My dad's home network is down, and it looks like it will be a while before I can help him fix it. TiVo is therefore running out of guide data. If I tell him to plug in the phone line, will TiVo automatically use the phone after detecting the network is down? Or does he need to explicitly tell TiVo to switch over to using the phone? I'd just rather not tell TiVo to use the phone, and then have to reconfigure it for the network later. If it would be smart enough to use the phone line as backup automatically, that would be great. Then it would switch back to the network automatically once it's back up.