Yes. I use one of my Dell DAR receivers over the phone lines in my house, even though I have DSL.

I don't recall, right at the moment, whether I have to plug them in behind the DSL line filters or in front of them.

Please note that in order for you to use a phone line to connect the receiver to the server, the server must have an interface for HPNA networking (a special kind of network interface that is different from an ethernet network interface).

If you don't have HPNA on the server side, then you have to run an ethernet connection (either wired or wireless).