Recording to DVR - DirecTV DVR

For Recording to DVR, relating to DirecTV DVRs and receivers. Recenlty I purchased a DIRECTV® Receiver (R10) with 70 hours of recording. I installed the Dish and receiver mysefl and so far I am able to get a signal from one of the satellite and working on the other ones.

My question is, do I need to a phone line always connected to DVR to be able to record?

If the answer is Yes, can I use a different line such as my business line instead of my home line? I have a part time computer repair business and I would prefer to use that number instead of my home line since I have already DSL at my home line and I don't want to add more signals to it.

Waiting for feedback?