Hello @Aeronaut,
Nice to see you again as well!
I do not currently use the POTS ports, but would like to get around to it someday! Congratulations, on getting it working!
I have made some progress with WAVE 300 Wi-Fi.
I have documented it in this separate thread, because the subject may be of interest to people using routers other than the Tp-Link VR200/VR200v.
If you are interested, the help sure is wanted!