CenturyLink south of 466A (and probably other parts also) is fiber optics to the house, not copper. It will still work during a power outage because of a battery backup (UPS) powering the box of electronics on the outside of the house (ONT).
Quote:
Originally Posted by Ecuadog
A true "landline" is copper wire. That's CenturyLink. It still works during a power failure.
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