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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).
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.
UTRA-TDD (Time Division Duplex), on the other hand, combines CDMA with TDMA and TDD. In this scheme, the same frequency band is used for both uplink and downlink, but at different times. This time-based separation is particularly advantageous in scenarios with asymmetric traffic loads, where the data rates for uplink and downlink differ ...
Real-time text is frequently used by the deaf, including IP-Relay services, TDD/TTY devices, and Text over IP.Real-time text allows the other person to read immediately, without waiting for the sender to finish composing his or her sentence/message.
Learn how to get help for AOL via TTY. AOL APP. News / Email / Weather / Video. GET. Mail. Mail. Help. Contact Us; AOL Plans; ... contact our TTY phone number at 1 ...
The phrase TDD is not considered politically correct in the United States. This is because users with cognitive language impariments, among others, use the TTY devices as well. The article should be modified to use the phrases "TTY/TDD" and "Text Telephone" as a replacement for "TDD" and "Telecommunications device for the deaf" respectively.
3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.
The relation between local and global truncation errors is slightly different from in the simpler setting of one-step methods. For linear multistep methods, an additional concept called zero-stability is needed to explain the relation between local and global truncation errors. Linear multistep methods that satisfy the condition of zero ...