Hello! I'm new in this domain and want to learn. I want to create a voice network, in my office, just for learn, without access to external. My components are: - 4 PC (3 with 3CX softphone and 1 PC with 3CXPhoneSystem15) - 1 GATEWAY (TOPEX Qutex Signaling Gateway) - 2 analog phones The main purpose is to communicate between devices (pc<<>>analog phone). Util now I installed 3CXPhoneSystem on PC and 3CX softphones and I created extensions. Between PCs all is good,ringing. Next step is to set up a SIP Trunk and Outbound Call (i think), to be able to ring analog phone through gateway. I read and saw tutorials, but all involve providers. How can I create SIP trunks for my LAN, without provider?