<div dir="ltr"><div><div>Thanks for replying to this query. <br><br></div>Actual sip trace file is attached with this mail. Please have a look.<br><br></div>Regards.<br><div><div><div><div><br><br></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 8 September 2015 at 12:20, Hamid Hashmi <span dir="ltr"><<a href="mailto:hamid2kviii@hotmail.com" target="_blank">hamid2kviii@hotmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr">What is the time difference between duplicate SIP messages ? It happens due to network latency. <div><br></div><div>Regards</div><div>Hamid R. Hashmi<br><br><div><hr>Date: Mon, 7 Sep 2015 21:19:16 +0500<br>From: <a href="mailto:aqsyounas@gmail.com" target="_blank">aqsyounas@gmail.com</a><br>To: <a href="mailto:users@lists.opensips.org" target="_blank">users@lists.opensips.org</a><br>Subject: [OpenSIPS-Users] Multiple invite and bye for a single a call<div><div class="h5"><br><br><div dir="ltr"><div><div>Hi, users.<br><br></div>I have two softphone register to opensips from same network. When I call from one phone to another I see multiple invites and 200, bye for a single call.<br>Where is call sip trace.<br><br>INVITE sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP SIP/2.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Max-Forwards: 70<br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP><br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE<br>Content-Type: application/sdp<br>Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri<br>User-Agent: Z 3.7.30891 r30851<br>Allow-Events: presence, kpml<br>Content-Length: 245<br><br>v=0<br>o=Z 0 0 IN IP4 182.176.103.109<br>s=Z<br>c=IN IP4 182.176.103.109<br>t=0 0<br>m=audio 8000 RTP/AVP 3 110 8 0 97 101<br>a=rtpmap:110 speex/8000<br>a=rtpmap:97 iLBC/8000<br>a=fmtp:97 mode=30<br>a=rtpmap:101 telephone-event/8000<br>a=fmtp:101 0-16<br>a=sendrecv<br><br><br>SIP/2.0 100 Giving a try<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP><br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Server: OpenSIPS (1.11.3-notls (x86_64/linux))<br>Content-Length: 0<br><br>INVITE sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@182.176.103.109:34989;rinstance=f188b7fee3e3777f;transport=UDP SIP/2.0<br>Record-Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Max-Forwards: 69<br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP><br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE<br>Content-Type: application/sdp<br>Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri<br>User-Agent: Z 3.7.30891 r30851<br>Allow-Events: presence, kpml<br>Content-Length: 245<br><br>v=0<br>o=Z 0 0 IN IP4 182.176.103.109<br>s=Z<br>c=IN IP4 182.176.103.109<br>t=0 0<br>m=audio 8000 RTP/AVP 3 110 8 0 97 101<br>a=rtpmap:110 speex/8000<br>a=rtpmap:97 iLBC/8000<br>a=fmtp:97 mode=30<br>a=rtpmap:101 telephone-event/8000<br>a=fmtp:101 0-16<br>a=sendrecv<br><br>INVITE sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@182.176.103.109:34989;rinstance=f188b7fee3e3777f;transport=UDP SIP/2.0<br>Record-Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Max-Forwards: 69<br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP><br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE<br>Content-Type: application/sdp<br>Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri<br>User-Agent: Z 3.7.30891 r30851<br>Allow-Events: presence, kpml<br>Content-Length: 245<br><br>v=0<br>o=Z 0 0 IN IP4 182.176.103.109<br>s=Z<br>c=IN IP4 182.176.103.109<br>t=0 0<br>m=audio 8000 RTP/AVP 3 110 8 0 97 101<br>a=rtpmap:110 speex/8000<br>a=rtpmap:97 iLBC/8000<br>a=fmtp:97 mode=30<br>a=rtpmap:101 telephone-event/8000<br>a=fmtp:101 0-16<br>a=sendrecv<br><br><br>SIP/2.0 100 Trying<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP><br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Content-Length: 0<br><br>SIP/2.0 100 Trying<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP><br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Content-Length: 0<br><br>SIP/2.0 180 Ringing<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Record-Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>User-Agent: Z 3.8.31438 r31441<br>Content-Length: 0<br><br>SIP/2.0 180 Ringing<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Record-Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>User-Agent: Z 3.8.31438 r31441<br>Content-Length: 0<br><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Record-Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE<br>Content-Type: application/sdp<br>Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri<br>User-Agent: Z 3.8.31438 r31441<br>Allow-Events: presence, kpml<br>Content-Length: 245<br><br>v=0<br>o=Z 0 3 IN IP4 182.176.103.109<br>s=Z<br>c=IN IP4 182.176.103.109<br>t=0 0<br>m=audio 8001 RTP/AVP 3 110 8 0 97 101<br>a=rtpmap:110 speex/8000<br>a=rtpmap:97 iLBC/8000<br>a=fmtp:97 mode=30<br>a=rtpmap:101 telephone-event/8000<br>a=fmtp:101 0-16<br>a=sendrecv<br><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Record-Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE<br>Content-Type: application/sdp<br>Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri<br>User-Agent: Z 3.8.31438 r31441<br>Allow-Events: presence, kpml<br>Content-Length: 245<br><br>v=0<br>o=Z 0 3 IN IP4 182.176.103.109<br>s=Z<br>c=IN IP4 182.176.103.109<br>t=0 0<br>m=audio 8001 RTP/AVP 3 110 8 0 97 101<br>a=rtpmap:110 speex/8000<br>a=rtpmap:97 iLBC/8000<br>a=fmtp:97 mode=30<br>a=rtpmap:101 telephone-event/8000<br>a=fmtp:101 0-16<br>a=sendrecv<br><br>ACK <a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a> SIP/2.