detects the collision of the two transmitted packets and discards both of them.
Coverage
The region within which a paging receiver can reliably receive the transmission of paging signals.
Coverage
Area
The geographical area that can be served by a mobile communications network or system.
Coverage
Hole
An area within the radio coverage footprint of a wireless system where the RF signal level is
below the design threshold. Physical obstructions such as buildings, foliage, hills, tunnels, and
indoor parking garages are usually the cause of coverage holes.
Cyclic
Redundancy
Check
(CRC)
A
common
technique
for
detecting
data
transmission
errors.
Dynamic
Host
Configuration
Protocol
(DHCP)
A protocol that assigns temporary IP addresses automatically to client stations logging onto an IP
network, so the IP addresses do not have to be assigned manually. The OM2P-LC/OM2P-HS
contains an internal DHCP server that automatically allocates IP address using a user-defined
range of IP addresses.
Dead
Spot
An area within the coverage area of a WLAN where there is no coverage or transmission falling
off. Electronic interference or physical barriers such as hills, tunnels, and indoor parking garages
are usually the cause of dead spots. 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 data rates up to 54 Mbps.
802.11b
An IEEE standard for WLANs that operate at 2.4 GHz, with data rates up to 11 Mbps.
802.11g
An
IEEE
standard
for
WLANs
that
operates
at
2.4
GHz,
with
data
rate
of
300
Mbps.
The
new
standard
also
raises
the
encryption
bar
to
WPA2.
The
40
HT
option
can
be
added
to
increase
the
data
rate.
Encryption
Translates data into a secret code to achieve data security. To read an encrypted file, you must
have a secret key or password for decryption. Unencrypted data is referred to as plain text;
encrypted data is referred to as cipher text
ESS
ID
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
where
an
entity
is
licensed
to
broadcast
its
signal.
Gateway
A
computer
system
or
other
device
that
acts
as
a
translator
between
two
systems
that
use
