<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:14048002020@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: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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:14048002020@182.176.103.109:34989;rinstance=f188b7fee3e3777f;transport=UDP SIP/2.0<br>Record-Route: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<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: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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:14048002020@182.176.103.109:34989;rinstance=f188b7fee3e3777f;transport=UDP SIP/2.0<br>Record-Route: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<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: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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://sip:14048002020@182.176.103.109:34989">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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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://sip:14048002020@182.176.103.109:34989">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: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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://sip:14048002020@182.176.103.109:34989">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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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://sip:14048002020@182.176.103.109:34989">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: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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://sip:14048002020@182.176.103.109:34989">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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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://sip:14048002020@182.176.103.109:34989">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: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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://sip:14048002020@182.176.103.109:34989">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: &lt;sip:45.56.70.29:6060;lr;ftag=8066dc24;did=974.5f8dfee6&gt;<br>Contact: &lt;sip:14048002010@182.176.103.109:34512;transport=UDP&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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: &lt;<a href="http://sip:14048002020@182.176.103.109:34989">sip:14048002020@182.176.103.109:34989</a>&gt;<br>To: &lt;sip:14048002020@45.56.70.29:6060;transport=UDP&gt;;tag=ab2db826<br>From: &lt;sip:14048002010@45.56.70.29:6060;transport=UDP&gt;;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>