To start the signaling server use the run.py python file. Org.Webrtc reference must be added manually inside Visual Studio from the webrtc-uwp-sdk project that was built previously.
Reference can be found in webrtc-uwp-sdk\webrtc\windows\solutions\Build\Output\Org.WebRtc\[Release or Debug]\[x64 or x86]\Org.WebRtc.winmd

To try the sample between the two different devices in the same network insert your ip address into the ipAddress variable inside run.py file.
You will also need to change the roomServer variable inside appwindow.js file accordingly