TTY stands for Text Telephone. It is also sometimes called a TDD, or Telecommunication
Device for the Deaf. TTY is the more widely accepted term, however, as
TTYs are used by many people, not just people who are deaf.
A TTY is a special device that lets people who are deaf, hard of hearing,
or speech-impaired use the telephone to communicate, by allowing them to
type messages back and forth to one another instead of talking and listening.
A TTY is required at both ends of the conversation in order to communicate.
To use a TTY, you set a telephone handset onto special acoustic cups built
into the TTY (some TTY models can be plugged directly into a telephone
line). Then, type the message you want to send on the TTY's keyboard. As
you type, the message is sent over the phone line, just like your voice
would be sent over the phone line if you talked. You can read the other
person's response on the TTY's text display.
you don't have a TTY, you can still call a person who is deaf, hard of
hearing, or speech-impaired by using the Telecommunications Relay Service
(TRS). With TRS, a special operator types whatever you say so that the
person you are calling can read your words on his or her TTY display. He
or she will type back a response, which the TRS operator will read aloud
for you to hear over the phone. Toll free TRS services are available 24
hours a day, 365 days a year.
You can visit the Ultratec website for
information about a wide range of TTYs for home, office and personal use.
Or, visit these great online stores for all your assistive device needs.