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<p class="MsoNormal" style="text-autospace:none">The following is from the logfile showing a successful call<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">##### Call 1 - Normal #####<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:15:52 kamailio rtpengine[22145]: [1449147586-14407-219@BJC.BGI.B.BAF port 47732] Confirmed peer
address as 172.16.52.4:18678<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:15:52 kamailio rtpengine[22145]: [1449147586-14407-219@BJC.BGI.B.BAF port 47742] Confirmed peer
address as 86.188.176.25:49570<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:15:54 kamailio rtpengine[22145]: Got valid command from 127.0.0.1:42444: offer - { "sdp": "v=0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">o=TimDesk1 8000 8000 IN IP4 192.168.1.105<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">s=SIP Call<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 192.168.1.105<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">t=0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">m=audio 12508 RTP/SAVP 8 13 0 9 2 101<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=sendrecv<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:8 PCMA/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ptime:20<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:13 CN/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:0 PCMU/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:9 G722/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:2 G726-32/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:101 telephone-event/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=fmtp:101 0-15<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:juFBDXlbHNk9v4q7MZgFyBeBueoCqrqYI+6B4NX6|2^32<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:zGPcDnBVaYwupku4YXxQZkVo6P5S6qkMgsz7BKzQ|2^32<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">", "direction": [ "external", "internal" ], "replace": [ "origin", "session-connection" ], "transport-protocol":
"RTP/AVP", "call-id": "<a href="mailto:1251269203-14407-220@BJC.BGI.B.BAF">1251269203-14407-220@BJC.BGI.B.BAF</a>", "received-from": [ "IP4", "86.188.176.25" ], "from-tag": "822158480", "command": "offer" }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:15:54 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF] Creating new call<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:15:54 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF] Opened ports 47752..47753
for media relay<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:15:54 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF] Opened ports 47768..47769
for media relay<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:15:54 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF] Returning to SIP proxy:
d3:sdp553:v=0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">o=TimDesk1 8000 8000 IN IP4 172.16.52.71<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">s=SIP Call<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 172.16.52.71<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">t=0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-lite<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">m=audio 47752 RTP/AVP 8 13 0 9 2 101<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:8 PCMA/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ptime:20<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:13 CN/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:0 PCMU/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:9 G722/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:2 G726-32/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:101 telephone-event/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=fmtp:101 0-15<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=sendrecv<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtcp:47753<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-ufrag:0iPdqfhF<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-pwd:jcloLJi39nobxVX7HtpKtTMt9zFA<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=candidate:hgovvroVet3HALus 1 UDP 2130706431 172.16.52.71 47752 typ host<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=candidate:hgovvroVet3HALus 2 UDP 2130706430 172.16.52.71 47753 typ host<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">6:result2:oke<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:16:00 kamailio rtpengine[22145]: Got valid command from 127.0.0.1:37264: answer - { "sdp": "v=0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">o=CiscoSystemsSIP-GW-UserAgent 556 4215 IN IP4 172.16.52.4<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">s=SIP Call<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 172.16.52.4<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">t=0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">m=audio 18682 RTP/AVP 8 101<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 172.16.52.4<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:8 PCMA/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:101 telephone-event/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=fmtp:101 0-15<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ptime:20<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">", "direction": [ "internal", "external" ], "replace": [ "origin", "session-connection" ], "transport-protocol":
"RTP/SAVP", "call-id": "<a href="mailto:1251269203-14407-220@BJC.BGI.B.BAF">1251269203-14407-220@BJC.BGI.B.BAF</a>", "received-from": [ "IP4", "172.16.52.4" ], "from-tag": "822158480", "to-tag": "9019F813-2671", "command": "answer" }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:16:00 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF] Returning to SIP proxy:
