Quote Originally Posted by Vumes View Post
FXS2 won't register no matter what I do. Also, on inbound calls, even though FXS1 is registered, I get a fast busy when I answer the Voipo phone, and the calling party goes to Voicemail.
Is the STUN setting enabled on Line 1, but not Line 2? If so, try enabling it on both.

Make sure both ports have the "Unregister on Reboot" option set to yes.