Now that we have an overview of how the main features of the Trixbox/FreePBX system are customized, we can create a simple PBX for handling a single line and extension for a home user. We can also take the knowledge of call routing gained from previous chapters and apply it to Trixbox/FreePBX. All of the concepts remain the same, we just apply them differently, and the result is virtually indistinguishable.
Firstly, we will configure our extensions by opening the PBX Settings section (Trixbox) or going to the FreePBX Dashboard. Click on Setup and find Extensions on the lefthand side. Then configure the extension screen as follows (you may wish to change some settings to fit your own needs):
After we have configured the extension, click on Add Extension on the bottom right hand corner of the screen. This sets up extension 200 for a SIP-based phone. We need to click on the red bar that appears afterwards, to apply the changes to the system.