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Glossary
GL-4
Cisco Aironet 1300 Series Outdoor Access Point/Bridge Hardware Installation Guide
OL-5048-02
multipath
The echoes created as a radio signal bounces off of physical objects.
multicast packet
A single data message (packet) sent to multiple addresses.
N
non-root bridge
A wireless transceiver connected to a remote Ethernet network that communicates only with another
wireless transceiver connected to the main Ethernet network.
O
omni-directional
This typically refers to a primarily circular antenna radiation pattern.
orthogonal Frequency
Division Multiplex
(OFDM)
A modulation technique used by IEEE 802.11a-compliant and IEEE 802.11g-compliant wireless
LANs for transmission at 6, 9, 12, 18, 24, 36, 48, and 54 Mbps.
P
packet
A basic message unit for communication across a network. A packet usually includes routing
information, data, and sometimes error detection information.
POST
Power on self test. A series of diagnostic tests that run during a power up sequence.
power injector
A device that supplies DC power to another device over Ethernet communication lines.
Q
Quadruple Phase Shift
Keying
A modulation technique used by IEEE 802.11b-compliant wireless LANs for transmission at 2
Mbps.
R
range
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.
roaming
A feature of some Access Points that allows users to move through a facility while maintaining an
unbroken connection to the LAN.