Kevin Kirmse - 2020-07-08

I have set of a RasPBX on a Pi 4. I am communicating between a cell phone and a RPi 4 running Linphone. Audio calls work correctly. However when I do a video call through the PBX I see pauses of as much as 10 seconds in the video stream. Direct connection does not suffer this delay. What should I be looking at to try and resolve this problem?