This seems neat. I have some minor stuff I'd like an ATA to do differently [1], and maybe I can make it work with this, if I get motivated!

[1] I don't quite remember what I wanted to do, so that's the first part! But I have a telephone controlled gate, with 3-pair wiring, and right now I'm using two pair for phone inbound and outbound, and one pair I can't use... If I can get the ATA to interface well enough with just one pair to the gate, then I can use two pair for ethernet, and I don't need to use a modem to interface with the gate over the phoneline.