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<p>Hello,</p>
<p>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...</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 20.08.20 12:25, sip user wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CALwUm-jZHz9aZ12r_zHPzgQM38GFpqxRs1XnBggOWHd3fY_VKg@mail.gmail.com">
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<div>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..</div>
<div><br>
</div>
<div>With ngrep I see that:</div>
<div><br>
</div>
<div>
<div>INVITE
<a class="moz-txt-link-freetext" href="sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940">sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940</a>
SIP/2.0.<br>
Record-Route: <a class="moz-txt-link-rfc2396E" href="sip:FQND_IP;r2=on;lr"><sip:FQND_IP;r2=on;lr></a>.<br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:FQND_IP:5061;transport=tls;r2=on;lr"><sip:FQND_IP:5061;transport=tls;r2=on;lr></a>.<br>
FROM: "Javier Gonz..lez
Mu..oz"<a class="moz-txt-link-rfc2396E" href="sip:+324@sip.pstnhub.microsoft.com:5061;user=phone"><sip:+324@sip.pstnhub.microsoft.com:5061;user=phone></a>;tag=c17bb1eb7f8649d4a89d8d4a876ac32b.<br>
TO: <a class="moz-txt-link-rfc2396E" href="sip:+34560@FQND:5061;user=phone"><sip:+34560@FQND:5061;user=phone></a>.<br>
CSEQ: 1 INVITE.<br>
CALL-ID: c1364913e582553a9a9c2544c3583b0a.<br>
MAX-FORWARDS: 69.<br>
Via: SIP/2.0/UDP
92.222.217.64;branch=z9hG4bK7bb5.0fbae76a37829205e04279f220a26af2.0;i=a1.<br>
VIA: SIP/2.0/TLS 52.114.76.76:5061;branch=z9hG4bKd216a55.<br>
RECORD-ROUTE:
<a class="moz-txt-link-rfc2396E" href="sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr"><sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr></a>.<br>
CONTACT:
<a class="moz-txt-link-rfc2396E" href="sip:api-du-a-euno.pstnhub.microsoft.com:443;x-i=b0b53fc5-76ef-4619-9a68-13e0a4eea92d;x-c=c1364913e582553a9a9c2544c3583b0a/d/8/6c25eb3789a14bf188ce6b05b5e27891"><sip:api-du-a-euno.pstnhub.microsoft.com:443;x-i=b0b53fc5-76ef-4619-9a68-13e0a4eea92d;x-c=c1364913e582553a9a9c2544c3583b0a/d/8/6c25eb3789a14bf188ce6b05b5e27891></a>.<br>
CONTENT-LENGTH: 1091.<br>
MIN-SE: 300.<br>
SUPPORTED: timer.<br>
USER-AGENT: Microsoft.PSTNHub.SIPProxy v.2020.7.31.1
i.EUNO.0.<br>
CONTENT-TYPE: application/sdp.<br>
ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY.<br>
P-ASSERTED-IDENTITY: <a class="moz-txt-link-rfc2396E" href="tel:+324"><tel:+324></a>,<a class="moz-txt-link-rfc2396E" href="sip:EMAIL"><sip:EMAIL></a>.<br>
PRIVACY: id.<br>
SESSION-EXPIRES: 3600.<br>
.<br>
v=0.<br>
o=- 165103 0 IN IP4 127.0.0.1.<br>
s=session.<br>
c=IN IP4 52.113.44.8.<br>
b=CT:10000000.<br>
t=0 0.<br>
m=audio 50452 RTP/SAVP 104 9 103 111 18 0 8 97 101 13 118.<br>
c=IN IP4 52.113.44.8.<br>
a=rtcp:50453.<br>
a=ice-ufrag:FZTb.<br>
a=ice-pwd:yD3P7nr+xNq0VYdv7xpB1F+Y.<br>
a=rtcp-mux.<br>
a=candidate:1 1 UDP 2130706431 52.113.44.8 50452 typ srflx
raddr 10.0.33.240 rport 50<br>
</div>
</div>
<div><br>
</div>
<div>U CLIENT_IP:55766 -> FQND_IP:5060 #2<br>
SIP/2.0 180 Ringing.<br>
Via: SIP/2.0/UDP
FQND_IP;branch=z9hG4bK7bb5.0fbae76a37829205e04279f220a26af2.0;i=a1.<br>
Via: SIP/2.0/TLS 52.114.76.76:5061;branch=z9hG4bKd216a55.<br>
Record-Route: <a class="moz-txt-link-rfc2396E" href="sip:FQND_IP;lr;r2=on"><sip:FQND_IP;lr;r2=on></a>.<br>
Record-Route: <a class="moz-txt-link-rfc2396E" href="sip:FQND_IP:5061;transport=tls;r2=on;lr"><sip:FQND_IP:5061;transport=tls;r2=on;lr></a>.<br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr"><sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr></a>.<br>
Contact:
<a class="moz-txt-link-rfc2396E" href="sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940"><sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940></a>.<br>
To: <a class="moz-txt-link-rfc2396E" href="sip:+34560@FQND:5061;user=phone"><sip:+34560@FQND:5061;user=phone></a>;tag=de4e6b45.<br>
From: "Javier Gonz..lez
