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Thu, Apr 8, 2021 7:44 PM

What's the difference between my modem, router, and Wi-Fi gateway?

I need to register my Wi-Fi gateway so I can watch AT&T TV. It says I have "error code 80005-001." I'm so confused. What is a Wi-Fi gateway?
How is that different from my router? Or modem?
How do I register the Wi-Fi Gateway? 

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