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单词 tdd/tty
释义 DictionarySeeTDD

TDD/TTY


TDD/TTY

(Telecommunications Device for the Deaf/TeleTYpewriter) A user terminal with keyboard and printer or keyboard and screen used by the hearing and speech impaired. Introduced in 1964, the device contains a modem and is used over a standard analog phone line. If a recipient does not have a corresponding terminal device, TDD/TTY users dial a relay service composed of operators who receive the typed messages, call the recipients and speak the messages to them. The operators also type the responses back to the TDD/TTY user. See VRS.

TDD/TTY


TDD/TTY

(Telecommunications Device for the Deaf/TeleTYpewriter) A user terminal with keyboard and printer or keyboard and screen used by the hearing and speech impaired. Introduced in 1964, the device contains a modem and is used over a standard analog phone line. If a recipient does not have a corresponding terminal device, TDD/TTY users dial a relay service composed of operators who receive the typed messages, call the recipients and speak the messages to them. The operators also type the responses back to the TDD/TTY user. See VRS.
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更新时间:2024/12/23 10:38:08