I love seeing how there are a number of parallel projects working on same thing but coming up with different ways to it. The other thread on this looks at ADT (honeywell and DSC) panels with envisalink modules and an alarm server running on a computer of some sort. I am actually going to use a Raspberry Pi mounted in the alarm panel to act as the computer to run it but i like the old mac mini idea too… Think the other path being used it here: