Do you have a family phone solution? [tech, domesticity]

I have been kicking around a post idea for something like a year or a year and a half, but I've been torn between wanting to write it as a post (and tell you things) and wanting to ask for solutions. Mr. Bostoniensis and I have been trying to consolidate our household, and the Brave New World of the Internet is... not facilitating this. Vendor after vendor, platform after platform, is organized…