Goal: serial communication within my apartment via existing phone wiring.
Conditions: I live in the US I don't pay for phone service There's an RJ11 jack in every room
Concerns: is it possible? Are there any phone laws I might encroach on other than the gray area of using power-over-rj11? Are there extra steps with multiple serial devices communicating on the same line?
Larger goal: I'm aiming to use this for a cheap home automation system interconnect. A hub will be Ethernet enabled to be accessible outside the closed loop. Regardless of the immediate project It'd be handy for other projects.
Tips, alternate suggestions and pointers to good reference always welcome. I don't expect answers to fall into my lap, but I do appreciate at least a good push in the right direction.