This document lists the points of contact for the carriers that provide IP CTS.  (Alphabetical by company.) 

If you do not see your carrier or provider listed, or encounter a problem, you can contact the Relay Services Administrator within your state at Relay Services Points of Contact or the FCC's Consumer & Governmental Affairs Bureau via email at

To update changes in contact or service provider information, please send an email listing the requested changes to so that this page can be updated accordingly. 

  • CaptionMate LLC
    (Conditionally certified for IP CTS) 
    Beryl Bucher, CaptionMate Director 
    CaptionMate LLC
    6131 Preservation Drive 
    Chattanooga, TN 37416  
    Telephone Numbers: Voice: 800-426-3738; Fax: 800-325-8871; TTY Toll-Free: 800-772-2889; TTY Local: 423-629-3466  
  • ClearCaptions, LLC 
    (Conditionally certified for IP CTS) 
    Michael Strecker, Vice President of Regulatory and Strategic Policy 
    ClearCaptions, LLC 
    3001 Lava Ridge Court, Suite 100 
    Roseville, CA 95661 
    Telephone Number: 916-274-8429 

  • Hamilton Relay, Inc. 
    (Conditionally certified for IP CTS) 
    Dixie Ziegler, Vice President of Relay 
    Hamilton Relay, Inc. 
    1006 12th Street 
    Aurora, NE 68818 
    Telephone Numbers: Voice/TTY 402-694-5101; Fax 402-694-5037 
    Website: and 

  • InnoCaption (formerly Miracom USA, Inc.) 
    (Conditionally certified for IP CTS) 
    Cristina Duarte, Regulatory Affairs Manager 
    14111 Robert Paris Court 
    Chantilly, VA, 20151 
    Telephone Number: 703-865-5553 

  • MachineGenius, Inc. 
    (Conditionally certified for IP CTS) 
    Erik Strand 
    MachineGenius Office of Consumer Inquiries 
    838 Washington Street   
    Holliston, MA 01746 
    Telephone Numbers: 800-359-3186; Fax: 508-809-7541 - Attn: Consumer Inquiries 

  • Sorenson Communications, LLC (branded as Sorenson VRS and CaptionCall) 
    (Conditionally certified for VRS and IP CTS) 
    Michael D. Maddix, Director of Government and Regulatory Affairs 
    Sorenson Communications, LLC 
    4192 South Riverboat Road 
    Salt Lake City, UT 84123 
    Telephone Numbers: Voice: 801-287-9461; Fax: 801-287-9401 

Conditional Certification 

Conditional certification means that the Commission has conducted an initial review of a TRS provider’s application and determined that the application facially meets the certification requirement, but the Commission has reserved its right to verify some of the information contained in the application, such as through conducting on-site inspections of the provider’s facilities. 

A conditionally certified TRS provider is able to provide the service described in its application and receive compensation for the TRS Fund for its provision of service, and must otherwise comply with all applicable Commission rules. 

Monday, February 6, 2023