| | | | | | | | | | | | | | | | | | | | A "text telephone" modified phone system where a hearing-impaired user can type messages to another person and read responses on a small screen. Also commonly referred to as "TDD" (telecommunication device). A "read only" conversation can exist between two people who each use TTY equipment. Otherwise, a non-hearing impaired caller can use a relay service where a special operator acts as a go-between to translate the speaker's words into text and text print into voice communication. |
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Page last updated: Wednesday, April 18, 2007 04:24 pm