Setting up Asterisk with Time Warner Digital Phone

I have Time Warner Digital phone and I take one of the analog ports and just tie it into a 66 block to feed the rest of the analog phones in the house. I have a Linksys PAP2 v2 and FreePBX on a Raspberry Pi and I’d like to know if that is a viable setup for having all of my inbound calls go to the PBX for routing. My research thus far indicates that it isn’t possible with the PAP2 because it’s only FXS ports, and I’ll need one of each.