What are the differences between the Global Control Permission and Wi-Fi Multimedia (WMM) function

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The WMM switch is used to control the whole WMM function for the AP. The WMM function includes global control permission switch and EDCA parameters.
The global control permission switch controls whether the STAs that do not support WMM can connect to a WMM-enabled AP.

Other related questions:
What are the relationship and difference between WLAN and Wi-Fi
Wi-Fi is a trademark of the Wireless Local Area Networks Alliance (WLANA). It is actually not a standard and only ensures that products using this trademark can interoperate with each other. As most Wi-Fi products use the IEEE 802.11b standard, Wi-Fi usually refers to 802.11b. Wi-Fi is a new technology that uses the WLAN protocol. Wi-Fi can provide wireless coverage in an area with a radius of up to 90 m (300 inches), while the WLAN can provide wireless coverage in an area with a radius 5 km (with antennas used). The biggest advantage of Wi-Fi is its high transmission speed (up to 11 Mbit/s). Wi-Fi is a short-distance wireless transmission technology applicable to offices and households.

What is the difference between the WMM mandatory switch and WMM function switch
The WMM function switch controls the entire WMM function of an AP. The entire WMM function includes the WMM mandatory switch and EDCA parameter. The WMM mandatory switch controls whether the terminals that do not support WMM can connect to a WMM-support AP.

What is the Wi-Fi capability of the TE20?
Wi-Fi capability: dual frequency bands, that is, 2.4 GHz and 5 GHz The TE20 (5X) and TE20 (12X) has a built-in Wi-Fi module, while the TE20 (5X-NoWIFI) does not.

Wi-Fi models supported by the USG2000&5000
The support of Wi-Fi on the USG2000/5000 is as follows: -USG2110-X: Only the USG2110-F-W, USG2110-A-W, and USG2110-A-GW support Wi-Fi. -USG2100, USG2100BSR, USG2100HSR: Only the USG2130W, USG2160W, USG2130BSR/HSR-W, and USG2160BSR/HSR-W support Wi-Fi. -USG2200/5100, USG2200BSR/5100BSR, USG2200HSR/5100HSR: Wi-Fi is not supported by default and can be supported after the Wi-Fi (WLAN) interface card is installed. -USG5500: The USG5500 does not support Wi-Fi.

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