Hello all,  I am currently trying to configure Kamailio and rtpproxy to play back a short message to the user-agent.  I’ve started rtpproxy using:  rtpproxy -F -s udp:127.0.0.1:7722 -l 10.1.10.102 -d WARN:LOG_LOCAL0 -u root  I created the necessary sound file using makeann from the source of rtpproxy. Below are the relevant pieces of kamailio.cfg # ----- rtpproxy parameters ----- modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:7722") Kamailio.cfg ————— # Validate that the User Agent via IP Authorization via a SQL table     if (!allow_address("1", "$si", "$sp"))     {         sl_send_reply("403", "Forbidden");         xlog("**** $si is UNAUTHORIZIED ****");         exit;     }     xlog("Enter route 1");     if (has_body("application/sdp")) rtpproxy_answer();     if (is_method("INVITE")) {         xlog("New Call for route [ fu=$fu/ tu=$tu /ru=$ru/ ci=$ci]");         if (rtpproxy_offer())         {             t_on_reply("1");         }         else         {             t_on_reply("2");         }         #t_on_branch("2");         #t_on_failure("1");     }    if (!t_relay())     {         sl_reply_error();     }     exit; } onreply_route[1] {         if (has_body("application/sdp")) rtpproxy_manage();         rtpproxy_stream2uas("/var/rtpproxy/prompts/connect", "-1");         exit; } onreply_route[2] {         if (has_body("application/sdp")) rtpproxy_offer();         exit; } When starting Kamailio, it informs me that it found the proxy and it enabled support for it.  May 21 20:44:50 localhost /usr/local/sbin/kamailio[23816]: INFO: rtpproxy [rtpproxy.c:1607]: rtpp_test(): rtp proxy <udp:127.0.0.1:7722> found, support for it enabled Now, once I start up a call, rtpproxy reports the following information: May 21 20:14:35 localhost rtpproxy[23379]: INFO:handle_command: new session MTFiNWU1N2NiZGQwNWMwYzVkN2MzZjUyNzhkNTU3YWE., tag 88fc4d50;1 requested, type strong May 21 20:14:35 localhost rtpproxy[23379]: INFO:handle_command: new session on a port 41236 created, tag 88fc4d50;1 May 21 20:14:35 localhost rtpproxy[23379]: INFO:handle_command: pre-filling caller's address with 10.8.0.10:8000 May 21 20:14:35 localhost /usr/local/sbin/kamailio[23528]: ERROR: <script>: rtpproxy_offer returned true May 21 20:14:35 localhost /usr/local/sbin/kamailio[23522]: ERROR: rtpproxy [rtpproxy.c:1771]: select_rtpp_node(): script error -no valid set selected May 21 20:14:35 localhost /usr/local/sbin/kamailio[23522]: ERROR: rtpproxy [rtpproxy_stream.c:113]: rtpproxy_stream(): no available proxies Any assistance is greatly appreciated !  — Thyrus Gorges