[SR-Users] Kamailio drop calls with Teams
Daniel-Constantin Mierla
miconda at gmail.com
Tue Aug 25 15:32:55 CEST 2020
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 at 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:+324 at sip.pstnhub.microsoft.com:5061;user=phone>;tag=c17bb1eb7f8649d4a89d8d4a876ac32b.
> TO: <sip:+34560 at 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 at CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940>.
> To: <sip:+34560 at FQND:5061;user=phone>;tag=de4e6b45.
> From: "Javier Gonz..lez
> Mu..oz"<sip:+324 at sip.pstnhub.microsoft.com: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 at CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940>.
> To: <sip:+34560 at FQND:5061;user=phone>;tag=de4e6b45.
> From: "Javier Gonz..lez
> Mu..oz"<sip:+324 at sip.pstnhub.microsoft.com: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
> sr-users at lists.kamailio.org
> 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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