Easy Jack. Turns any electrical socket into a phone socket to attach modems, satellite TV, TiVo or whatever. From $49.99.
The Easy Jack is designed to turn any electrical outlet into a phone jack to connect Satellite TV Receivers, Digital Video Recorders (TiVo, ReplayTV), dial-up modems, and more to the phone line. The Easy Jack eliminates the costs and challenges of hard-wiring. Tested and approved by DirecTV, DISH Network, TiVo, ReplayTV.
Had these things in Australia for yonks…. weird, but they work (for dial-up anyway).