This is a very difficult and inefficient way to provide service. While the relay operators are trained to echo the message verbatim, there is still the chance of losing keywords. This process is also very time-consuming. A TTY should be installed at your reference desk and in your public phone area. Basically, a TTY is a special device that is used by a hearing impaired person, deaf user, or a speech impaired individual to type a message to either an impaired or nonimpaired user.
Users are able to send their sentences as quickly as a person speaking on a conventional phone.
Tomorrow You will note that many of the abbreviations are the same as the ones used to quickly dash off e-mail messages. Popular TTYs for Business Use Krown Manufacturing Krown Manufacturing was one of the very first companies to manufacture TDDs and is one of the industry leaders. The display is 20 characters in length. The Memory Printers series offers the same features as the Portaviews with the added advantage of having the capability of storing messages and phone numbers in the memory. This naturally expands the possibility of communication and information exchange.