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Landline phone

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Landline phone

I just installed a new Xfinity Internet/Voice cable box. My cable and WI-fi work fine. My landline has static. I traded out phones, telephone cables for the phones and to the new cable box. Called Comcast and they reset my phone twice. None of these took away the static. Yes the telephone wire is plugged into the "Tel" on the box. Phones were fine before the new box installation. 

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