Proxim RANGELAN2 7510, User Manual

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C. Glossary
Access Point — An internetworking device that seamlessly connects wired and wireless
networks together.
Bandwidth — The size (in Hertz) of the frequency range that a signal transmission occupies.
Typical narrow band signals occupy a 25 KHz bandwidth. The RangeLAN2 signal occupies
a 1 MHz bandwidth.
BOOTP (Bootstrap Protocol) — A protocol used to assign IP addresses.
Channel — In RangeLAN2 networks, the channel refers to the frequency hopping sequence
the radio follows.
CSMA/CA — (Carrier Sense Multiple Access/Collision Avoidance) — CSMA is a proto-
col in which each node senses whether or not a channel is in use before attempting to transmit
information. CA is an optimization by which channel time is reserved to avoid colli-
sions.
Download Image — A software file that is used to upgrade the software code running on
the RangeLAN2 Access Point.
Frequency Hopping — A spread spectrum technique by which the band is divided into
a number of channels and the transmissions hop from channel to channel in a pre-speci-
fied sequence.
Interference — A situation that occurs when an unwanted RF signal occupies the same
frequency band as a desired signal.
IP Address (Internet protocol address) — A 32-bit address assigned to TCP/IP hosts.
Narrow Band — A channel of about 25 KHz bandwidth in the RF spectrum. The
FCC allocates Narrow Band channels and issues a license to the user. Each user of a
specific narrow band frequency range must obtain a site license from the FCC.