Mu..oz"<a class="moz-txt-link-rfc2396E" href="sip:+324@sip.pstnhub.microsoft.com:5061;user=phone"><sip:+324@sip.pstnhub.microsoft.com:5061;user=phone></a>;tag=c17bb1eb7f8649d4a89d8d4a876ac32b.<br>
Call-ID: c1364913e582553a9a9c2544c3583b0a.<br>
CSeq: 1 INVITE.<br>
User-Agent: 3CXPhone 6.0.26523.0.<br>
Content-Length: 0.<br>
</div>
<div><br>
</div>
<div>U CLIENT_IP:55766 -> FQND_IP:5060 #3<br>
SIP/2.0 200 OK.<br>
Via: SIP/2.0/UDP
FQND_IP;branch=z9hG4bK7bb5.0fbae76a37829205e04279f220a26af2.0;i=a1.<br>
Via: SIP/2.0/TLS 52.114.76.76:5061;branch=z9hG4bKd216a55.<br>
Record-Route: <a class="moz-txt-link-rfc2396E" href="sip:FQND_IP;lr;r2=on"><sip:FQND_IP;lr;r2=on></a>.<br>
Record-Route: <a class="moz-txt-link-rfc2396E" href="sip:FQND_IP:5061;transport=tls;r2=on;lr"><sip:FQND_IP:5061;transport=tls;r2=on;lr></a>.<br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr"><sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr></a>.<br>
Contact:
<a class="moz-txt-link-rfc2396E" href="sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940"><sip:1005@CLIENT_IP:55766;transport=UDP;rinstance=d47edf336726e940></a>.<br>
To: <a class="moz-txt-link-rfc2396E" href="sip:+34560@FQND:5061;user=phone"><sip:+34560@FQND:5061;user=phone></a>;tag=de4e6b45.<br>
From: "Javier Gonz..lez
Mu..oz"<a class="moz-txt-link-rfc2396E" href="sip:+324@sip.pstnhub.microsoft.com:5061;user=phone"><sip:+324@sip.pstnhub.microsoft.com:5061;user=phone></a>;tag=c17bb1eb7f8649d4a89d8d4a876ac32b.<br>
Call-ID: c1364913e582553a9a9c2544c3583b0a.<br>
CSeq: 1 INVITE.<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE,
NOTIFY, REFER, INFO, MESSAGE.<br>
Content-Type: application/sdp.<br>
Supported: replaces.<br>
User-Agent: 3CXPhone 6.0.26523.0.<br>
Content-Length: 1067.<br>
.<br>
v=0.<br>
o=3cxVCE 324945090 117647850 IN IP4 .<br>
s=3cxVCE Audio Call.<br>
t=0 0.<br>
m=audio 0 RTP/SAVP 104 9 103 111 18 0 8 97 101 13 118.<br>
c=IN IP4 52.113.44.8.<br>
a=rtpmap:104 SILK/16000.<br>
a=rtpmap:9 G722/8000.<br>
a=rtpmap:103 SILK/8000.<br>
a=rtpmap:111 SIREN/16000.<br>
a=fmtp:111 bitrate=16000.<br>
a=rtpmap:18 G729/8000.<br>
a=fmtp:18 annexb=no.<br>
a=rtpmap:0 PCMU/8000.<br>
a=rtpmap:8 PCMA/8000.<br>
a=rtpmap:97 RED/8000.<br>
a=rtpmap:101 telephone-event/8000.<br>
a=fmtp:101 0-16.<br>
a=rtpmap:13 CN/8000.<br>
a=rtpmap:118 CN/16000.<br>
a=rtcp:50453.<br>
a=ice-ufrag:FZTb.<br>
a=ice-pwd:yD3P7nr+xNq0VYdv7xpB1F+Y.<br>
a=rtcp-mux.<br>
a=candidate:1 1 UDP 213<br>
</div>
<div><br>
</div>
<div>I never received ACK..</div>
<div><br>
</div>
<div>In my configuration:</div>
<div><br>
</div>
<div>Kamailio.cfg:</div>
<div><br>
</div>
<div>#!KAMAILIO<br>
#!define WITH_TLS</div>
<div><br>
</div>
<div>event_route[tm:local-request] {<br>
<br>
if(is_method("OPTIONS") && $ru =~ "<a
href="http://pstnhub.microsoft.com" target="_blank"
moz-do-not-send="true">pstnhub.microsoft.com</a>") {<br>
append_hf("Contact:
<a class="moz-txt-link-rfc2396E" href="sip:FQND:5061;transport=tls"><sip:FQND:5061;transport=tls></a>\r\n");<br>
}<br>
xlog("L_INFO", "Sent out tm request: $mb\n");<br>
}</div>
<div><br>
</div>
<div>request_route{</div>
<div><br>
</div>
<div> remove_hf("Route");<br>
if (is_method("INVITE|SUBSCRIBE")) {<br>
xlog("L_INFO","$fU is trying to call to $rU
con valores $tu\n");<br>
$rU="1005";<br>
}</div>
<div>}</div>
<div><br>
</div>
<div>What I'm doing wrong?</div>
<div><br>
</div>
<div>I don't understand why not received ACK..</div>
<div><br>
</div>
<div>Could anyone help me?</div>
<div><br>
</div>
<div>Thanks</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
Kamailio (SER) - Users Mailing List
<a class="moz-txt-link-abbreviated" href="mailto:sr-users@lists.kamailio.org">sr-users@lists.kamailio.org</a>
<a class="moz-txt-link-freetext" href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a>
</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Funding: <a class="moz-txt-link-freetext" href="https://www.paypal.me/dcmierla">https://www.paypal.me/dcmierla</a></pre>
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