Dear all, I have an Asterisk 1.4.13 with SIP protocol and several voip clients (Twinkle, X-Lite and SJPhone). Every call among voip clients pass through the Asterisk server, so there isn't any voip packet client-to-client. Can Asterisk control the RTP open ports the voip clients use ??? Or the RTP open ports depend on the voip clients ??? Special thanks Alejandro