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Postscript

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• Postscript
  • The PCF mode is not supported by the Wi-Fi Alliance:

    Wi-Fi Alliance = a trade association that promotes Wi-Fi (802.11) technology and certifies Wi-Fi products if they conform to certain standards of interoperability. See: click here

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  • Consequently:

    Most Wi-Fi devices does not have the PCF mode built into the device

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  • So let move on and study the more popular operational mode:

    The DCF mode