User's Manual
detects the collision of the two transmitted packets and discards both of them.
C
o
v
er
a
g
e
The region within which a paging receiver can reliably receive the transmission of paging signals.
Coverage
A
re
a
The geographical area that can be served by a mobile communications network or system.
Coverage
Ho
l
e
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.
CyclicRedundancyCheck
(
C
R
C
)
Acommontechniquefordetectingdatatransmissionerrors.
DynamicHostConfiguration Protocol
(
DH
C
P)
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
Sp
o
t
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
AnIEEEstandardforWLANsthatoperatesat2.4GHz,withdatarateof300Mbps.Thenew
standardalsoraisestheencryptionbartoWPA2.The40HToptioncanbeaddedtoincreasethe
datarat e.
E
n
c
r
y
p
t
i
o
n
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
I
D
TheuniqueidentifierforanESS.AllAccessPointsandtheirassociatedwirele ssstationsinthe
samegroupmusthavethesameESSID.
F
oo
t
p
r
i
n
t
Geographicalareaswhereanentityislicensedtobroadcastitssignal.
G
a
t
e
w
a
y
Acomputersystemorotherdevicethatactsasatranslatorbetweentwosystemsthatuse