![]() Unfortunately using a home phone or cell phone that enabled the hearing impaired to communicate was not an option until recently. ![]() Newer text based communication methods, such as short message service (SMS), Internet relay chat (IRC), and instant messaging have also been adopted by the deaf as an alternative or adjunct to TDD. A new development called the captioned telephone, now utilizes voice recognition. ![]() The typical TDD is a device about the size of a small laptop computer with a QWERTY keyboard and small screen that uses LEDs or an LCD screen to display typed text electronically. ![]()
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