I have the same set up - Tivo series 2, direct tv and cable modem with a phone line plugged into the phone jack of the ooma hub. I used *pp with one pause but I also used 1 and the area code before the tivo dail in number. That worked to get a connection but during downloading the connection dropped 3 times. Not sure what the issue is now but will keep trying or just get a tivo wireless hub, I think you can get them for under $40.
Thanks, glad to have any suggestions. Tried *, and *,, but no luck.
Unfortunately I don't think I can go the Tivo hub route, since I have a DirecTV TiVo and they never enabled home networking on those.