Linksys WAP54GX manual What is the ISM band?

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Wireless-G Access Point with SRX

What is the ISM band?

The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM (Industrial, Scientific 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.

What is Spread Spectrum?

Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade-off produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).

What is DSSS? What is FHSS? And what are their differences?

Frequency Hopping Spread Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct Sequence Spread Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers.

Would the information be intercepted while transmitting on air?

WLAN features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, the WLAN series offers a variety of wireless security methods to enhance security and access control. Users can set it up depending upon their needs.

Can Linksys wireless products support file and printer sharing?

Linksys wireless products perform the same function as LAN products. Therefore, Linksys wireless products can work with NetWare, Windows NT/2000, or other LAN operating systems to support printer or file sharing.

What is WEP?

WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 40-bit shared-key algorithm, as described in the IEEE 802.11 standard.

Appendix A: Troubleshooting

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Frequently Asked Questions

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Contents 802 GHz .11g Wireless- G Copyright and Trademarks How to Use this User GuideTable of Contents Appendix B Wireless Security Appendix a TroubleshootingFrequently Asked Questions Back Panel Front PanelWireless Security Radius Screen Welcome IntroductionWhat’s in this User Guide? Wireless-G Access Point with SRX Network Topology Planning Your Wireless NetworkRoaming Network Layout Wireless Getting to Know the Wireless-G Access Point with SRXBack Panel Connections for Setup Connecting the Wireless-G Access Point withOverview Using the Setup Wizard Setting up the Wireless-G Access Point withConnect the Network Cable to the Router or Switch Screen Check the Access Point’s Status Screen Password Screen Basic Settings Screen Wireless Settings Screen Configuring the Access Point’s Wireless SettingsWEP 128-Bit WEP 64-BitWPA2 Personal WPA/WPA2 Personal WPA Personal14 WPA2 Mixed Mode Settings Screen WPA2 Mixed Mode16 Congratulations Screen Setup Configuring the Wireless-G Access Point with SRXNavigating the Utility Administration WirelessStatus Setup Network Setup Tab Accessing the UtilityNetwork Setup Setup Static IP Screen Basic Wireless Settings Wireless Basic Wireless Settings TabWireless Security Wireless Wireless Security TabWPA2-Mixed Radius Wireless MAC Filter Wireless Wireless MAC Filter TabAdvanced Wireless Wireless Advanced Wireless Settings TabWireless-G Access Point with SRX Management Administration Management TabLog Administration Log TabAdministration Firmware Upgrade Tab Administration Factory Defaults TabFirmware Upgrade AP’s Information Status Local Network TabLocal Network Wireless Network Status Wireless Network TabFrequently Asked Questions Appendix a TroubleshootingWhat Ieee 802.11g features are supported? What is the ISM band? Does the Access Point function as a firewall? Security Precautions Appendix B Wireless SecuritySecurity Threats Facing Wireless Networks Security Threats Facing Wireless Networks Wireless-G Access Point with SRX Appendix C Upgrading Firmware Shared Resources Appendix D Windows HelpNetwork Neighborhood/My Network Places Appendix E Glossary Wireless-G Access Point with SRX Wireless-G Access Point with SRX Wireless-G Access Point with SRX Wireless-G Access Point with SRX Standards Appendix F SpecificationsEnable/disable ModelStorage Humidity Operating HumidityLimited Warranty Appendix G Warranty InformationFCC Statement Appendix H Regulatory InformationWireless-G Access Point with SRX Wireless-G Access Point with SRX Wireless-G Access Point with SRX Wireless-G Access Point with SRX Dual-Band Wireless Access Point Appendix I Contact Information
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