S - Definitions

  • S

    network switch

    In a network, a switch is a device that channels incoming data from any of multiple input ports to the specific output port that will take it toward its intended destination.

  • S interface

    In Integrated Services Digital Network (ISDN) service, an S interface is the electrical interface between a network terminating unit 1 (NT and up to eight addressable devices such as a computer or a telephone.

  • satellite Internet connection

    A satellite Internet connection is an arrangement in which the upstream (outgoing) and the downstream (incoming) data are sent from, and arrive at, a computer through a satellite.

  • satellite news gathering (SNG)

    Satellite news gathering (SNG) is the use of mobile communications equipment for the purpose of worldwide newscasting.

  • satellite return Internet connection

    A satellite return Internet connection is an arrangement in which incoming data arrives at your computer from a satellite downlink and outgoing data (such as your request for the next Web page) is sent over a regular telephone line.

  • SCART connector

    A SCART connector is a physical and electrical interconnection between two pieces of audio-visual equipment, such as a television set and a video cassette recorder (VCR).

  • SCTP (Stream Control Transmission Protocol)

    SCTP (Stream Control Transmission Protocol) is a protocol for transmitting multiple streams of data at the same time between two end points that have established a connection in a network.

  • SD-branch

    SD-branch is a single, automated, centrally managed hardware platform and framework that supports SD-WAN, routing, integrated security and LAN/Wi-Fi functions.

  • SD-WAN (software-defined WAN)

    Software-defined WAN (SD-WAN) is a technology to distribute network traffic across wide area networks (WAN) that uses software-defined networking (SDN) concepts to automatically determine the most effective way to route traffic to and from branch offices and data center sites.

  • SDH (Synchronous Digital Hierarchy)

    SDH (Synchronous Digital Hierarchy) is a standard technology for synchronous data transmission on optical media.

  • SDLC (Synchronous Data Link Control)

    (SDLC is also an abbreviation for systems development life cycle.

  • SDN application (software-defined networking application)

    An SDN application is a software program designed to perform a task in a software-defined networking (SDN) environment. SDN applications can replace and expand upon functions that are implemented through firmware in hardware devices in a conventional networking environment.

  • SDN controller (software-defined networking controller)

    An SDN controller is an application in software-defined networking (SDN) that manages flow control to enable intelligent networking. SDN controllers are based on protocols, such as OpenFlow, that allow servers to tell switches where to send packets.

  • SDN overlay (software defined networking overlay)

    An SDN overlay is a deployment method for network virtualization and software-defined networking (SDN) that involves running a logically separate network or network component on top of existing infrastructure.

  • Seebeck effect

    The Seebeck effect describes the generation of electricity following the connection of two dissimilar electrical conductors or semiconductors that illustrates the thermoelectric effect. 

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