Avaya 3616 Series Руководство по установке - Страница 6

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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