Voiceriver is an engineering-centric company focused on building telecom solutions that seamlessly integrate accessibility functionality. 

Our expertise includes solutions and design innovations in text and voice communication systems.


Corporate History

Voiceriver was founded in 2004 with the vision of creating state-of-the-art accessibility solutions in an industry that mostly ignored the need for accessibility.  Assembling a technical development team with years of experience in creating carrier-grade applications for text and voice communications, we set our course to make a difference in the lives of those who had accessibility needs.  

One of our first efforts was teaming with a large telecom company to successfully create a new hardware and software platform to refresh for their aging Text Relay Service (TRS).  From that point till now, Voiceriver has been constantly developing and innovating technologies for text and audio system solutions that meet real world accessibility and communication needs.  

Voiceriver sells accessibility products as well as provides custom engineering for accessibility withing the telecommunication industry.  Voiceriver's successful history includes:

  • Development of hardware & software systems for multiple TRS providers.
  • Development of custom corporate telecom applications.
  • Design and development of custom VoIP accessibility applications.
  • Contract development of a VoIP TTY product.
  • Creation of modem algorithms for Baudot, Turbocode®, and E-Turbocode™ communications.
  • Consulting and tuning for Baudot, Turbocode®, and E-Turbocode™ methodologies. 
  • With a rich heritage of reliability and our technical expertise in accessibility communications, we're interested in showing how our text gateway and text-to-911 accessibility technologies work in 9-1-1 and Next Generation 9-1-1 PSAPs.  

    Leadership Team

    Voiceriver is led by a team of professionals who are dedicated to making accessibility an integral part of modern communication systems.

    Jeff Knighton - President & CEO

    Mr. Knighton has been involved in developing accessible telephony solutions since 1997.  Prior to founding Voiceriver in 2004, he was CTO at NXi Communications, then a leader in computer-based TTY systems.  His skills blend the lines between visionary and implementer, with an eye for efficiency and elegance.  Jeff's passion for innovation led to the creation of the first web-browser to TTY communication system which later evolved into the "IP Relay" industry, enabling Deaf individuals access to Relay operators over the Internet.  He is a graduate of Brigham Young University with a B.S. in Electrical Engineering.

    Steven Cartwright - CFO

    Mr. Cartwright is a veteran IT executive with experience in the financial services and telecommunication industries.  He has an extensive business background balanced with a strong understanding of technology.  On the business side he has been involved with regulatory compliance and is an audit expert.  On the technology side he has extensive experience in managing technology initiatives and programs.   Steven has a Bachelor of Science in Business Administration from Bellevue University and a MBA from the University of Nebraska.  He has also earned several post graduate professional certifications.

    Chad Sumsion - Director, Project Management / Test Engineering

    Mr. Sumsion has over 25 years experience developing and managing products in the high tech industry.  With an eye for detail, he has the talent of bringing out the best in people and products.  Before joining Voiceriver in 2004, his career path included the companies of FMC, Evans & Sutherland, Cimetrix, Sorenson, and NXi Communications.  Chad's experience as a contributor is in electronic design automation, real-time image generation, robotic control, real-time video compression, and text / video communication systems.  He holds a Bachelors of Science degree in Electrical Engineering from Brigham Young University.