• • • Deafness. • • • Deaf-blindness. • • • Speech impairment - severe.

Text send (keyboard) is a facility required by the deaf, the deafblind and those with a severe speech impairment. It must be accompanied by a facility to display the incoming text (and network messages).

The facilities may be combined in a dedicated terminal (a Textphone), added to a public payphone or (especially for the deafblind) associated with a personal computer.

The keyboard should have a standard layout and not limit the speed for a good typist.