Khoa pham may you let me know where did you put manage_rtpproxy() in kamailio default configuration ?? -- View this message in context: http://sip-router.1086192.n5.nabble.com/How-to-let-Kamailio-to-always-use-RTP-proxy-tp115896p115948.html Sent from the Users mailing list archive at Nabble.com.