Alvarion BreezeACCESS Wi2 System Manual page 121

6.1.3.2 Selecting Channels
For optimal performance when operating in 802.11b or 802.11g modes, select an operating
frequency that is different by at least 25 MHz from the frequency used by other wireless APs that
operate in neighboring cells.
Two channels with the minimum 25 MHz frequency separation always perform worse than two
channels that use maximum separation. It is always best to use the greatest separation possible
between overlapping networks.
With the proliferation of wireless networks, it is very possible that the wireless cells of APs outside
your control overlap your intended area of coverage. To choose the best operating frequency, select
Wireless > Neighborhood to generate a list of all APs that operate near you and their operating
frequencies.
The set of available channels is automatically determined based on the Country setting you define
by selecting Management > Country. This means that the number of non-overlapping channels
available to you varies by geographical location, which affects how you set up your multi-cell
network.
6.1.3.2.1 Sample Channel Selections
For example, when operating in 802.11b mode, the AP supports the following 14 channels in the 2.4
GHz band.
Channel
1
2
3
4
5
6
7
However, the number of channels available for use in a particular country are determined by the
regulations defined by the local governing body. The following table shows the number of channels
that are available in North America, Japan, and Europe.
BreezeMAX Wi² and BreezeACCESS Wi² System Manual
Frequency
2412
2417
2422
2427
2432
2437
2442
Region
North America
Japan
Europe
Channel Frequency
8 2447
9 2452
10 2457
11 2462
12 2467
13 2472
14 2477
Available channels
1 to 11
1 to 14
1 to 13
Wireless Coverage
99