Is it true that my Freedom Essentials (FE) goes back to the "Central Office" (CO) via copper whereas if I switch to Digital Voice I would go back to the CO via the fiber optics route? If true, will my FE still work if the fiber optics from the side of my house back to the CO goes down (with or without the FIOS battery?). In other words will I lose my emergency phone ability (copper to CO) if my fiber optics/internet to CO goes down? Will switching to Fios Digital Voice save me from paying the $6.50 tax paid to have a house phone? Is there a price difference otherwise between Digital Voice and Freedom Essentials? Is it a simple matter of throwing a switch by Verizon to go to Digitial Voice, ie, not tech visit required? Thanks.