<div dir="ltr"><p><span style="font-size:12pt;line-height:115%">hi </span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%">I have
configured kamailio and freeswitch on two Ubuntu servers as follows.</span></p><p><span style="font-size:12pt;line-height:115%"><br></span></p><p><span style="font-size:12pt;line-height:115%"> Sip_TRUNK------> kamailio-------> freeswitch</span></p><p><span style="font-size:12pt;line-height:115%">i wan to manage rtp through the kamailio server,</span></p><p><span style="font-size:12pt;line-height:115%">first i want to know,</span></p><p><span style="font-size:12pt;line-height:115%"> 1. can i do it without RTP Proxy ?</span></p><p><span style="font-size:12pt;line-height:115%"><br></span></p><p><span style="font-size:12pt;line-height:115%">anyway i tried it with RTP Proxy as follows, </span><br></p><p><span style="font-size:12pt;line-height:115%">I installed
rtpproxy on kamailio server and start it using </span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%">“rtpproxy –F
-l pu.bl.ic.ip -s udp:localhost :7722 -u root” it was working</span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%">Then I put</span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%"></span></p><div> </div><p></p>
<p><span style="font-size:12pt;line-height:115%">modparam("rtpproxy",
"rtpproxy_sock", "udp:localhost:7722")</span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%">modparam("rtpproxy",
"rtpproxy_retr", 2)</span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%">modparam("rtpproxy",
"ice_candidate_priority_avp", "$avp(ice_priority)")</span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%"></span></p><div> </div><p></p>
<p><span style="font-size:12pt;line-height:115%">mhomed=0</span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%"><br></span></p><p><span style="font-size:12pt;line-height:115%"><br></span></p><p><span style="font-size:12pt;line-height:115%">route[FROM_TRUNK]</span></p><p><span style="font-size:12pt;line-height:115%">force_send_socket("pu.bl.ic.ip
");</span></p><div></div><p></p>
<p><span style="font-size:12pt;line-height:115%">rtpproxy_manage("","pu.bl.ic.ip
");</span></p><div></div><p></p><div>$du="sip:ip.of.free.switch:5080";</div><div><br></div><div>route(RELAY);</div><div><br></div><div><br></div><div>then call is received to user and disconnected</div><div><br></div><div>on freeswitch console get some errors</div><div><br></div><div>[ERR] switch_core_media.c:7179 AUDIO RTP REPORTS ERROR: [Remote Address Error!] </div><div><div>[ERR] mod_sofia.c:2290 CODEC NEGOTIATION ERROR. SDP:</div><div>v=0</div><div>o=- 3679035755 3679035755 IN IP4 <span style="font-size:16px;line-height:18.4px">pu.bl.ic.ip</span><span style="font-size:16px;line-height:18.4px">pu.bl.ic.ip</span></div><div>s=pjmedia</div><div>b=AS:84</div><div>t=0 0</div><div>a=X-nat:0</div><div>m=audio 4167841678 RTP/AVP 123 8 0 101</div><div>c=IN IP4 <span style="font-size:16px;line-height:18.4px">pu.bl.ic.ip</span><span style="font-size:16px;line-height:18.4px">pu.bl.ic.ip</span></div><div>b=TIAS:64000</div><div>a=rtpmap:123 opus/48000/2</div><div>a=fmtp:123 maxplaybackrate=16000;sprop-maxcapturerate=16000;maxaveragebitrate=16000;useinbandfec=1</div><div>a=rtpmap:8 PCMA/8000</div><div>a=rtpmap:0 PCMU/8000</div><div>a=rtpmap:101 telephone-event/8000</div><div>a=fmtp:101 0-16</div><div>a=rtcp:4167941679</div><div>a=nortpproxy:yes</div><div>a=nortpproxy:yes</div></div><div><br></div><div><br></div><div>please advice me</div><div> thank you</div>
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