Cisco AIR-PCI340 Installation And Configuration Manual page 295

P
A basic message unit for communication across a network. A packet usually includes routing
packet
information, data, and sometimes error detection information.
Q
Quadruple phase shift keying. A modulation technique used by IEEE 802.11-compliant wireless LANs
QPSK
for transmission at 2 Mbps.
R
The frequency at which a radio operates.
radio channel
A linear measure of the distance that a transmitter can send a signal.
range
A measurement of the weakest signal a receiver can receive and still correctly translate it into data.
receiver sensitivity
Radio frequency. A generic term for radio-based technology.
RF
A feature of some access points that allows users to move through a facility while maintaining an
roaming
unbroken connection to the LAN.
A connector type unique to Cisco Aironet radios and antennas. Part 15.203 of the FCC rules covering
RP-TNC
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.
The packet size at which an access point issues a request to send (RTS) before sending the packet.
RTS threshold
S
A radio transmission technology that spreads the user information over a much wider bandwidth than
spread spectrum
otherwise required in order to gain benefits such as improved interference tolerance and unlicensed
operation.
Service set identifier. A unique identifier that stations must use to be able to communicate with an
SSID
access point. The SSID can be any alphanumeric entry up to a maximum of 32 characters.
Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows
OL-1394-07
Glossary
GL-5