|Part of the Access Network, (owned by the carrier or the subscriber) located on the side of the subscriber's home. The following are functions of the Network Termination: coupling of home wiring to the carrier wiring, grounding, RF filtering, splitting, media conversion, remodulation, security and interdiction, provisioning, loopback testing by the carrier.
Network Time Protocol (NTP)
An internet standard used for synchronizing clocks of elements distributed on an IP network.
New Entrant Carrier (NEC)
This term is generally applied to new providers of competitive local exchange telephone services.
National Fire Protection Association; publisher of the National Electrical Code®, and 300 other codes and standards through a full, open-consensus process.
Next Generation Network Architecture
Network Interface Card
Network Interface Device
Network Interface Unit
North American ISDN Users Forum
Nanometer (10-9 meters).
Network Operations Center
(1) An addressable unit in a network, which can be a computer, workstation or some type of communications control unit. (2) Point in a cable television system that interconnects traditional coaxial cable and fiber-optics. The place where an optical signal is converted to a radio frequency (RF) signal, or vice versa.
Node + X
Node plus an integer number “X” describes an HFC network architecture with an optical node driving from zero (“Node + 0”) to three (3) or higher integer number coaxial transmission line RF amplifiers (trunk/bridger and/or line extenders (LEs)). The following illustration shows the evolution of cable industry HFC networks from very high transmission line RF amplifier count past the optical node, to, finally, elimination of all RF amplifiers in the transmission line between headend/hub and subscriber (i.e., an all fiber optic network):
Above Graphic courtesy of Cable Next-Gen Broadband Strategies session “Taking Fiber to the X”, 24 February 2011