I'd like to setup a local PBX server. I currently have Verizon FIOS. Digital Voice comes with it which should be VoIP. It's my understanding this requires using regular analog phone to which the ONT acts as the VoIP gateway to then convert to digital--is this correct? Is this doable, and how would I set this up? I just got service and haven't bothered to buy a phone yet. Could I buy an IP phone and connect via Ethernet cabling, or would this not work or would it just not work when simultaneously using an analog phone?