Avaya 3645 Panduan Instalasi - Halaman 6

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Avaya 3645 Panduan Instalasi
Installation Guide
802.11b/g Non-interfering Channels with Overlapping Cell Coverage
If adjacent access points are set to the same channel, or utilize channels with overlapping frequency
bands, the resulting interference will cause a significant reduction in the network performance and
throughput, and will degrade overall voice quality.
With more available channel options, the 802.11a wireless standard has improved the flexibility of
WLAN layouts, and enabled the possibility for greater density of AP deployments. In an 802.11a
deployment, all 23 channels are technically considered non-overlapping, since there is 20 MHz of
separation between the center frequencies of each channel. However, because there is some
frequency overlap on adjacent 802.11a channel sidebands, there should always be at least one cell
separating adjacent channels and two cells separating the same channel. This methodology is
depicted in the sample 802.11a channel plan provided below:
802.11a Non-interfering Channels with Overlapping Cell Coverage
Wireless bridges are sometimes used to interconnect geographically disbursed Ethernet LANs or to
extend the range of existing WLANs. Such devices create bottlenecks for network capacity and add
Octiober 2008
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