(713) 682-4000 sales@westecservices.net

ESI Telephone Systems

ESI Telephone Systems - Houston, Sugar Land, Spring

If you are looking for a more traditional phone system that is PBX based, ESI is the one to choose. ESI provides a variety of systems for businesses needing as few as 5 handsets to one that needs hundreds.


ESI is a privately held corporation with headquarters in Plano, Texas, just outside Dallas. Rapid growth, stable management, and innovative technology have characterized ESI since its founding in 1987.

ESI designs and manufactures high-efficiency, low-cost business communications products. These products have earned numerous product awards from industry publications.


ESI Telephone Systems - Houston, Sugar Land, Spring

ESI develops business communications products targeted to businesses of various sizes (with an emphasis on small- and medium-sized businesses).

As an original equipment manufacturer (OEM), ESI has built private-label versions of its products for some of the world’s leading brands in telecommunications, including Comdial, Samsung, Executone, and Code-a-Phone.

ESI products are used by major companies such as:

  • Coca-Cola
  • Hertz
  • Chase Manhattan Bank
  • Best Buy
  • Holiday Inn
  • Century 21 Realtors
  • Blockbuster Video
  • Fleet Bank
  • Office Depot
  • Hampton Inn
  • Advantage Rent-a-Car
  • Farm Bureau Insurance

Additionally, ESI products have been installed in over 200 nationwide offices of one of the largest agencies in the United States government.

Company strengths


  • Is committed to developing leading-edge products that deliver advanced features and ease of use.
  • Maintains a proactive posture and market flexibility to take advantage of rapidly changing communications technology. As an industry leader in voice processing and storage techniques, ESI is well-positioned for future innovations. In addition, the company’s sustained, long-term growth provides the stability and resources to assure superior customer support.
  • Maintains high ethical standards, produces high-quality products and promotes a healthy work environment. Each employee takes pride in the company’s growth and success. ESI also participates in a variety of community involvement projects

Product strengths

ESI builds products that are easy to install, easy to understand and simple to use.

All ESI products are designed with combined proprietary hardware and software platforms. ESI proudly designs and engineers its systems’ hardware and software in the United States. Software is created and maintained by senior-level ESI engineers and developers.

ESI Communications Servers are all-in-one business communications systems that deliver advanced operating performance through seamless feature integration. They’re the “smartest” phones on the market, much less in their respective price ranges.

Mission: WesTec will be a “turn-key” solution for all of its clients’ business connectivity needs. It will offer efficient and effective solutions, directly and with strategic partners, that create tangible value for its clients at every point of contact. Westec will serve all people and entities with a servant’s heart.

Get in touch

2916 West TC Jester Blvd., Suite 104

Houston, TX 77018

(713) 682-4000


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