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---143ec2662caf0465<br>Max-Forwards: 70<br>Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 ACK<br>User-Agent: Z 3.7.30891 r30851<br>Content-Length: 0<br><br>ACK <a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a> SIP/2.0<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.2<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---143ec2662caf0465<br>Max-Forwards: 69<br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 ACK<br>User-Agent: Z 3.7.30891 r30851<br>Content-Length: 0<br><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Record-Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE<br>Content-Type: application/sdp<br>Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri<br>User-Agent: Z 3.8.31438 r31441<br>Allow-Events: presence, kpml<br>Content-Length: 245<br><br>v=0<br>o=Z 0 3 IN IP4 182.176.103.109<br>s=Z<br>c=IN IP4 182.176.103.109<br>t=0 0<br>m=audio 8001 RTP/AVP 3 110 8 0 97 101<br>a=rtpmap:110 speex/8000<br>a=rtpmap:97 iLBC/8000<br>a=fmtp:97 mode=30<br>a=rtpmap:101 telephone-event/8000<br>a=fmtp:101 0-16<br>a=sendrecv<br><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---409b5f11d8ba8af3<br>Record-Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 INVITE<br>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE<br>Content-Type: application/sdp<br>Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri<br>User-Agent: Z 3.8.31438 r31441<br>Allow-Events: presence, kpml<br>Content-Length: 245<br><br>v=0<br>o=Z 0 3 IN IP4 182.176.103.109<br>s=Z<br>c=IN IP4 182.176.103.109<br>t=0 0<br>m=audio 8001 RTP/AVP 3 110 8 0 97 101<br>a=rtpmap:110 speex/8000<br>a=rtpmap:97 iLBC/8000<br>a=fmtp:97 mode=30<br>a=rtpmap:101 telephone-event/8000<br>a=fmtp:101 0-16<br>a=sendrecv<br><br>ACK <a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a> SIP/2.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---143ec2662caf0465<br>Max-Forwards: 70<br>Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 ACK<br>User-Agent: Z 3.7.30891 r30851<br>Content-Length: 0<br><br>ACK <a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a> SIP/2.0<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bK0b4b.4d77b6b1.2<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---143ec2662caf0465<br>Max-Forwards: 69<br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 1 ACK<br>User-Agent: Z 3.7.30891 r30851<br>Content-Length: 0<br><br>BYE <a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a> SIP/2.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---ef537d3eeab5a083<br>Max-Forwards: 70<br>Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 2 BYE<br>User-Agent: Z 3.7.30891 r30851<br>Content-Length: 0<br><br>BYE <a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a> SIP/2.0<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bKda4b.28b4b333.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---ef537d3eeab5a083<br>Max-Forwards: 69<br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 2 BYE<br>User-Agent: Z 3.7.30891 r30851<br>Content-Length: 0<br><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 45.56.70.29:6060;branch=z9hG4bKda4b.28b4b333.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---ef537d3eeab5a083<br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 2 BYE<br>User-Agent: Z 3.8.31438 r31441<br>Content-Length: 0<br><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---ef537d3eeab5a083<br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 2 BYE<br>User-Agent: Z 3.8.31438 r31441<br>Content-Length: 0<br><br>BYE <a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a> SIP/2.0<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---ef537d3eeab5a083<br>Max-Forwards: 70<br>Route: <sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6><br>Contact: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@182.176.103.109:34512;transport=UDP><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 2 BYE<br>User-Agent: Z 3.7.30891 r30851<br>Content-Length: 0<br><br>SIP/2.0 200 OK<br>Via: SIP/2.0/UDP 182.176.103.109:34512;branch=z9hG4bK-524287-1---ef537d3eeab5a083<br>Contact: <<a href="http://182.176.103.109:34989" target="_blank">sip:14048002020@182.176.103.109:34989</a>><br>To: <sip:<a href="tel:14048002020" value="+14048002020" target="_blank">14048002020</a>@45.56.70.29:6060;transport=UDP>;tag=ab2db826<br>From: <sip:<a href="tel:14048002010" value="+14048002010" target="_blank">14048002010</a>@45.56.70.29:6060;transport=UDP>;tag=8066dc24<br>Call-ID: Xhj8khX7e_acyeCyrYIELw..<br>CSeq: 2 BYE<br>User-Agent: Z 3.8.31438 r31441<br>Content-Length: 0<br><br><br><br></div><div>Why there are unnecessary invite, 200 and bye being forward by opensisp? <br><br></div><div> t_check_trans() is used to stop duplicate requests. <br><br></div><div>Best Regards.<br></div><div><div></div></div></div>
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<br></blockquote></div><br></div>