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EXFO Glossary

N (browse from .......... to)
N_Port...............Network SimulatorNetwork Switching Subsystem (NSS)...............NSSNTE...............N-Way
N_PortNDFNetwork Interface Card (NIC)
NarrowbandNENetwork Interface Device (NID)
NASSNear-End Crosstalk (NEXT)Network monitoring
National Institute of Standards and Technology (NIST)NEFNetwork Operations Center (NOC)
NBNEMNetwork Service Provider (NSP)
NCITSNetwork Element (NE)Network Simulator
NCSNetwork Functions Virtualization (NFV)
from N_Port... to Network Simulator


Acronym for: Node or Fibre Channel port


A designation of bandwidth less than 56 kbit/s.


Acronym for: Network attachment subsystem

National Institute of Standards and Technology (NIST)

A measurement standards laboratory, otherwise known as a National Metrological Institute (NMI), which is an non-regulatory agency that promote U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve quality of life.


Acronym for: Narrow band


Acronym for: National Committee for Information Technology Standards (pronounced "insights")


Acronym for: Network call signaling


Acronym for: New data flag

Near-End Crosstalk (NEXT)

The interference between pairs of lines at the telephone switch end (central office).


Acronym for: Network element function


Acronym for: Network equipment manufacturer

Network Element (NE)

A manageable logical entity uniting one or more physical devices. This allows distributed devices to be managed in a unified way using one management system.

Network Functions Virtualization (NFV)

NFV is the implementation of network functions in software that can run on a range of generic server hardware, and that can be instantiated in various locations in the network, without the need for installation of new equipment.

Network Interface Card (NIC)

A circuit board installed in a computing device to connect it to a network. The NIC performs the hardware functions that are required to provide a computing device with physical communication capabilities. Also known as an adapter.

Network Interface Device (NID)

A device that serves as the demarcation point between the carrier's local loop and the customer's premises wiring. Also known as a Network Interface Unit (NIU).

Network monitoring

Network monitoring is the use of a system that constantly monitors a communication network for slow or failing network elements or services and that notifies the network administrator in case of outages.

Network Operations Center (NOC)

One or more locations from which network monitoring and control is exercised over a computer, telecommunication or satellite network.

Network Service Provider (NSP)

A business or organization that sells bandwidth or network access by providing direct backbone access to the Internet and usually access to its network access points.

Network Simulator

A piece of software or hardware that predicts the behavior of a network by simulating devices, traffic, etc., customizing performance to meet specific analysis needs and supporting the most popular protocols in use today, such as WLAN, Wi-Max, UDP, and TCP.