When world mode is enabled, the Cisco Access Point (AP) adds channel carrier set information to its beacon. Client devices with world mode enabled receive the carrier set information and adjust their settings automatically. For example, a client device used primarily in Japan can rely on world mode to adjust its channel and power settings automatically when that device travels to Italy and joins a network there. World mode is disabled by default.
Note: The channels are hard-coded on AP chips. The world mode does not change the number of channels that are supported in a country. For example, in the U.S., channel 14 cannot be used even if world mode is configured.