For a year now, I’ve used my Series 1 DirecTiVo with my Vonage broadband phone connection to phone DirecTV for updates and to let them know that I had not purchased any movies.
When I got home from my trip to L.A., the TiVo was telling it could not dial into DirecTV. So after some searching, and calling Vonage, I found this conversation on vonage-forums.
Essentially, this was the fix that worked:
For most series 1 DTiVos all that needs to be done is:
Enter *99 as a call waiting prefix
Enter ,#019 as a dialing prefix.