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| TTY Phones are Teletypewriter Telephones. These phones are devices which allow people who are deaf – or very hard of hearing – to communicate through telephone lines. TTY Phones typically consist of a keyboard that sends a character code for each key stroke and a printer that prints letters and characters as their codes are received. TDD Phones (Telecommunications Devise for the Deaf) are used widely by deaf individuals. They supply text communication over telephone lines. The text is typically displayed on a digital display on the phone. |
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