m (Drdanz moved page Real-Time Communication and Collaboration/Components/Call UI to KTp/Components/Call UI: As discussed at IRC meeting Real-Time_Communication_and_Collaboration is too long, we are moving all our pages to KTp)
If you have farsight installed, it won't work. Remove it.
Farstream has to be installed to a location detectable by gstreamer (in my case /usr/)
Start the call-ui manually with --debug --persist to get helpful info.