[raybbr]

Question: If I do not subscribe to a landline service, will the phone company know I hacked into their box and am stealing their 5 volts?

If you have no dial tone then you have no voltage. Can't hack something that isn't there. Unless you are talking about going to a main box.

[I Buried My Guns]

I'm indeed talking about opening the box on the outside of my house. The phone line comes off the pole and goes to that box. Inside that box is another, smaller box that says "Phone company access only". I opened it.