Hi! I am thinking about a Push-to-talk feature for a VoIP client. I want to have the PTT feature serverless. For example if the clients are all in the same subnet I could use broadcasts - all clients listen on a certain port for incoming RTP and the sender just sends RTP to the certain port and the broadcast IP. If the group spans multiple subnets, I could use multicast instead of broadcast. I wonder if anybody has done something similar and if pjmedia supports multicast/broadcast too? thanks klaus