Linksys WAP200RF manual What is the ISM band?

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Wireless-G Access Point with Power Over Ethernet and Rangebooster

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 User Guide Copyright and Trademarks How to Use this User GuideTable of Contents Appendix a Troubleshooting Appendix B Wireless SecurityFrequently Asked Questions List of Figures Example of a Simple Wireless Network20 Security Monitor Basic Settings Welcome IntroductionWhat’s in this User Guide? Introduction What’s in this User Guide? Planning Your Wireless Network Network TopologyRoaming Network Layout Example of a simple wireless network LEDs Getting to Know the Wireless-G Access PointPorts Access Point’s port are located on the back of the deviceAntennas and Positions Desktop Placement and Antenna SetupConnecting the Wireless-G Access Point OverviewConnection Placement Options Stand OptionWall-Mount Option Accessing the Utility Setting Up the Wireless-G Access PointSetup WirelessNavigating the Utility AP Mode AdministrationSecurity Monitor Status Network Setup Configuring the Wireless-G Access PointSetup Basic Setup Tab Basic SetupTime Setup Time TabBasic Settings Wireless Basic Wireless Settings TabWireless Security Wireless Wireless Security TabWPA2-Personal WPA-Personal aka WPA-PSKWPA-Enterprise WPA2-Personal MixedWPA2-Enterprise Mixed WPA2-EnterpriseRadius DisableConnection Control Wireless Wireless Connection Control TabWireless Connection Control Wireless Client ListAdvanced Settings Wireless Advanced Wireless Settings TabVlan Wireless Vlan & QoS TabQoS MAC Address AP Mode Tab18 Wireless Repeater Mode 19 Wireless Bridge Mode Security Monitor Basic Settings Tab Wireless Security MonitorSecurity Monitor Accounts Mail Notification Security Monitor Event Log TabSyslog Notification Management Administration Management TabWeb Access Local AP PasswordIdentification SnmpNotification Queue Length Administration Log TabLog Email AlertFirmware Upgrade Administration Factory Default TabAdministration Firmware Upgrade Tab Factory DefaultConfig Management Administration Reboot TabAdministration Config Management Tab RebootStatus Local Network Tab InformationLocal Network Wireless Network Status Wireless TabSystem Performance WiredWireless Status System Performance TabPage Frequently Asked Questions Appendix a TroubleshootingWhat Ieee 802.11g features are supported? What is the ISM band? Does the Access Point function as a firewall? Appendix B Wireless Security Security PrecautionsSecurity Threats Facing Wireless Networks Appendix B Wireless Security Page Appendix C Upgrading Firmware Appendix D Windows Help Shared ResourcesNetwork Neighborhood/My Network Places Appendix E Glossary Appendix E Glossary Appendix E Glossary Appendix E Glossary Appendix E Glossary 802.11F Wireless Roaming Appendix F SpecificationsSecurity Dhcp Client11g 14 dBm 11.g 54Mbps@ -72dBm, 11.b 11Mbps@ -85dBMWireless Security Monitor Suspicious network eventsCertification Limited Warranty Appendix G Warranty InformationAppendix H Regulatory Information Appendix H Regulatory Information Appendix H Regulatory Information Appendix H Regulatory Information Appendix H Regulatory Information Appendix H Regulatory Information Appendix H Regulatory Information Appendix I Contact Information Need to contact Linksys?Information section in this Guide
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