A teleprinter 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.

How do Teletypewriters work?

A teletypewriter (TTY; also called a teletype or teleprinter) is a device that sends a typed message to another place. A teletypewriter has a typewriter keyboard, a local printer (so the user can see what has been typed) and a transmitter. Messages can be sent over wires or radio waves.

What is a teletypewriter system?

TTY (Teletypewriter) is a device that allows users to send typed messages across phone lines. Many people who are Deaf, deafened, hard of hearing, or who are deafblind may use TTYs to call other individuals.