An assistive technology typically used by people who are deaf or cannot speak for purposes of communicating via the phone. TTYs typically have a keyboard and a two-line display with ringing function via flashing lights. TTYs allow users to type messages over the phone lines to other TTY users. Users can acoustically couple the TTY to the phone or the TTY can connect directly to an IP network via an FXS port. Also sometimes called a TDD, or Telecommunication Device for the Deaf.
a device that allows text communication over standard telephone equipment. Additional information.
Formerly TDD of TTY a text telephone is a telecommunications device used by those who cannot understand on the phone. A typewriter-like unit shows the conversation on a screen so that it can be read. A text telephone must "talk" with another text telephone or a computer.
A machine that employs graphic communication in the transmission of coded signals through a wire or radio communications system. It is sometimes called a Telecommunications Device for the Deaf (TDD).
(TTY). Machinery or equipment that employs interactive text based communications through the transmission of coded signals across the standard telephone network. Text telephones can include, for example, devices known as TDDs (telecommunication display devices or telecommunication devices for deaf persons) or computers with special modems. Text telephones are also called TTYs, an abbreviation for tele-typewriter.
Machinery or equipment that employs interactive graphic (i.e., typed) communications through the transmission of coded signals across the standard telephone network. Text telephones can include, for example, devices known as TDD's (telecommunication display devices or telecommunication devices for deaf persons) or computers. 3.5.63
