You can use a TeleBraille device or TTY with a large visual display to make relay calls. This service allows you to read the phone conversation in braille or in a large font size at a 15 WPM transmission speed. If desired, you may specify a different WPM transmission speed to the relay operator.
The communications assistant reads aloud the message you typed to the other party, and then types what the other party says to you.
This service is designed for people who are DeafBlind or Deaf with Low Vision.