Hello, run with debug=3 in kamailio.cfg and see if the ACK comes to Kamailio, if yes, then some routing issue in kamailio.cfg. If does not come, you will have to check the headers to see if MS Teams expects something else there, typically is about Record-Route domains...
Cheers, Daniel On 20.08.20 12:25, sip user wrote: > Hi, I'm connecting Teams with kamailio server. From Kamailio to teams > I have no problems, but from teams to Kamailio yes. Drop the call.. > > With ngrep I see that: > > INVITE > sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940 SIP/2.0. > Record-Route: <sip:FQND_IP;r2=on;lr>. > Record-Route: <sip:FQND_IP:5061;transport=tls;r2=on;lr>. > FROM: "Javier Gonz..lez > Mu..oz"<sip:[email protected]:5061;user=phone>;tag=c17bb1eb7f8649d4a89d8d4a876ac32b. > TO: <sip:+34560@FQND:5061;user=phone>. > CSEQ: 1 INVITE. > CALL-ID: c1364913e582553a9a9c2544c3583b0a. > MAX-FORWARDS: 69. > Via: SIP/2.0/UDP > 92.222.217.64;branch=z9hG4bK7bb5.0fbae76a37829205e04279f220a26af2.0;i=a1. > VIA: SIP/2.0/TLS 52.114.76.76:5061;branch=z9hG4bKd216a55. > RECORD-ROUTE: > <sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr>. > CONTACT: > <sip:api-du-a-euno.pstnhub.microsoft.com:443;x-i=b0b53fc5-76ef-4619-9a68-13e0a4eea92d;x-c=c1364913e582553a9a9c2544c3583b0a/d/8/6c25eb3789a14bf188ce6b05b5e27891>. > CONTENT-LENGTH: 1091. > MIN-SE: 300. > SUPPORTED: timer. > USER-AGENT: Microsoft.PSTNHub.SIPProxy v.2020.7.31.1 i.EUNO.0. > CONTENT-TYPE: application/sdp. > ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY. > P-ASSERTED-IDENTITY: <tel:+324>,<sip:EMAIL>. > PRIVACY: id. > SESSION-EXPIRES: 3600. > . > v=0. > o=- 165103 0 IN IP4 127.0.0.1. > s=session. > c=IN IP4 52.113.44.8. > b=CT:10000000. > t=0 0. > m=audio 50452 RTP/SAVP 104 9 103 111 18 0 8 97 101 13 118. > c=IN IP4 52.113.44.8. > a=rtcp:50453. > a=ice-ufrag:FZTb. > a=ice-pwd:yD3P7nr+xNq0VYdv7xpB1F+Y. > a=rtcp-mux. > a=candidate:1 1 UDP 2130706431 52.113.44.8 50452 typ srflx raddr > 10.0.33.240 rport 50 > > U CLIENT_IP:55766 -> FQND_IP:5060 #2 > SIP/2.0 180 Ringing. > Via: SIP/2.0/UDP > FQND_IP;branch=z9hG4bK7bb5.0fbae76a37829205e04279f220a26af2.0;i=a1. > Via: SIP/2.0/TLS 52.114.76.76:5061;branch=z9hG4bKd216a55. > Record-Route: <sip:FQND_IP;lr;r2=on>. > Record-Route: <sip:FQND_IP:5061;transport=tls;r2=on;lr>. > Record-Route: > <sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr>. > Contact: > <sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940>. > To: <sip:+34560@FQND:5061;user=phone>;tag=de4e6b45. > From: "Javier Gonz..lez > Mu..oz"<sip:[email protected]:5061;user=phone>;tag=c17bb1eb7f8649d4a89d8d4a876ac32b. > Call-ID: c1364913e582553a9a9c2544c3583b0a. > CSeq: 1 INVITE. > User-Agent: 3CXPhone 6.0.26523.0. > Content-Length: 0. > > U CLIENT_IP:55766 -> FQND_IP:5060 #3 > SIP/2.0 200 OK. > Via: SIP/2.0/UDP > FQND_IP;branch=z9hG4bK7bb5.0fbae76a37829205e04279f220a26af2.0;i=a1. > Via: SIP/2.0/TLS 52.114.76.76:5061;branch=z9hG4bKd216a55. > Record-Route: <sip:FQND_IP;lr;r2=on>. > Record-Route: <sip:FQND_IP:5061;transport=tls;r2=on;lr>. > Record-Route: > <sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr>. > Contact: > <sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940>. > To: <sip:+34560@FQND:5061;user=phone>;tag=de4e6b45. > From: "Javier Gonz..lez > Mu..oz"<sip:[email protected]:5061;user=phone>;tag=c17bb1eb7f8649d4a89d8d4a876ac32b. > Call-ID: c1364913e582553a9a9c2544c3583b0a. > CSeq: 1 INVITE. > Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, > REFER, INFO, MESSAGE. > Content-Type: application/sdp. > Supported: replaces. > User-Agent: 3CXPhone 6.0.26523.0. > Content-Length: 1067. > . > v=0. > o=3cxVCE 324945090 117647850 IN IP4 . > s=3cxVCE Audio Call. > t=0 0. > m=audio 0 RTP/SAVP 104 9 103 111 18 0 8 97 101 13 118. > c=IN IP4 52.113.44.8. > a=rtpmap:104 SILK/16000. > a=rtpmap:9 G722/8000. > a=rtpmap:103 SILK/8000. > a=rtpmap:111 SIREN/16000. > a=fmtp:111 bitrate=16000. > a=rtpmap:18 G729/8000. > a=fmtp:18 annexb=no. > a=rtpmap:0 PCMU/8000. > a=rtpmap:8 PCMA/8000. > a=rtpmap:97 RED/8000. > a=rtpmap:101 telephone-event/8000. > a=fmtp:101 0-16. > a=rtpmap:13 CN/8000. > a=rtpmap:118 CN/16000. > a=rtcp:50453. > a=ice-ufrag:FZTb. > a=ice-pwd:yD3P7nr+xNq0VYdv7xpB1F+Y. > a=rtcp-mux. > a=candidate:1 1 UDP 213 > > I never received ACK.. > > In my configuration: > > Kamailio.cfg: > > #!KAMAILIO > #!define WITH_TLS > > event_route[tm:local-request] { > > if(is_method("OPTIONS") && $ru =~ "pstnhub.microsoft.com > <http://pstnhub.microsoft.com>") { > append_hf("Contact: <sip:FQND:5061;transport=tls>\r\n"); > } > xlog("L_INFO", "Sent out tm request: $mb\n"); > } > > request_route{ > > remove_hf("Route"); > if (is_method("INVITE|SUBSCRIBE")) { > xlog("L_INFO","$fU is trying to call to $rU con > valores $tu\n"); > $rU="1005"; > } > } > > What I'm doing wrong? > > I don't understand why not received ACK.. > > Could anyone help me? > > Thanks > > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Funding: https://www.paypal.me/dcmierla
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