I would appreciate if anyone could help here. I see this is a very interesting piece of software. Could anyone help me with my desired setup? Basically, I have a vonage line that I will use as a POTS line in my scenario...as if the vonage jack is a POTS jack. That makes calling north america free. I live in Saudi Arabia. I want to offer my friends in Saudi Arabia the ability to call North America for free using my vonage line. I want to assign them extensions on the 3CX server, so they can use any SIP client to connect and dial via the outgoing vonage POTS. Could this program serve this purpose? How would I set up extensions for people outside my network? Please advise. Thanks!