CapTel 840i

A landline telephone connection and Internet service are required for this model.  The captioning service uses the Internet connection to display captions. 

CapTel 840i Phone Features

  • FREE live captioning service

  • WiFi-compatible

  • Caller ID capable

  • Screen with easy-to-read captions with adjustable font sizes and colors

  • Built-in answering machine takes voice messages with captions

  • Speed dial keys for one-touch dialing of frequently called numbers

  • Stores up to 95 names/phone numbers in built-in phone book

  • Adjustable volume control up to 40dB

  • One-touch blue button to call Customer Service

  • Available in English and Spanish

Requirements for CapTel 840i

Connection #1:

Any one of these telephone connections:

  • Analog telephone line

  • DSL with digital filter

  • PBX system with analog port

Connection #2 or #3:

  • #2 High-speed Internet via Ethernet line



  • #3 WiFi connection

For outgoing calls, simply dial the other party directly.

For incoming calls, the other party dials your number directly. 

VIDEO: Overview of CapTel 840i model

Angie Officer
Sr. Program Manager
Tennessee Relay Service
Mailstop: VARESF0213
12524 Sunrise Valley Drive Reston, VA 20196

© 2020

Tennessee Relay Service is provided
by Tennessee Regulatory Authority

SPRINT CAPTEL: FEDERAL LAW PROHIBITS ANYONE BUT REGISTERED USERS WITH HEARING LOSS FROM USING INTERNET PROTOCOL (IP) CAPTIONED TELEPHONES WITH THE CAPTIONS TURNED ON. IP Captioned Telephone Service may use a live operator. The operator generates captions of what the other party to the call says. These captions are then sent to your phone. There is a cost for each minute of captions generated, paid from a federally administered fund. No cost is passed on to the CapTel user for using the service.  

Individuals with hearing loss must complete & submit a Third-Party Certification of Eligibility signed by hearing health professional to be eligible for no-cost Internet-based CapTel phone. Although CapTel can be used for emergency calling, such emergency calling may not function the same as traditional 911/E911 svc. By using CapTel for emergency calling you agree that Sprint is not responsible for any damages resulting from errors, defects, malfunctions, interruptions or failures in accessing or attempting to access emergency svc. through CapTel whether caused by the negligence of Sprint or otherwise. 

©2020 Tennessee Relay Service is provided by Tennessee Regulatory Authority. CapTel is a registered trademark of Ultratec, Inc.