Allied Telesis AT-TQ2450 - page 47

AT-TQ2450 Wireless Access Point User’s Guide
47
Primary Channel Specifies the location of the Primary
channel when a radio is operating at 40
MHz.
A 40 MHz channel consists of two 20 MHz
channels. They are contiguous in the
frequency domain and referred to as the
Primary and Secondary channels. The
Primary channel is used by 802.11n
clients that support only a 20 MHz
channel bandwidth, and for legacy clients.
You may use this parameter to specify the
Primary channel of the 40 MHz
bandwidth. The options are described
here:
- Upper: Designates the upper 20 MHz
channel of the 40 MHz bandwidth as the
Primary channel.
- Lower: Designates the lower 20 MHz
channel of the 40 MHz bandwidth as the
Primary channel. This is the default
setting.
This parameter is only available with
802.11n modes.
Table 3. Modify Radio Settings Window (Continued)
Parameter Description