SWRU423A July 2015 – May 2016 WL1801MOD , WL1805MOD , WL1807MOD , WL1831MOD , WL1835MOD , WL1837MOD
The regulatory domain feature implements the IEEE 802.11d specification. Each country has a different list of channels in which it is allowed to operate. The AP is responsible to publish the country IE in its beacons. This IE contains all the information regarding the country being operated in, the allowed channels and allowed TX power on each channel. The STA must parse the country IE it receives (from any beacon, even before a connection is established), and act according to its content. There are separate IEs for 2.4-GHz and 5-GHz bands. The information from the country IE affects the way the STA performs a scan on each channel (passive/active), and the TX power used on each channel.