User's Manual

Glossary
GL-3
Quick Start Guide: Cisco Aironet 1500 Series Lightweight Outdoor Mesh Access Point
78-17229-01
G
gateway
A device that connects two otherwise incompatible networks.
GHz
Gigahertz. One billion cycles per second. A unit of measure for frequency.
I
IEEE
Institute of Electrical and Electronic Engineers. A professional society serving electrical engineers
through its publications, conferences, and standards development activities. The body responsible
for the Ethernet 802.3 and wireless LAN 802.11 specifications.
infrastructure
The wired Ethernet network.
IP address
The Internet Protocol (IP) address of a station.
IP subnet mask
The number used to identify the IP subnetwork, indicating whether the IP address can be
recognized on the LAN or if it must be reached through a gateway. This number is expressed in a
form similar to an IP address, such as 255.255.255.0.
isotropic
An antenna that radiates its signal in a spherical pattern.
M
MAC
Media Access Control address. A unique 48-bit number used in Ethernet data packets to identify
an Ethernet device, such as a outdoor access point.
modulation
Any of several techniques for combining user information with a transmitter’s carrier signal.
multipath
The echoes created as a radio signal bounces off physical objects.
multicast packet
A single data message (packet) sent to multiple addresses.
O
omni-directional
A primarily circular antenna radiation pattern.
Orthogonal Frequency
Division Multiplex
(OFDM)
A modulation technique used by IEEE 802.11a-compliant wireless LANs for transmission at 6, 9,
12, 18, 24, 36, 48, and 54 Mbps.
outdoor access point
A wireless LAN transceiver that is used to provide wireless Ethernet networks.