Cisco AP541N-A-K9 Administration Manual page 86

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Table 19 Advanced Settings Field Descriptions
Field Description
The range of available channels is determined by the mode
Channel
of the wireless radio interface and the country code setting.
If you select Auto for the channel setting, and Auto channel is
configured, the access point scans available channels,
immediately selects a channel and begins operation. If
interference or errors occur on that channel, another channel
is automatically selected.
The channel defines the portion of the wireless radio
spectrum the wireless radio uses for transmitting and
receiving. Each mode offers a number of channels,
depending on how the spectrum is licensed by national and
transnational authorities such as the Federal
Communications Commission (FCC) or the International
Telecommunication Union (ITU-R).
This field is available only if the wireless radio mode includes
Channel
Bandwidth 802. 1 1n.
The 802. 1 1n specification allows a 40-MHz-wide channel in
addition to the legacy 20-MHz channel available with other
modes. The 40-MHz channel enables higher data rates but
leaves fewer channels available for use by other 2.4 GHz and
5 GHz devices.
Select a value to set the use of the channel bandwidth.
The default is 20-MHz.
Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide
Wireless
Modifying Advanced Settings