![]() The other person’s response will display on your Teletype machine’s text display. The TTY device on the other end of the conversation will decode the message for display. As you type, the message is sent over the phone line just like your voice would be sent over the phone line if you talked. Once you are connected to your party, type the message you want to send on the TTY device’s keyboard. To find a TTY-compatible digital wireless phone, contact your wireless service provider or handset retailer. Some TTY models can be plugged directly into a phone line, and some are usable with cordless and/or portable phones using 2.5mm jacks.Ĭonsumers are now generally able to use TTY devices to complete calls with their digital wireless phones, including 911 calls, if the phone itself is TTY-compatible. The telephone handset is placed onto special acoustic cups on the TTY device, the mouthpiece into one cup and the earpiece into another. It is normally required for the party on each end of a conversation to have a TTY device using a similar communication protocol, such as standard wired telephone service. Many have small spools of paper and printers incorporated into the device, so that the conversation text can be printed. They generally include a standard keyboard and a small screen that uses LEDs or an LCD display screen to show typed text electronically. Teletype machines are about the size of small laptop computers. TTYs are required at both ends of the conversation. They type messages back and forth to one another instead of talking and listening. This allows people who are deaf, hard of hearing or speech-impaired to use the telephone to communicate with those who hear and speak without issues, or with other hearing-impaired individuals. TTY devices are special electronic machines that transmit conversations as text over telephone lines. Other names include textphone (common in Europe), and minicom (United Kingdom). ![]() Today we prefer to describe the TTY device, rather than those who use it. This stands for Telecommunications Device for the Deaf. On occasion the acronym TDD may appear for the same device. One of the most commonly used accommodations by people who are unable to understand speech on the telephone, or unable to speak themselves, TTY devices (teletype machines) use text instead of voice for parties to communicate via telephone lines.
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