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Appendix D Wireless LANs
P-2802H(W)(L)-I Series User’s Guide
365
Figure 228
Infrastructure WLAN
Channel
A channel is the radio frequency(ies) used by IEEE 802.11a/b/g wireless devices. Channels
available depend on your geographical area. You may have a choice of channels (for your
region) so you should use a different channel than 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.
Содержание P-2802H-I Series
Страница 1: ...www zyxel com P 2802H W L I Series VDSL VoIP IAD User s Guide Version 3 70 6 2007 Edition 1...
Страница 2: ......
Страница 7: ...Safety Warnings P 2802H W L I Series User s Guide 7...
Страница 8: ...Safety Warnings P 2802H W L I Series User s Guide 8...
Страница 10: ...Contents Overview P 2802H W L I Series User s Guide 10...
Страница 32: ...List of Tables P 2802H W L I Series User s Guide 32...
Страница 33: ...33 PART I Introduction Introducing the ZyXEL Device 35 Introducing the Web Configurator 43...
Страница 34: ...34...
Страница 50: ...Chapter 2 Introducing the Web Configurator P 2802H W L I Series User s Guide 50...
Страница 51: ...51 PART II Wizard Internet and Wireless Setup Wizard 53 VoIP Wizard And Example 65...
Страница 52: ...52...
Страница 64: ...Chapter 3 Internet and Wireless Setup Wizard P 2802H W L I Series User s Guide 64...
Страница 70: ...Chapter 4 VoIP Wizard And Example P 2802H W L I Series User s Guide 70...
Страница 72: ...72...
Страница 82: ...Chapter 5 Status Screens P 2802H W L I Series User s Guide 82...
Страница 88: ...Chapter 6 WAN Setup P 2802H W L I Series User s Guide 88...
Страница 116: ...Chapter 8 Wireless LAN P 2802H W L I Series User s Guide 116...
Страница 154: ...Chapter 10 Voice P 2802H W L I Series User s Guide 154...
Страница 174: ...Chapter 11 Firewalls P 2802H W L I Series User s Guide 174...
Страница 178: ...Chapter 12 Content Filtering P 2802H W L I Series User s Guide 178...
Страница 184: ...Chapter 13 Introduction to IPSec P 2802H W L I Series User s Guide 184...
Страница 219: ...Chapter 15 Certificates P 2802H W L I Series User s Guide 219 Figure 122 My Certificate Details...
Страница 238: ...Chapter 16 Static Route P 2802H W L I Series User s Guide 238...
Страница 250: ...Chapter 17 Quality of Service QoS P 2802H W L I Series User s Guide 250...
Страница 254: ...Chapter 18 Dynamic DNS Setup P 2802H W L I Series User s Guide 254...
Страница 282: ...Chapter 20 Universal Plug and Play UPnP P 2802H W L I Series User s Guide 282...
Страница 284: ...284...
Страница 324: ...Chapter 25 Troubleshooting P 2802H W L I Series User s Guide 324...
Страница 334: ...Chapter 26 Product Specifications P 2802H W L I Series User s Guide 334...
Страница 336: ...336...
Страница 348: ...Appendix A Setting up Your Computer s IP Address P 2802H W L I Series User s Guide 348...
Страница 404: ...Appendix G Legal Information P 2802H W L I Series User s Guide 404...
Страница 410: ...Appendix H Customer Support P 2802H W L I Series User s Guide 410...
Страница 418: ...Index P 2802H W L I Series User s Guide 418...