So, I am considering moving to the new T-Mobile VOIP offering for $10/month and ditching my land line. Currently I have three receivers (R-15, HR20, HR21) all connected via my landline for both Caller ID and ordering of PPV movies. I understand that the T-Mobile VOIP solution does not support modem based activity, including fax. Does anyone know if the caller id would still work on the recivers? I suspect this means that PPV would have to be ordered via the web (which is just as easy for me)... however my wife and I love the caller id on the TV screen, so we wouldn't want to give that up. Thoughts?