User's Manual

Navini Networks, Inc. Ripwave Base Station I&C Guide
17
Term Stands For.... Meaning
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.
OTA
Over-the-Air A standard for the transmission and reception of application-
related information in a wireless communications system.
PC
Personal Computer Any IBM-compatible computer, so named because IBMs 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 PCBs 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.
PVC
Private Virtual Circuit A software-defined logical connection between end points in a
network.
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.
RAM
1
Random Access Memory or
2
Responsibility Assign Matrix
1
Computer memory that can be accessed randomly.
2
A document
created during the BTS installation and Commissioning, defining
who is responsible for performing each task.
RBW
Resolution Band Width A parameter set on the spectrum analyzer during insertion loss
measurements