cleburne
  • Colleyville
  • Coppell
  • Corinth
  • Crowley
  • DFW
  • Dallas
  • Decatur
  • Denton
  • Desoto
  • Duncanville
  • Ennis
  • Euless
  • Farmers Branch
  • Flower Mound
  • Forest Hill
  • Forney
  • Fort Worth
  • Frisco
  • Worth
  • Garland
  • Granbury
  • Grand Prairie
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  • Haltom City
  • Haslet
  • Highland Park
  • Highland Village
  • Hurst
  • Irving
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  • Lake Worth
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