I don't know that this is possible - JTAC should be able to give you a definite answer.
I think someone could make a lot of money with a one-plug, network addressable remote power controller. I imagine a small device the size of the power supply for a laptop computer or a little smaller with the two power connections and an ethernet jack, running a telnet or http server for control. I'd probably be willing to spend $50-75 dollars for it. Unfortunately, I haven't found one of these.