You mentioned that you could do “peer to peer”, that is FXO to FXS accross the net or just device to device without I.P. static.
How do you do that???? So far ,the only way to do that that I know is using a gatekeeper or server that is in a fix I.P.
Aplio used to claim that, but in reality it was a server that does the “conection” betwen two devices that are on dinamic I.P. address.
Do you know what is the trick???