Fibre internet through coax

[wireless]

Right now i am running fibre internet in my house. Telus last year installed a little box behind my optik tv boxes where one end Coax goes in and out the other is ethernet that you then plug into the optik box to get your TV signal. I have actually been using that box to hardwire my xbox into and now get 150 MBPS down.

My question is if I cancel my Telus optik TV (keep the internet) will I lose internet capabilities through that little Coax to ethernet box?


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