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How to Certify your Bluetooth product?

I'm reading "How to Certify your Bluetooth product" at http://processors.wiki.ti.com/index.php/How_to_Certify_your_Bluetooth_product.

But what does "If you have created your own RF Circuitry, you need to perform PHY test before creating the EPL to ensure that your design is compliant." mean?

What qualifies as an own RF circuitry?