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    OFDMA (orthogonal frequency-division multiple access)

    Orthogonal frequency-division multiple access (OFDMA) is a technology of Wi-Fi 6 (802.11ax) that lets access points serve multiple clients at the same time.

  • Open Shortest Path First (OSPF)

    Open Shortest Path First, often shortened to OSPF, is an IP routing protocol used to find the best path to distribute packets as they pass through IP networks.

  • operational support system (OSS)

    An operational support system (OSS) is a set of programs that helps a communications service provider monitor, control, analyze and manage a telephone or computer network.

  • optoisolator (optical coupler or optocoupler)

    An optoisolator (also known as an optical coupler, photocoupler, optocoupler) is a semiconductor device that transfers an electrical signal between isolated circuits using light.

  • orthogonal frequency-division multiplexing (OFDM)

    Orthogonal frequency-division multiplexing (OFDM) is a method of data transmission where a single information stream is split among several closely spaced narrowband subchannel frequencies instead of a single wideband channel frequency.

  • OSGi (Open Service Gateway Initiative)

    The OSGi (Open Service Gateway Initiative) specification is a Java framework for developing and deploying modular software programs and libraries.

  • overlay network

    An overlay network is a virtual or logical network that is created on top of an existing physical network.

  • What is ONOS (Open Network Operating System)?

    ONOS (Open Network Operating System) is an OS designed to help network service providers build carrier-grade software-defined networks architected for high scalability, availability and performance.

  • What is open networking?

    Open networking describes a network that uses open standards and commodity hardware.

  • What is the OSI model? The 7 layers of OSI explained

    The OSI model (Open Systems Interconnection model) is a multilayered reference model that shows how computer systems and applications communicate over a network.