Dear Klaus, Between Openser and rtpproxy is no media traffic, just the proprietary > rtpproxy protocol which is used by nathelper module to control the > rtpproxy.
thank you for the clarification. 1. Use ngrep to inspect the SIP message: > - look if the IP address in the c line in the SDP is replaced with the > rtpproxy's IP address and the port number is replaced with the port > number allocated by rtpproxy Using debug=7 I think I saw in the openser log that the c line was not replaced. 2. use tcpdump/wireshark/.... to verify if there are RTP packets sent to > your server. MAybe there is a firewall which blocks RTP packets. I opened all ports so it shouldn't have been a problem. Very fortunately I started on this trace you suggested. I tried to merge the nathelper.cfg file (shipped with openser as a factory documentation) with my openser.cfg. And voilá, it seems to work smoothly! :-D Thank you for your kind help! Best regards, Zoltan
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