I am new to the Asterisk world. I just setup Asterisk with FreePBX. I registered 2 extensions with softphone over the same LAN as the Asterisk machine and they works fantasticly well within the LAN. Up to this point, I haven’t registered any VoIP providers yet, since everything is done internally.
I would like to know if I can register another SIP extension with this Asterisk box outside of my network , i.e. in my mother’s house over the internet?
Do I have to have a trunk register with a particular VoIP provider in order to do this?
More specifically, can I setup another * machine at my mother’s house and connect the 2 * machines together over the Internet with IAX protocol and without an VoIP provider?