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Coverage
The region within which a paging receiver can receive reliably the transmission of the paging
signals.
Coverage
Area
The geographical reach of a mobile communications network or system.
Coverage
Hole
An area within the radio coverage footprint of a wireless system in which the RF signal level is
below the design threshold. Coverage holes are usually caused by physical obstructions such as
buildings, foliage, hills, tunnels, and indoor parking garages.
Cyclic
Redundancy
Check
(CRC)
A
common
technique
for
detecting
data
transmission
errors.
Dynamic
Host
Configuration
Protocol
(DHCP)
A protocol that automatically assigns temporary IP addresses to client stations logging onto an IP
network, so users do not have to configure the IP addresses manually. The EOA7530 contains an
internal DHCP server that automatically allocates IP address using a user-defined address range.
Dead
Spot
An area within the coverage area of a WLAN in which there is no coverage or transmission falling
off. Dead spots are often caused by electronic interference or physical barriers such as hills,
tunnels, and indoor parking garages. See also coverage area.
802.11
A category of WLAN standards defined by the Institute of Electrical and Electronics Engineers
(IEEE).
802.11a
An IEEE standard for WLANs that operate at 5 GHz, with rates up to 54 Mbps.
802.11b
An IEEE standard for WLANs that operate at 2.4 GHz, with rates up to 11 Mbps.
802.11g
An
IEEE
standard
for
WLANs
that
operates
at
2.4
GHz
with
rates
up
to
54
Mbps.
Encryption
The translation of data into a secret code. Encryption is the most effective way to achieve data
security. To read an encrypted file, you must have access to a secret key or password that enables
you to decrypt it. Unencrypted data is called plain text ; encrypted data is referred to as cipher text
ESS
ID
An
ESSID
is
the
unique
identifier
for
an
ESS.
All
Access
Points
and
their
associated
wireless
stations
in
the
same
group
must
have
the
same
ESSID.
Footprint
Geographical
areas
in
which
an
entity
is
licensed
to
broadcast
its
signal.
Gateway
A
computer
system
or
other
device
that
acts
as
a
translator
between
two
systems
that
do
not
use
the
same
communication
protocols,
data
formatting
structures,
languages
and/or
architecture.