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Hi,<br>
<br>
Maybe MS Teams do not like "Record-Route" header in your SIP 200OK?<br>
<br>
Not long ago I had such a problem (no ACK after proper 200 OK) with
a large Dutch provider of SIP trunks.<br>
<br>
They told me they did not tolerate Record-Route... for security
reasons. No further explanation ;)<br>
<br>
Best regards,<br>
Konrad<br>
<br>
<br>
<div class="moz-cite-prefix">W dniu 11.02.2021 o 18:47, Pepelux
pisze:<br>
</div>
<blockquote type="cite"
cite="mid:CA+W_FKw9+RCuvk8hZ9=pKbBCSKeBnrA8MT1wU-TJSvtJVAztgg@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">If it can help you ... this is a working example:
<div><br>
</div>
<div>tag: snd<br>
pid: 19012<br>
process: 1<br>
time: 1612951019.957348<br>
date: Wed Feb 10 10:56:59 2021<br>
proto: tls ipv4<br>
srcip: SBC-IP-ADDR<br>
srcport: 5061 <br>
dstip: 52.114.76.76<br>
dstport: 5061<br>
~~~~~~~~~~~~~~~~~~~~<br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/TLS 52.114.76.76:5061;branch=z9hG4bK9984dd75<br>
Record-Route: <a class="moz-txt-link-rfc2396E" href="sip:SBC-DNS-DOMAIN:5060;r2=on;lr"><sip:SBC-DNS-DOMAIN:5060;r2=on;lr></a><br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:SBC-DNS-DOMAIN:5061;transport=tls;r2=on;lr"><sip:SBC-DNS-DOMAIN: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>
From:
Pepelux<a class="moz-txt-link-rfc2396E" href="sip:+YYYYYYYYYYY@sip.pstnhub.microsoft.com:5061;user=phone"><sip:+YYYYYYYYYYY@sip.pstnhub.microsoft.com:5061;user=phone></a>;tag=20cc826cdb36430089baeefcaa846f4a<br>
To:
<a class="moz-txt-link-rfc2396E" href="sip:+XXXXXXXXXXX@SBC-DNS-DOMAIN:5061;user=phone"><sip:+XXXXXXXXXXX@SBC-DNS-DOMAIN:5061;user=phone></a>;tag=as075f399f<br>
Call-ID: b81c3635f25b55a8b6aa2d4943624a16<br>
CSeq: 1 INVITE<br>
Server: Asterisk PBX<br>
Allow:sINVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY,
INFO, PUBLISH, MESSAGE<br>
Supported: replaces<br>
Contact: <a class="moz-txt-link-rfc2396E" href="sip:+XXXXXXXXXXX@ASTERISK-IP-ADDR:5060"><sip:+XXXXXXXXXXX@ASTERISK-IP-ADDR:5060></a><br>
Content-Type: application/sdp<br>
Content-Length: 614<br>
<br>
v=0<br>
o=root 794961255 794961255 IN IP4 SBC-IP-ADDR<br>
s=Asterisk PBX<br>
c=IN IP4 SBC-IP-ADDR<br>
t=0 0<br>
m=audio 36834 RTP/SAVP 0 8 101<br>
a=maxptime:150<br>
a=mid:1<br>
a=rtpmap:0 PCMU/8000<br>
a=rtpmap:8 PCMA/8000<br>
a=rtpmap:101 telephone-event/8000<br>
a=fmtp:101 0-16<br>
a=sendrecv<br>
a=rtcp:36835<br>
a=crypto:1 AES_CM_128_HMAC_SHA1_80
inline:iPGdIbVhkYq+7b4QU7selA9ymifeEN07VTVSfhmR<br>
a=ptime:20<br>
a=ice-ufrag:y9FpiQul<br>
a=ice-pwd:IBAulXNNVx2fqpFE1K9BzLYbuG<br>
a=candidate:MLkUNexgYqowLxtY 1 UDP 2130706431 SBC-IP-ADDR
36834 typ host<br>
a=candidate:MLkUNexgYqowLxtY 2 UDP 2130706430 SBC-IP-ADDR
36835 typ host<br>
</div>
<div><br>
</div>
<div>Cheers</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, 11 Feb 2021 at 14:28,
Phillman25 Kyriacou <<a href="mailto:phillman25@gmail.com"
moz-do-not-send="true">phillman25@gmail.com</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hi Guys
<div><br>
</div>
<div>Thanks for all your recommendations.</div>
<div><br>
</div>
<div>I did the change and rr headers only show the fqdn of
Kamailio as you can see below in the 200 OK sent back to
MS Teams, however still the same issue no ACK.</div>
<div><br>
</div>
<div>||||||||||||||||||||<br>
