Cisco Systems 1240AG manual GL-5

Glossary

O

omni-directional

OFDM

This typically refers to a primarily circular antenna radiation pattern.

Orthogonal frequency division multiplex is a modulation technique used by IEEE 802.11a-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.

Q

QPSK

	Quadruple phase shift keying is 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.
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.

Cisco Aironet 1240AG Series Access Point Hardware Installation Guide

OL-8371-05 GL-5