Nera WILINK I System Manual page 212

NAT
Network Address Translation. Basic Network Address Translation (Basic
NAT) is a method by which IP addresses are mapped from one group to
another, transparent to end users. Network Address Port Translation, or
NAPT is a method by which many network addresses and their TCP/UDP
ports are translated into a single network address and its TCP/UDP ports.
Together, these two operations, referred to as traditional NAT, provide a
mechanism to connect a realm with private addresses to an external realm
with globally unique registered addresses.
NIC Network Interface Card. An expansion board you insert into a computer (or
a built-in component) that enables the computer to connect to a network.
Most NICs are designed for a particular type of network, protocol, and
media, although some can serve multiple networks.
NIU Network Interface Unit
NLOS Non Line Of Sight. A term referring to wireless services which don't require
a clear open path between sites.
NMS Network Management System. A system responsible for managing at least
part of a network. An NMS is generally a reasonably powerful and well-
equipped computer, such as an engineering workstation. NMSs
communicate with agents to help keep track of network statistics and
resources.
NOC Network Operations Center. The physical space from which a typically large
telecommunications network is managed, monitored and supervised.
NPU Network Processing Unit
NRT Non Real Time. is very similar to the Real-Time polling service except that
connections may utilize random access transmit opportunities for sending
bandwidth requests. These Non Real Time Variable Bit Rate (NRT-VBR)
services, such as file transfer and Internet access with a minimum
guaranteed rate, are characterized by requirement for a guaranteed rate,
but can tolerate longer delays and are rather insensitive to jitter. Service
parameters include CIR, Committed Time (CT), and MIR that limit the rate
as otherwise bandwidth intensive services may expand to occupy full
bandwidth.
Operation, Administration & Maintenance. Provides the facilities and the
OA&M
personnel required to manage a network.
ODU Outdoor Unit
WILINK I MODULAR BASE STATION SYSTEM MANUAL
Glossary
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