d3:sdp586:v=0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">o=CiscoSystemsSIP-GW-UserAgent 556 4215 IN IP4 123.123.123.123<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">s=SIP Call<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 123.123.123.123<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">t=0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-lite<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">m=audio 47768 RTP/SAVP 8 101<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 123.123.123.123<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:8 PCMA/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:101 telephone-event/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=fmtp:101 0-15<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ptime:20<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=sendrecv<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtcp:47769<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:s8Q/XEjCiBU7AA7yo5P9KFYhiZrcs1RPUpV/cArM<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-ufrag:ILsVPyrj<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-pwd:nE1g27xxJH0rzWwamuxbAtHid9b2<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=candidate:TUErwQDNDzRhCQkj 1 UDP 2130706431 123.123.123.123 47768 typ host<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=candidate:TUErwQDNDzRhCQkj 2 UDP 2130706430 123.123.123.123 47769 typ host<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">6:result2:oke<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:16:02 kamailio rtpengine[22145]: Got valid command from 127.0.0.1:39817: answer - { "sdp": "v=0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">o=CiscoSystemsSIP-GW-UserAgent 556 4215 IN IP4 172.16.52.4<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">s=SIP Call<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 172.16.52.4<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">t=0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">m=audio 18682 RTP/AVP 8 101<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 172.16.52.4<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:8 PCMA/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:101 telephone-event/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=fmtp:101 0-15<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ptime:20<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">", "direction": [ "internal", "external" ], "replace": [ "origin", "session-connection" ], "transport-protocol":
"RTP/SAVP", "call-id": "<a href="mailto:1251269203-14407-220@BJC.BGI.B.BAF">1251269203-14407-220@BJC.BGI.B.BAF</a>", "received-from": [ "IP4", "172.16.52.4" ], "from-tag": "822158480", "to-tag": "9019F813-2671", "command": "answer" }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:16:02 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF] Returning to SIP proxy:
d3:sdp586:v=0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">o=CiscoSystemsSIP-GW-UserAgent 556 4215 IN IP4 123.123.123.123<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">s=SIP Call<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 123.123.123.123<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">t=0 0<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-lite<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">m=audio 47768 RTP/SAVP 8 101<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">c=IN IP4 123.123.123.123<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:8 PCMA/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtpmap:101 telephone-event/8000<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=fmtp:101 0-15<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ptime:20<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=sendrecv<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=rtcp:47769<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:s8Q/XEjCiBU7AA7yo5P9KFYhiZrcs1RPUpV/cArM<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-ufrag:ILsVPyrj<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=ice-pwd:nE1g27xxJH0rzWwamuxbAtHid9b2<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=candidate:TUErwQDNDzRhCQkj 1 UDP 2130706431 123.123.123.123 47768 typ host<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">a=candidate:TUErwQDNDzRhCQkj 2 UDP 2130706430 123.123.123.123 47769 typ host<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">6:result2:oke<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:16:06 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF port 47752] Confirmed peer
address as 172.16.52.4:18682<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:16:06 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF port 47768] Confirmed peer
address as 86.188.176.25:12508<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:16:06 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF port 47768] No support for
kernel packet forwarding available<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB">Feb 6 16:16:06 kamailio rtpengine[22145]: [1251269203-14407-220@BJC.BGI.B.BAF port 47752] No support for
kernel packet forwarding available<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:8.0pt;font-family:"Candara",sans-serif;color:#44546A;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:EN-GB">From:</span></b><span lang="EN-US" style="mso-fareast-language:EN-GB"> sr-users [mailto:sr-users-bounces@lists.sip-router.org]
<b>On Behalf Of </b>Tim Chubb<br>
<b>Sent:</b> 07 February 2015 08:10<br>
<b>To:</b> Kamailio (SER) - Users Mailing List<br>
<b>Subject:</b> [SR-Users] RTPEngine Intermittent One Way Audio Issue SRTP => RTP<o:p></o:p></span></p>
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</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">Hi,<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">I am currently experiencing an intermittent one way audio issue, when using RTPEngine and proxying between srtp and rtp. There is no apparent pattern, I have managed to repeat the on the 7<sup>th</sup>, 23<sup>rd</sup>,
and 63<sup>rd</sup> calls to a test number, where upon connection only audio in the RTP => SRTP direction was working. All other test calls worked as normal. Digging through the RTPEngine log file the only abnormalities I can see are: Discarded invalid SRTP
packet: authentication failed entries on the calls that had the one way audio issue.
<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none">What could be causing this?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Tim.<o:p></o:p></p>
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