Glossary
GL-4
Cisco Aironet 1400 Series Wireless Bridge Hardware Installation Guide. OL-4072-03
OL-4072-04
Ppacket A basic message unit for communication across a network. A packet usually includes routing
information, data, and sometimes error-detection information.
power injector A device that supplies DC power to another device over Ethernet communication lines.
Rrange A linear measure of the distance that a transmitter can send a signal.
receiver sensitivity A measurement of the weakest signal a receiver can receive and still correctly translate it into data.
RF Radio frequency. A generic term for radio-based technology.
root bridge A wireless transceiver connected to the main Ethernet network that communicates with other
wireless transceivers connected to remote Ethernet networks.
Sspread 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 a bridge. The SSID can be any alphanumeric entry up to 32 characters.
Ttransmit power The power level of radio transmission.
UUNII 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.