The teletypewriter, or TTY, is a device that lets deaf and hearing people type back and forth using regular telephone lines. The teletypewriter has been called by several names, including Telecommunication Device for the Deaf (TDD) or Text Telephone (TT). However, a national organization, Telecommunications for the Deaf, Inc. (TDI), has taken a firm stand and endorses the acronym of "TTY" to represent all text telephones. TDI publishes a national directory and guide to resources that are available to enhance telecommunications accessibility for persons who are deaf, hard of hearing, deaf-blind, and speech impaired. This paper provides tips for using a TTY. These include: (1) equipment needed for a TTY conversation and how much they cost; (2) how to make a TTY call; (3) how to save time when making a TTY call; (4) TTY etiquette; and (5) tips for educators.