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Once the most common type of TRS call, TTY calls involve a call from a deaf or hard-of-hearing person who utilizes a TTY to a hearing person. In this type of call, typed messages are relayed as voice messages by a TRS operator, [1] (also known as Communication Assistant (CA), [2] Relay Operator (RO), [3] Relay Assistant (RA), [4] or relay agent (agent)), and vice versa.
A telecommunications device for the deaf (TDD) is a teleprinter, an electronic device for text communication over a telephone line, that is designed for use by persons with hearing or speech difficulties. Other names for the device include teletypewriter (TTY), textphone (common in Europe), and minicom (United Kingdom).
It is also considered as a long-term replacement for the use of TDD/TTY devices for the deaf, currently in use with 911. TDD/TTY devices are considered legacy systems, and may be replaced by other real-time text technologies that transmit text as it is being typed. In Europe, real-time text is used in Reach 112 emergency service trials.
Each TDD has a keyboard with a text screen. A user either needs to connect with another person that has a TDD or use a relay service that can convert the text into voice for the hearing listener receiving the call. With the improvements in technology for phones, pagers, text devices and computer services, the use of the TDD has declined. [3]
In the 1990s and 2000s, this included encouraging pay telephone providers to incorporate TTY keyboards into pay telephones. [ 1 ] [ 2 ] The organization's advocacy efforts include lobbying the Federal Communications Commission for better and more intuitive caption display settings on a variety of devices and services.
Verizon said its network is fully restored, returning mobile phone service to customers across the country after an outage on Monday that left many people unable to make or receive calls for much ...