User`s guide

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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.
BB (Backbone) — The Station radio of the Extension Point that synchronizes with a Master
to attach to the network backbone.
BOOTP (Bootstrap Protocol) — A protocol used to assign IP addresses.
BSA (Basic Service Area) — A virtual cell created by the Master radio on the Extension
Point. RangeLAN2 Stations synchronize with the BSA radio.
Channel — In RangeLAN2 networks, the Channel refers to the frequency hopping se-
quence the card 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 collisions.
Download Image — A software file that is used to upgrade the software code running on
the Extension Point.
Frequency Hopping — A spread spectrum technique by which the band is divided into a
number of frequencies and the transmissions hop fromfrequency to frequency in a pre-
specified sequence.
Interference — A situation that occurs when an unwanted RF signal occupies the same
frequency band as a desired signal.