Glossary
GL-5
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-30644-01
roaming A feature of some Access Points that allows users to move through a facility
while maintaining an unbroken connection to the LAN.
RP-TNC A connector type unique to Cisco Aironet radios and antennas. Part 15.203 of
the FCC rules covering spread spectrum devices limits the types of antennas that
may be used with transmission equipment. In compliance with this rule, Cisco
Aironet, like all other wireless LAN providers, equips its radios and antennas
with a unique connector to prevent attachment of non-approved antennas to
radios.
S
slot time The amount of time a device waits after a collision before retransmitting a
packet. Short slot times decrease the backoff time, which increases throughput.
spread spectrum A radio transmission technology that spreads the user information over a much
wider bandwidth than otherwise required in order to gain benefits such as
improved interference tolerance and unlicensed operation.
SSID Service Set Identifier (also referred to as Radio Network Name). A unique
identifier used to identify a radio network and which stations must use to be able
to communicate with each other or to an access point. The SSID can be any
alphanumeric entry up to a maximum of 32 characters.
T
transmit power The power level of radio transmission.
U
UNII Unlicensed National Information Infrastructure—regulations for UNII devices
operating in the 5.15 to 5.35 GHz and 5.725 to 5.825 GHz frequency bands.
UNII-1 Regulations for UNII devices operating in the 5.15 to 5.25 GHz frequency band.
UNII-2 Regulations for UNII devices operating in the 5.25 to 5.35 GHz frequency band.
UNII-3 Regulations for UNII devices operating in the 5.725 to 5.825 GHz frequency
band.
unicast packet A single data message (packet) sent to a specific IP address.