Filtering — An action performed by an Ethernet device, such as a bridge, switch, or router, which excludes an Ethernet packet from being passed from one subnetwork to another based upon the packet's destination, source, or packet type.
Frequency Hopping — A spread spectrum technique by which the band is divided into a number of channels and the transmis- sions hop from channel to channel in a
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
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.
Spread Spectrum — A radio data transmission modulation technique by which the transmitted signal is spread over a band- width wider than the information bandwidth. Spread Spectrum bands are designated by the FCC and require no user license.
TCP/IP — Transmission Control Protocol/Internet Protocol. A suite of protocols developed under DARPA sponsorship for internetworking.
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