telecommunications device for the deaf

(redirected from Deaf Communications Device)
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tel·e·com·mu·ni·ca·tions de·vice for the deaf

(TDD, TT) (tel'ĕ-kŏ-myū'ni-kā'shŭns dĕ-vīs' def)
Telephone accessory that transmits and receives text over standard telephone lines. Also referred to as teletypewriter (TTY) and text telephone (TT).
See also: assistive listening device
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