Appendix B Wireless LANs
P-660W-Tx v2 User’s Guide
211
Figure 117
Infrastructure WLAN
Channel
A channel is the radio frequency(ies) used by wireless devices to transmit and receive data.
Channels available depend on your geographical area. You may have a choice of channels (for
your region) so you should use a channel different from an adjacent AP (access point) to
reduce interference. Interference occurs when radio signals from different access points
overlap causing interference and degrading performance.
Adjacent channels partially overlap however. To avoid interference due to overlap, your AP
should be on a channel at least five channels away from a channel that an adjacent AP is using.
For example, if your region has 11 channels and an adjacent AP is using channel 1, then you
need to select a channel between 6 or 11.
RTS/CTS
A hidden node occurs when two stations are within range of the same access point, but are not
within range of each other. The following figure illustrates a hidden node. Both stations (STA)
are within range of the access point (AP) or wireless gateway, but out-of-range of each other,
so they cannot "hear" each other, that is they do not know if the channel is currently being
used. Therefore, they are considered hidden from each other.
Summary of Contents for P-660W-T1 v2
Page 2: ......
Page 8: ...Safety Warnings P 660W Tx v2 User s Guide 8 ...
Page 10: ...Contents Overview P 660W Tx v2 User s Guide 10 ...
Page 18: ...Table of Contents P 660W Tx v2 User s Guide 18 ...
Page 22: ...List of Figures P 660W Tx v2 User s Guide 22 ...
Page 25: ...25 PART I Introduction Introducing the ZyXEL Device 27 Introducing the Web Configurator 31 ...
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Page 30: ...Chapter 1 Introducing the ZyXEL Device P 660W Tx v2 User s Guide 30 ...
Page 36: ...Chapter 2 Introducing the Web Configurator P 660W Tx v2 User s Guide 36 ...
Page 37: ...37 PART II Setup Wizard Connection Setup Wizard 39 Media Bandwidth Management Wizard 47 ...
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Page 46: ...Chapter 3 Connection Setup Wizard P 660W Tx v2 User s Guide 46 ...
Page 50: ...Chapter 4 Media Bandwidth Management Wizard P 660W Tx v2 User s Guide 50 ...
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Page 83: ...Chapter 7 WAN Setup P 660W Tx v2 User s Guide 83 Figure 32 WAN Setup PPPoE ...
Page 104: ...Chapter 8 Network Address Translation NAT Screens P 660W Tx v2 User s Guide 104 ...
Page 130: ...Chapter 11 Firewall Configuration P 660W Tx v2 User s Guide 130 ...
Page 156: ...Chapter 15 Logs Screens P 660W Tx v2 User s Guide 156 ...
Page 169: ...169 PART IV Maintenance Maintenance 171 ...
Page 170: ...170 ...
Page 184: ...Chapter 17 Maintenance P 660W Tx v2 User s Guide 184 ...
Page 185: ...185 PART V Troubleshooting and Specifications Troubleshooting 187 Product Specifications 193 ...
Page 186: ...186 ...
Page 192: ...Chapter 18 Troubleshooting P 660W Tx v2 User s Guide 192 ...
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Page 208: ...Appendix A Pop up Windows JavaScripts and Java Permissions P 660W Tx v2 User s Guide 208 ...
Page 226: ...Appendix C Common Services P 660W Tx v2 User s Guide 226 ...
Page 232: ...Appendix D Legal Information P 660W Tx v2 User s Guide 232 ...