Hi everyone, I just realised a "new" behavior from pjsip that i haven't seen before. I make a call from my user agent to a soft PBX, asterisk in this case, in order to get music on hold. When i make the call, the conference port for the new call gets created and i hear music on my headset. Eveything looks fine. My sound card sits on port 0 and the new call i made sits on port 1 and they are both transmitting to each other. However if i do "cd 0 1", that is stop my sound card to transmit to port 1, i can't hear the music anymore, even though i still have Port 1, the new conference port playing music on hold, transmitting to port 0. Any ideas? Hubert