Winner of “Best Telephone System Provider in DFW”
for Twelve Straight Years!

  • Easy-to-Use Telephone Systems at the GUARANTEED Lowest Price
  • EXPERT Sales & Service for Over 30 Years
  • TRUSTED Telephone System Supplier and Service Company for Over 11,000 DFW Businesses

Is VoIP the best option for your Company? What about Cloud Hosted?
NTI provides FREE expert Consultation! Or schedule a FREE Demonstration at your office!

Let National Telesystems Save you HOURS
of Confusion and Stress – Call Today!

North Dallas / Collin / Denton Counties – 972-402-0459

Dallas – 214-545-6309

Fort Worth – 817-288-7640

Servicing Most Major Telephone System Brands!

VoIP Telephone Systems for Business

National Telesystems, Inc. (NTI) offers hosted, cloud, and VoIP telephones and systems for any budget. Whether you need a “hosted cloud” system or a low cost onsite VoIP or Digital telephone system, NTI has the solution for you!

Get your VoIP solutions with us today!


Business Telephone Systems

National Telesystems, Inc. (NTI) is proud to carry the finest telephone systems in the industry, including NEC, Norstar, Samsung, Avaya, Lucent, Meridian, Vodavi, Toshiba, WIN, Infinite, and Starplus – to name a few.

NTI is recognized as experts in both VoIP and standard telephone systems. This allows NTI to provide more options than our competitors do. NTI designs the right system around the customer’s needs. Other companies with one or two telecom offerings try to fit a the customer around their system. When a customer has an informed choice, everybody wins.

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Cloud and VoIP Options

VoIP Phone Systems and Hosted Cloud Systems can be the best option for your business. National Telesystems installs and services these systems every day. Choosing the correct telephone company is CRUCIAL for your business when selecting this technology.

Businesses require reliable and easy to use telephone systems. However, many businesses are extremely unhappy after they invest in the wrong VoIP system and company. Major hidden costs, horrible sound quality, and difficulty of use are more common than ever before. It can be an expensive lesson.

Experienced, Expert Technicians and Sales Engineers are THE critical components to avoid these issues.

What a huge difference NTI’s knowledge and experience with VoIP and Hosted Systems makes for our customers!

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Broadband Provider

All VoIP telephone systems are dependent on the business’ bandwidth. Most companies selecting cloud telephone systems assume bandwidth is part of their hosted cloud pricing. It rarely is. Poor bandwidth leads to those frustrating “voice lag” and “low volume” conversations. This leads callers to hang up. Many hosted providers fail to mention the likely need for higher cost and grade of bandwidth. Please be informed before signing a binding VoIP service contract.

In order avoid this confusion, National Telesystems (NTI) will quote and provide the entire service. This includes bandwidth, hand-off, and the telephone system. There are NO hidden costs with NTI.

NTI will explain the pros and cons of different bandwidth options. These range from cable companies’ inexpensive “coax” offerings all the way to high quality fiber. With over 100 broadband providers, NTI can provide the BEST bandwidth solution for you!

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VoIP Telephone Systems

VoIP may be the most misunderstood term in the industry today. Which VoIP? VoIP service? VoIP cloud? VoIP hosted? VoIP hybrid? VoIP premise-based telephone systems? Most telephone companies offer one or the other. They never mention all options.

National Telesystems offers all of these! And we explain the benefits of each to our customers.

As recognized VoIP experts, National Telesystems provides reliable, low cost, full featured solutions. This makes “misunderstood” VoIP easy for companies throughout the Dallas Fort Worth Metroplex!

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Low Monthly Payments

National Telesystems, Inc. (NTI) offers low monthly payments on both hosted telephone systems AND more robust onsite IP telephone systems. Why would a company be forced to have to give up features just to have a monthly payment option? They should not. NTI offers “all-in-one” low payment solutions.

NTI is also one of the few companies that provides our customers options to choose the best broadband and the best telephones for their needs. Options mean lower prices, and NTI always gives our customers more options!

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Network Cabling

Cat 6? Cat 6A? Plenum? Cat 5e? PVC? Cat 3? Riser? RJ11? RJ45? Choosing the correct type of cable and jacks is critical. And properly installing them is crucial as well. Wrong cable choices or poor installation can result in business killers like data slowdowns and dropped telephone calls. The most expensive computer or telephone will not work well if the correct cable is not selected and installed correctly. Millions of dollars are spent annually on service calls to fix a computer problem. Often the issue lies in poor or faulty cabling rather than the computer.
Be sure to select a company knowledgeable and experienced in both data and telephone cabling and wiring to avoid these costly pitfalls. National Telesystems is that company for Dallas Fort Worth businesses.

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Need a powerful Cloud Telephone System?

We offer Cloud Telephone System Solutions with local installation and support. And we do it for a fraction of the cost of out-of-state hosted carriers!

  • Unlimited Long Distance and Local Calling at no additional charge
  • Easy to use Top Quality Telephones at no additional charge
  • Voicemail for every phone at no additional charge
  • Hi-Definition Voice Quality at no additional charge
  • Automated Receptionist with Day, Night, and Holiday Greetings at no additional charge
  • Call Screening at no additional charge
  • Mobile Phone Merge at no additional charge
  • Telephone System Programming Access at no additional charge
  • Local Installation and Support for Quick, Professional Response
  • On Site Training to Get the Most out of your Telephone System

Lower Monthly Prices Than:
*RingCentral * Vonage * Nextiva * Shoretel * Ooma * 8x8 * Mitel
Compare and Save!
NTI's Hybrid Cloud Beats the
Competition Every Time!

National Telesystems, Inc. prides ourselves on award winning customer service and carrying the finest telephone equipment in the industry. We do this by partnering with industry leaders. These include NEC, Panasonic, Samsung, Vodavi, Norstar, Nortel, WIN, Meridian, Avaya, AT&T, Lucent, Prostar, Southwestern Bell, Inter-tel, Nitsuko, TiE, Infinite Systems, XTS, Starmail and Toshiba. National Telesystems has a highly skilled technical sales team that can recommend the best solution for any size of business. We are a dealer who sells, installs, and services systems throughout the Dallas and Fort Worth Texas Metroplex.

Telephone Systems Service in the following cities:

  • 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
  • Grapevine
  • Haltom City
  • Haslet
  • Highland Park
  • Highland Village
  • Hurst
  • Irving
  • Joshua
  • Keller
  • Kennedale
  • Lake Worth
  • Lancaster
  • Las Colinas
  • Lewisville
  • Little Elm
  • Mansfield
  • McKinney
  • Mesquite
  • Mid Cities
  • Midlothian
  • North Dallas
  • North Richland Hills
  • Park Cities
  • Plano
  • Prosper
  • Red Oak
  • Richardson
  • Richland Hills
  • Roanoke
  • Rockwall
  • Rowlett
  • Sachse
  • Seagoville
  • Southlake
  • The Colony
  • Trophy Club
  • University Park
  • Watauga
  • Waxahachie
  • Weatherford
  • Westlake
  • White Settlement
  • Willow Park
  • Wilmer
  • Wylie