B • Glossary of terms
Model 6276 User Guide
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C
C
CFM
Cubic feet per minute—A measurement of how much
air is moved through a fan.
CSA
Canadian Standards Association—Organization
which operates a listing service for electrical and elec-
tronic materials and equipment. It is the body that
establishes telephone equipment (and other) stan-
dards for use in Canada.
CT
Computer Telephony—is the adding of computer
intelligence to the making, receiving, and managing
of telephone calls.
D
Dual Redundant
An environment containing two power supplies, with
fault tolerance such that one power supply may fail
and the system will continue to operate.
E
ECTF
Enterprise Computer Telephony Forum—A non-
profit corporation formed to focus on the technical
challenges of interoperability among Computer Tele-
phony Integration (CTI) products.
EIA
Electronics Industry Association—Trade organiza-
tion of manufacturers which sets standards for use of
its member companies.
EMC
Electromagnetic Compatibility—Is the ability of
equipment or systems to be used in their intended
environment within designed efficiency levels without
causing or receiving degradation due to unintentional
EMI.
EMI
Electromagnetic Interference—any electromagnetic
interference, periodic or random, narrow or broad-
band, which may have a disturbing influence on
devices exposed to it.
EN
European Norms—Prefix assigned to documents
adopted by the CE designating required standards
(for example, EN 60950 is the safety specification
(equivalent to UL 1950)).
Enumeration
The action taken by the Host to poll the configura-
tion spaces of the PCI devices and allocate (deallo-
cate) the necessary resources (memory and/or I/O
address space, interrupts, software drivers).
ESD
Electrostatic Discharge—Discharge of a static charge
on a surface or body through a conductive path to
ground. Can be damaging to integrated circuits.
Eurocard
A series of mechanical board form factor sizes for
rack-based systems.
H
Hot-Swap
The capability of removing and replacing components
without turning off the system. Hot-swap capability is
increasingly important in systems used for applica-
tions such as telecommunications, which require that
the system be operational at some level continuously.
HP
Horizontal Positioning—A unit of measurement used
for the width of CPCI cards/modules.
1 HP = 0.2 inch wide
