I need to understand how to create a basic configuration. i have already installed elastix server, i can log in into the web admin and change the configuration. i already created two extensions, 5001 and 5002 on SIP and i just need to call with zoiper from one computer to other. i created a sip trunk with this changes: maximun channels : 1 dial rules: 0034+xxxxxxxxx (spain) without peers details and without user details. i created a outbound call using number 9 to outside calls. and thats all. in conclusion my question is, if a just need to call from computer 1 to computer 2 using just sip device, what i need to do ? sorry for my poor english.