<HTML dir=ltr><HEAD>
<META http-equiv=Content-Type content="text/html; charset=unicode">
<META content="MSHTML 6.00.6001.18148" name=GENERATOR></HEAD>
<BODY>
<P><FONT face="Courier New" size=2>Hi,</FONT></P>
<P><FONT face="Courier New" size=2>I have a situation whit multiple proxy where ACK is not sent as I would expect. </FONT></P>
<P><FONT face="Courier New" size=2>if we look at the following "200 OK", I am expecting ACK to be sent to 1.1.1.1 but the "Asterisk PBX 1.6.0.6." is selecting 2.2.2.2 is this normal ?</FONT></P>
<P><FONT face="Courier New" size=2>Do I have to handle Record-Route differently ?</FONT></P>
<P> </P>
<P> </P>
<P><FONT face="Courier New" size=2>U 1.1.1.1:5060 -> 192.168.1.108:5060<BR>SIP/2.0 200 OK.<BR>Via: SIP/2.0/UDP 192.168.1.108:5060;received=74.56.45.88;branch=z9hG4bK2e975bf5;rport=5060.<BR>To: <sip:15141234567@osip.dev.com>;tag=as664de2c2.<BR>From: "15141234567" <sip:15141234567@192.168.1.108>;tag=as55bd7355.<BR>Call-ID: <A href="mailto:641cab3f73fa37a871818d1a70c4061b@192.168.1.108"><FONT face="Courier New" size=2>641cab3f73fa37a871818d1a70c4061b@192.168.1.108</FONT></A><FONT face="Courier New" size=2>.<BR>CSeq: 102 INVITE.<BR>Content-Type: application/sdp.<BR>Contact: <sip:15141234567@2.2.2.2:5060>.<BR>Content-Length: 241.<BR>Record-Route: <sip:1.1.1.1;lr=on;nat=yes>.<BR>User-Agent: Packetrino.<BR>Supported: replaces.<BR>Record-Route: <sip:2.2.2.2:5060;lr>.<BR>Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.</FONT></FONT></P>
<P><FONT face="Courier New" size=2></FONT> </P>
<P><FONT face="Courier New" size=2></FONT> </P>
<P><FONT face="Courier New" size=2></FONT> </P>
<P><FONT face="Courier New" size=2></FONT> </P>
<P><FONT face="Courier New" size=2>---------------------------------------------------------</FONT></P>
<P><FONT face="Courier New" size=2>complete SIP signaling</FONT></P>
<P><FONT face="Courier New" size=2>---------------------------------------------------------</FONT></P>
<P><FONT face="Courier New" size=2>#<BR>U 192.168.1.108:5060 -> 1.1.1.1:5060<BR>INVITE sip:15141234567@osip.dev.com SIP/2.0.<BR>Via: SIP/2.0/UDP 192.168.1.108:5060;branch=z9hG4bK2e975bf5;rport.<BR>Max-Forwards: 70.<BR>From: "15141234567" <sip:15141234567@192.168.1.108>;tag=as55bd7355.<BR>To: <sip:15141234567@osip.dev.com>.<BR>Contact: <sip:15141234567@192.168.1.108>.<BR>Call-ID: </FONT><A href="mailto:641cab3f73fa37a871818d1a70c4061b@192.168.1.108"><FONT face="Courier New" size=2>641cab3f73fa37a871818d1a70c4061b@192.168.1.108</FONT></A><FONT face="Courier New" size=2>.<BR>CSeq: 102 INVITE.<BR>User-Agent: Asterisk PBX 1.6.0.6.<BR>Date: Wed, 29 Apr 2009 15:38:18 GMT.<BR>Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.<BR>Supported: replaces, timer.<BR>Content-Type: application/sdp.<BR>Content-Length: 265.<BR>.<BR>v=0.<BR>o=root 1992389746 1992389746 IN IP4 192.168.1.108.<BR>s=Asterisk PBX 1.6.0.6.<BR>c=IN IP4 192.168.1.108.<BR>t=0 0.<BR>m=audio 11232 RTP/AVP 0 101.<BR>a=rtpmap:0 PCMU/8000.<BR>a=rtpmap:101 telephone-event/8000.<BR>a=fmtp:101 0-16.<BR>a=silenceSupp:off - - - -.<BR>a=ptime:20.<BR>a=sendrecv.</FONT></P>
<P><FONT face="Courier New" size=2>#<BR>U 1.1.1.1:5060 -> 192.168.1.108:5060<BR>SIP/2.0 100 Giving a try.<BR>Via: SIP/2.0/UDP 192.168.1.108:5060;branch=z9hG4bK2e975bf5;rport=5060;received=74.56.45.88.<BR>From: "15141234567" <sip:15141234567@192.168.1.108>;tag=as55bd7355.<BR>To: <sip:15141234567@osip.dev.com>.<BR>Call-ID: </FONT><A href="mailto:641cab3f73fa37a871818d1a70c4061b@192.168.1.108"><FONT face="Courier New" size=2>641cab3f73fa37a871818d1a70c4061b@192.168.1.108</FONT></A><FONT face="Courier New" size=2>.<BR>CSeq: 102 INVITE.<BR>Server: OpenSIPS (1.4.4-notls (x86_64/linux)).<BR>Content-Length: 0.<BR>.</FONT></P>
