New Features; Radio Basics - Symbol Spectrum24 AP-3020 Reference Manual

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New Features

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1.2

Radio Basics

Spectrum24 uses electromagnetic waves, radio signals, to transmit and
receive electric signals without wires. Users communicate with the network by
establishing radio links between terminals and APs.
Spectrum24 uses FM (frequency modulation) to transmit digital data from
one device to another. Using FM, a radio signal begins with a carrier signal
that provides the base or center frequency. The digital data signal is
superimposed on the carrier signal (modulation). The radio signal
propagates into the air as electromagnetic waves. A receiving antenna in the
path of the waves absorbs the waves as electrical signals. The receiving
device demodulates the signal by removing the carrier signal. This
demodulation results in the original digital data.
Spectrum24 uses the environment (the air and certain objects) as the
transmission medium. Spectrum24 radio devices use the 2.4 to 2.5-GHz
frequency range, a license-free range throughout much of the world. The
actual range is country-dependent.
Spectrum24 Access Point AP-3020 Product Reference Guide
IEEE 802.1d Spanning Tree Support
Auto-Fallback to Wireless Mode
Increased MIB support
DHCP Support
HTTP , Web server Support
Mobile IP Support
Programmable SNMP Trap Support using SNMP Agents
Data Encryption
Wireless Options in Radio Parameters
ACL (Access Control List)
AP Auto Upgrade of other APs via messaging
Multiple Gateways.
Introduction
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