Dell PowerConnect W-Series Instant Access Point 6.1.2.3-2.0.0.0 | User Guide Regulatory Domain | 153Chapter 21Regulatory DomainThe IEEE 802.11/b/g/n Wi-Fi networks operate in 2.4 GHz and IEEE 802.11a/n operate in 5.0 GHz spectrum.These spectrums are divided into channels. The 2.4 GHz spectrum is divided into 14 overlapping, staggered 20MHz wireless carrier channels. These channels are spaced 5 MHz apart. The 5 GHz spectrum is divided into morechannels. The channels that can be used in a particular country differ based on the regulations of that country.The initial Wi-Fi setup requires you to specify the country code for the country in which the Dell Instant willoperate. This configuration sets the regulatory domain for the radio frequencies that the IAPs use. Within theregulated transmission spectrum, a high-throughput 802.11a, 802.11b/g, or 802.11n radio setting can beconfigured. The available 20 MHz and 40 MHz channels are dependent on the specified country code.You cannot change the country code for the IAPs designated for US, Japan, and Israel. Improper country codeassignment can disrupt wireless transmissions. Most countries impose penalties and sanctions on operators ofwireless networks with devices set to improper country codes. Table 27 shows the list of country codes.Figure 115 Specifying a Country Code
