TTY Defined
TTY is the abbreviation for the Text Telephone, a device commonly used by deaf, hearing impaired, or speech impaired people for communication. TTY devices feature a small screen that show what both parties have typed.
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Printing TTYs
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Printing TTYs use rolls of paper similar to smaller fax machines. Conversations can be printed, but need not be printed every time. Several styles are available. Most feature full-size keyboards, memory, redial, caller ID, and call-waiting.
Public TTYs
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TTY devices can commonly be found in public places such as shopping malls or airports. The TTY devices are normally attached to the phone booth, and are advertised throughout the location with signage.
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Portable TTYs
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The portable TTY device allows for accessibility from any type of telephone. It's compact and is intended to easily fit in a purse or briefcase. Features include a rechargeable battery and memory card, which stores phone numbers and conversations.
Cost
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Other than the cost of the actual TTY machine, there are no costs associated with making a TTY phone call. Fees are charged to TTY users only when a relay service is used.
Telecommunications Relay Service
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Telecommunications Relay Service (TRS) is a way for TTY and non-TTY users to communicate. The TRS types everything that is spoken, and tells the listener what the TTY user has typed. Associated fees are charged by the TRS service to the TTY user.
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