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  2. Telecommunications relay service - Wikipedia

    en.wikipedia.org/wiki/Telecommunications_relay...

    A telecommunications relay service, also known as TRS, relay service, or IP-relay, or Web-based relay service, is an operator service that allows people who are deaf, hard of hearing, deafblind, or have a speech disorder to place calls to standard telephone users via a keyboard or assistive device. Originally, relay services were designed to be ...

  3. Video relay service - Wikipedia

    en.wikipedia.org/wiki/Video_Relay_Service

    A video relay service ( VRS ), also sometimes known as a video interpreting service ( VIS ), is a video telecommunication service that allows deaf, hard-of-hearing, and speech-impaired (D-HOH-SI) individuals to communicate over video telephones and similar technologies with hearing people in real-time, via a sign language interpreter .

  4. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    Telephone exchange. A telephone operator manually connecting calls with cord pairs at a telephone switchboard. A modern central office, equipped with voice communication and broadband data capabilities. A telephone exchange, also known as a telephone switch or central office, is a crucial component in the public switched telephone network (PSTN ...

  5. Telecommunications device for the deaf - Wikipedia

    en.wikipedia.org/wiki/Telecommunications_device...

    TRS relay. One of the most common uses for a TTY is to place calls to a Telecommunications Relay Service (TRS), which makes it possible for the deaf to successfully make phone calls to users of regular phone systems. The voice recognition systems are in limited use, due to problems with the technology.

  6. Point-to-point (telecommunications) - Wikipedia

    en.wikipedia.org/wiki/Point-to-point...

    In telecommunications, a point-to-point connection refers to a communications connection between two communication endpoints or nodes. An example is a telephone call, in which one telephone is connected with one other, and what is said by one caller can only be heard by the other. This is contrasted with a point-to-multipoint or broadcast ...

  7. Get Support-AOL Help

    help.aol.com/contact

    Give Us Call. For Verizon Support. 1-800-VERIZON. Español del cliente y ayuda técnica: 1-866-885-5117. AOL TTY service for the deaf or hard-of-hearing: 1-800-759-3323 (Must have TTY-enabled equipment) Contact AOL Page details: Hours of Operations: Billing/Account Support, Mon-Fri: 8am-1am EST; Technical Support, 24 x 7.

  8. Relay network - Wikipedia

    en.wikipedia.org/wiki/Relay_network

    A relay network is a broad class of network topology commonly used in wireless networks, where the source and destination are interconnected by means of some nodes.In such a network the source and destination cannot communicate to each other directly because the distance between the source and destination is greater than the transmission range of both of them, hence the need for intermediate ...

  9. Session Initiation Protocol - Wikipedia

    en.wikipedia.org/wiki/Session_Initiation_Protocol

    The Session Initiation Protocol ( SIP) is a signaling protocol used for initiating, maintaining, and terminating communication sessions that include voice, video and messaging applications. [1] SIP is used in Internet telephony, in private IP telephone systems, as well as mobile phone calling over LTE ( VoLTE ). [2]

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