User Manual

Navini Networks, Inc. Base Station User Manual
Term Stands For.... Meaning
NMS
N
etwork Management Syste
m
A product that helps manage a network generally hosted on a
well-equipped computer such as an engineering workstation. The
system tracks network statistics and resources.
NOC
N
etwork Operations Cente
r
A centralized point, much like a traffic control tower, where
technicians or engineers can monitor network activity, alarms,
and statistics, as well as make network configuration and other
changes dynamically. For Internet, the NOC is often a hub for
ISP services.
OAM
Operation, Administration,
Maintenance
A set of network management functions. Also describes the
human-machine interface tasks - i.e., to operate the system, to
administer the system, and to maintain the system.
OS
Operating System A software program that manages the basic operation of a
computer. Most Operating Systems are either based on
OSI
Open Systems Interconnection An ISO model for worldwide communications that defines 7
layers of network protocol: L1 Physical Layer; L2 Data Link
Layer; L3 Network Layer; L4 Transport Layer; L5 Session
Layer; L6 Presentation Layer; L7 Application Layer.
PC
Personal Computer Any IBM-compatible computer, so named because IBM’s first
commercial end user computer was called a PC.
PCB
Printed Circuit Board A hardware module that holds electronic circuitry and usually
fits into a larger frame where the various PCB’s are
interconnected electronically.
PDU
Packet Data Unit or Protocol Data
Unit
A data packet. Refers to that which is exchanged between peer-
layer entities. Contains header, data, and trailer information.
Ping
Ping Generalized term from sonar science, where a short sound burst
is sent out and an echo or “ping” is received. Used to determine
if signals or packets have been dropped, duplicated, or reordered.
PPPoE
Point-to-point Protocol Over
Ethernet
A protocol that allows dial-up Internet connections. Includes the
Link Control Protocol as well as Network Control Protocols.
Propagation
Propagation To spread out and affect a greater area; travel through space, as
in radio waves.
PSK
Phase Shift Keying Digital transmission term that means an angle modulation where
the phase of the carrier varies in relation to a reference or former
phase. An encoded shift. Each change of phase carries one bit of
information, where the bit rate equals the modulation rate.
PSN
Packet Switched Network A network in which data is transferred in units called packets.
Packets can be routed individually and reassembled to form a
complete message at the definition.
PSTN
Public Switched Telephone
N
etwor
k
Typically used in the same context as POTS. Analogous to a
network of major highways originally built by a single
organization but added to and expanded by multiple
organizations. AKA, backbone networks.
QAM
Quadrature Amplitude ModulationA bandwidth conservation process routinely used in modems.
Creates higher throughput but decreased coverage area.
QoS
Quality of Service A guaranteed throughput for critical network applications, such
as Voice over IP. Term primarily used in an ATM environment.
Five classes of service: Class 1 Video; Class 2 Audio; Class 3
Data Connection.
Part #40-00047-01 Rev C v1.0 (1.20) 13
September 26, 2003