The TTY relay service communication assistant (CA) connects TTY relay calls with people who communicate by telephone. The CA converts voice-to-text and text-to-voice communication. The text is displayed on the user’s TTY.

TTY-based Telecommunications Relay Services permit persons with a hearing or speech disability to use the telephone system via a text telephone (TTY) or other device to call persons with or without such disabilities.

In the US and Canada, the devices are referred to as TTYs. Teletype Corporation, of Skokie, Illinois, made page printers for text, notably for news wire services and telegrams, but these used standards different from those for deaf communication, and although in quite widespread use, were technically incompatible.

A teleprinter (teletypewriter, teletype or TTY) is an electromechanical device that can be used to send and receive typed messages through various communications channels, in both point-to-point and point-to-multipoint configurations.

A TTY is basically the same thing as a TDD. The phrase TTY (or Teletype device) is how the deaf community used to refer to the extremely large machines they used to type messages back and forth over the phone lines. A TDD operates in a similar way, but …

TTY-based TRS allows a TTY user and a voice caller to connected using a communication assistant (CA). The CA relays the call between the parties by speaking what a text user types, and typing what a voice telephone user speaks.

A TTY is a telephone-typewriter hybrid that transmits text-based messages to another TTY over the telephone network. Conversely, the other party may call the person with a disability by dialing a toll-free number (1-800-855-0511) to reach a TTY relay operator.

Apr 9, 2008 · What is a TTY (text telephone/TDD)? Looking much like a typewriter keypad with a text screen, a TTY allows an individual who is deaf, hard-of-hearing or has a speech difficulty to make and receive telephone calls. The conversation is read on a lighted display screen and/or a paper printout on the TTY.

If you don’t have a TTY unit or TDD, you can use a telephone relay service to communicate by phone with someone who is deaf or hard of hearing. Telephone relay services are required by the Americans with Disabilities Act, with services in English and Spanish, and regulated by the FCC.

Jun 30, 1998 · TTY refers to the TeleTypewriter, used for telegram and military communications. When a smaller unit came out, it was decided to label this class of equipment as Telecommunications Device for the Deaf, or TDD.