User's Manual

SPEEDLAN 8500 Series Installation and Operation User Guide
Glossary-9
Intermediate Frequency (IF)
The frequency to which a microwave signal is converted to permit signal processing. This range is typically around 70 to
200 MHz.
Internet
This is a system of linked networks that are worldwide in scope and facilitates data communicate service such as remote
login, file transfer, electronic mail, the World Wide Web and newsgroups. With the meteoric rise of demand for connectiv-
ity, the Internet has become the communications highway for millions of users. The Internet was initially restricted to mili-
tary and academic institutions in its infancy, but now it is a full-fledged information channel for any and all forms of
information and commerce. Internet web sites now provide personal, educational, political and economic resources to
every cornet of the planet.
IP Address
This address tells the network how to locate the computers or network equipment connected to it. IP addresses are given
so each computer or equipment on the network contains a unique address.
ISM (Industrial, Scientific, and Medical Bands
Ranges are 900 to 928 MHz; 2.4 to 2.4835 GHz; and 5.725 to 5.85 GHz. The FCC for unlicensed use allocated these
bands with a restriction on the output power.
Isotropic
Uniform in all directions.
Kbps
Thousands of bits per second.
KHz (KiloHertz)
Thousands of Hertz. Each wireless phone call occupies only a few KiloHertz.
LAN
This is a local area network that enables computers, network equipment, or other peripherals to communicate on a small
network.
Last mile
Any type of telecommunications technology where data (voice, video, etc) is traveled within relatively short distances to
maintain to highest quality of bandwidth and throughput.