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Cuda 12000 IP Access Switch CLI-based Administration Guide
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National Cable
Television
Association (NCTA)
A voluntary association of cable television operators which, among other
things, provides guidance on measurements and objectives for cable
television systems in the United States.
National Television
Systems
Committee (NTSC)
A committee which developed a set of standard protocol for television
broadcast transmission and reception in the United States.
NCTA See National Cable Television Association.
NEBS See Network Equipment Building Systems.
Network
Equipment
Building Systems
(NEBS)
NEBS is a Telcordia standard defining the physical, electrical, and
environmental conditions under which network equipment must operate.
NEBS includes: temperature, humidity, airborne contamination, fire
resistance, earthquake and vibration, noise, electrical safety, lightning and
surge immunity, ESD immunity, and electro-magnetic compatibility.
Network Layer Layer 3 in the Open System Interconnection (OSI) architecture; the layer that
establishes a path between open systems.
NS Record that contains the domain name of the authoritative name server for
the domain.
NTSC See National Television Systems Committee.
Open Systems
Interconnection
(OSI)
A framework of ISO standards for communication between different systems
made by different vendors, in which the communications process is
organized into seven different categories that are placed in a layered
sequence based on their relationship to the user. Each layer uses the layer
immediately below it and provides a service to the layer above. Layers 7
through 4 deal with end-to-end communication between the message
source and destination, and layers 3 through 1 deal with network functions.
Open Shortest
Path First (OSPF)
An Interior Gateway Routing Protocol that use link-state algorithms to send
routing information to all nodes in an OSPF area by calculating the shortest
path to each node based on a map of the network constructed by each
node. Each router sends that portion of the routing table (keeps track of
routes to particular network destinations) that describes the state of its own
links, and it also sends the complete routing structure of the network.
OSI See Open Systems Interconnection.