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ISM Band
The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the
so-called ISM (Industrial, Scientifi c and Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is
being made available worldwide. This presents a truly revolutionary opportunity to place convenient high-
speed wireless capabilities in the hands of users around the globe.
Local Area Network (LAN)
A LAN is a group of computers, each equipped with the appropriate network adapter card connected by
cable/air, that share applications, data, and peripherals. All connections are made via cable or wireless
media, but a LAN does not use telephone services. It typically spans a single building or campus.
Network
A network is a system of computers that is connected. Data, fi les, and messages can be transmitted over
this network. Networks may be local or wide area networks.