====================<br>
tag: snd<br>
pid: 31232<br>
process: 6<br>
time: 1613047849.768857<br>
date: Thu Feb 11 14:50:49 2021<br>
proto: tls ipv4<br>
srcip: 82.102.42.58<br>
srcport: 5061<br>
dstip: 52.114.132.46<br>
dstport: 5061<br>
~~~~~~~~~~~~~~~~~~~~<br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/TLS 52.114.132.46:5061;branch=z9hG4bK4f5c9b66<br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:sbc.intelligentsupport.eu:5060;ftag=dcea3c9546914ff8826afca13260da1c;lr=on"><sip:sbc.intelligentsupport.eu:5060;ftag=dcea3c9546914ff8826afca13260da1c;lr=on></a><br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:sbc.intelligentsupport.eu:5061;transport=tls;ftag=dcea3c9546914ff8826afca13260da1c;lr=on"><sip:sbc.intelligentsupport.eu:5061;transport=tls;ftag=dcea3c9546914ff8826afca13260da1c;lr=on></a><br>
Record-Route:
<a class="moz-txt-link-rfc2396E" href="sip:sip-du-a-us.pstnhub.microsoft.com:5061;transport=tls;lr"><sip:sip-du-a-us.pstnhub.microsoft.com:5061;transport=tls;lr></a><br>
From: Phillip
Kyriacou<a class="moz-txt-link-rfc2396E" href="sip:+35722010058@sip.pstnhub.microsoft.com:5061;user=phone"><sip:+35722010058@sip.pstnhub.microsoft.com:5061;user=phone></a>;tag=dcea3c9546914ff8826afca13260da1c<br>
To:
<a class="moz-txt-link-rfc2396E" href="sip:+35796552237@sbc.intelligentsupport.eu:5061;user=phone"><sip:+35796552237@sbc.intelligentsupport.eu:5061;user=phone></a>;tag=as63d965d3<br>
Call-ID: 43f0f0be2fa05b408c81736dbe392aef<br>
CSeq: 1 INVITE<br>
Server: MediaGW V1.0<br>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER,
SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE<br>
Supported: replaces, timer<br>
Session-Expires: 1800;refresher=uas<br>
Contact: <<a
href="http://sip:+35796552237@82.102.42.52:5060"
target="_blank" moz-do-not-send="true">sip:+35796552237@82.102.42.52:5060</a>><br>
Content-Type: application/sdp<br>
Require: timer<br>
Content-Length: 339<br>
<br>
v=0<br>
o=root 601931926 601931926 IN IP4 82.102.42.52<br>
s=ASTERISK<br>
c=IN IP4 82.102.42.52<br>
t=0 0<br>
m=audio 16360 RTP/SAVP 0 8 101<br>
a=crypto:1 AES_CM_128_HMAC_SHA1_80
inline:IyrJsjVV0w5ORJQ3OJB0r8iyRZU+1lMjg4i9vzC2<br>
a=rtpmap:0 PCMU/8000<br>
a=rtpmap:8 PCMA/8000<br>
a=rtpmap:101 telephone-event/8000<br>
a=fmtp:101 0-16<br>
a=maxptime:150<br>
a=sendrecv<br>
||||||||||||||||||||<br>
====================<br>
</div>
</div>
_______________________________________________<br>
Kamailio (SER) - Users Mailing List<br>
<a href="mailto:sr-users@lists.kamailio.org" target="_blank"
moz-do-not-send="true">sr-users@lists.kamailio.org</a><br>
<a
href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a><br>
</blockquote>
</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>
<br>
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<td style="width: 55px; padding-top: 18px;"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank"><img src="https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" width="46" height="29" style="width: 46px; height: 29px;" /></a></td>
<td style="width: 470px; padding-top: 17px; color: #41424e; font-size: 13px; font-family: Arial, Helvetica, sans-serif; line-height: 18px;">Wolny od wirusów. <a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank" style="color: #4453ea;">www.avast.com</a> </td>
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