<P><FONT face="Courier New" size=2>#<BR>U 1.1.1.1:5060 -> 192.168.1.108:5060<BR>SIP/2.0 183 Session Progress.<BR>Via: SIP/2.0/UDP 192.168.1.108:5060;received=74.56.45.88;branch=z9hG4bK2e975bf5;rport=5060.<BR>To: <sip:15141234567@osip.dev.com>;tag=as664de2c2.<BR>From: "15141234567" <sip:15141234567@192.168.1.108>;tag=as55bd7355.<BR>Call-ID: </FONT><A href="mailto:641cab3f73fa37a871818d1a70c4061b@192.168.1.108"><FONT face="Courier New" size=2>641cab3f73fa37a871818d1a70c4061b@192.168.1.108</FONT></A><FONT face="Courier New" size=2>.<BR>CSeq: 102 INVITE.<BR>Content-Type: application/sdp.<BR>Contact: <sip:15141234567@2.2.2.2:5060>.<BR>Content-Length: 241.<BR>Record-Route: <sip:1.1.1.1;lr=on;nat=yes>.<BR>User-Agent: Packetrino.<BR>Supported: replaces.<BR>Record-Route: <sip:2.2.2.2:5060;lr>.<BR>Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.<BR>.<BR>v=0.<BR>o=root 29378 29378 IN IP4 64.2.142.160.<BR>s=session.<BR>c=IN IP4 1.1.1.1.<BR>t=0 0.<BR>m=audio 52528 RTP/AVP 0 101.<BR>a=rtpmap:0 PCMU/8000.<BR>a=rtpmap:101 telephone-event/8000.<BR>a=fmtp:101 0-16.<BR>a=silenceSupp:off - - - -.<BR>a=ptime:20.<BR>a=sendrecv.</FONT></P>
<P><FONT face="Courier New" size=2>#<BR>U 1.1.1.1:5060 -> 192.168.1.108:5060<BR>SIP/2.0 180 Ringing.<BR>Via: SIP/2.0/UDP 192.168.1.108:5060;received=74.56.45.88;branch=z9hG4bK2e975bf5;rport=5060.<BR>To: <sip:15141234567@osip.dev.com>;tag=as664de2c2.<BR>From: "15141234567" <sip:15141234567@192.168.1.108>;tag=as55bd7355.<BR>Call-ID: </FONT><A href="mailto:641cab3f73fa37a871818d1a70c4061b@192.168.1.108"><FONT face="Courier New" size=2>641cab3f73fa37a871818d1a70c4061b@192.168.1.108</FONT></A><FONT face="Courier New" size=2>.<BR>CSeq: 102 INVITE.<BR>Contact: <sip:15141234567@2.2.2.2:5060>.<BR>Content-Length: 0.<BR>Record-Route: <sip:1.1.1.1;lr=on;nat=yes>.<BR>User-Agent: Packetrino.<BR>Supported: replaces.<BR>Record-Route: <sip:2.2.2.2:5060;lr>.<BR>Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.<BR>.</FONT></P>
<P><FONT face="Courier New" size=2>#<BR>U 1.1.1.1:5060 -> 192.168.1.108:5060<BR>SIP/2.0 200 OK.<BR>Via: SIP/2.0/UDP 192.168.1.108:5060;received=74.56.45.88;branch=z9hG4bK2e975bf5;rport=5060.<BR>To: <sip:15141234567@osip.dev.com>;tag=as664de2c2.<BR>From: "15141234567" <sip:15141234567@192.168.1.108>;tag=as55bd7355.<BR>Call-ID: </FONT><A href="mailto:641cab3f73fa37a871818d1a70c4061b@192.168.1.108"><FONT face="Courier New" size=2>641cab3f73fa37a871818d1a70c4061b@192.168.1.108</FONT></A><FONT face="Courier New" size=2>.<BR>CSeq: 102 INVITE.<BR>Content-Type: application/sdp.<BR>Contact: <sip:15141234567@2.2.2.2:5060>.<BR>Content-Length: 241.<BR>Record-Route: <sip:1.1.1.1;lr=on;nat=yes>.<BR>User-Agent: Packetrino.<BR>Supported: replaces.<BR>Record-Route: <sip:2.2.2.2:5060;lr>.<BR>Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY.<BR>.<BR>v=0.<BR>o=root 29378 29379 IN IP4 64.2.142.160.<BR>s=session.<BR>c=IN IP4 1.1.1.1.<BR>t=0 0.<BR>m=audio 52528 RTP/AVP 0 101.<BR>a=rtpmap:0 PCMU/8000.<BR>a=rtpmap:101 telephone-event/8000.<BR>a=fmtp:101 0-16.<BR>a=silenceSupp:off - - - -.<BR>a=ptime:20.<BR>a=sendrecv.</FONT></P>
<P><FONT face="Courier New" size=2>#<BR>U 192.168.1.108:5060 -> 2.2.2.2:5060<BR>ACK sip:15141234567@2.2.2.2:5060 SIP/2.0.<BR>Via: SIP/2.0/UDP 192.168.1.108:5060;branch=z9hG4bK04335252;rport.<BR>Route: <sip:2.2.2.2:5060;lr>,<sip:1.1.1.1;lr=on;nat=yes>.<BR>Max-Forwards: 70.<BR>From: "15141234567" <sip:15141234567@192.168.1.108>;tag=as55bd7355.<BR>To: <sip:15141234567@osip.dev.com>;tag=as664de2c2.<BR>Contact: <sip:15141234567@192.168.1.108>.<BR>Call-ID: </FONT><A href="mailto:641cab3f73fa37a871818d1a70c4061b@192.168.1.108"><FONT face="Courier New" size=2>641cab3f73fa37a871818d1a70c4061b@192.168.1.108</FONT></A><FONT face="Courier New" size=2>.<BR>CSeq: 102 ACK.<BR>User-Agent: Asterisk PBX 1.6.0.6.<BR>Content-Length: 0.<BR>.<BR></FONT></P>
<DIV><FONT face="Courier New" color=#000000 size=2></FONT> </DIV></BODY></HTML>