RLX2-IHx Series ♦ 802.11a, b, g, n
Glossary of Terms
Industrial Hotspots
User Manual
ProSoft Technology, Inc.
Page 240 of 248
ASCII
American Standard Code for Information Interchange. A communication mode in which
each eight-bit byte in a message contains one ASCII character code. ASCII characters
(or hexadecimal characters) are sometimes used as a key to encrypt data and ensure its
secure transmission.
Association
Process whereby two 802.11 radios establish communications with each other.
Requirements for communication include the same SSID (network names) and
encryption settings.
Authenticate
The process of confirming the identity of someone connecting to a network.
Authentication Server
A back-end database server that confirms the identity of a supplicant to an authenticator
in an 802.1x-authenticated network.
B
Band
Another term for spectrum used to indicate a particular set of frequencies. Wireless
networking protocols work in either the 2.4 GHz or the 5 GHz bands.
Bandwidth
(see Throughput)
Bridging Client, Radio Mode
A radio in
Bridging Client
mode can connect to any Access Point, and can support one
multiple Ethernet device but can only bridge IP-based traffic. See also
Repeater, Radio
Mode
.
C
CACT
CACT is an acronym for
Channel Availability Check Time
, a parameter used in DFS
channel selection. During DFS when a radio changes channels, it must listen for the
CACT on the new channel before beginning operations. For most channels the CACT is
60 seconds.
Channel
One portion of the available radio spectrum that all devices on a wireless network use to
communicate. Changing the channel on the access point/router can help reduce
interference.
D
dBi
Decibels referenced to an ideal isotropic radiator in free space; frequently used to
express antenna gain
dBm
Decibels referenced to one milliwatt (mW); an absolute unit used to measure signal
power (transmit) power output or received signal strength)