<div dir="ltr">Changing enable_full_lr parameter from the rr module fixed the issue. Now I'm getting ACK from MS to 200OK.<div>Thank you</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 24 Feb 2021 at 15:12, Juha Heinanen <<a href="mailto:jh@tutpro.com" target="_blank">jh@tutpro.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"><br>
> SIP/2.0 200 OK<br>
> Via: SIP/2.0/TLS 52.114.75.24:5061;branch=z9hG4bK6b5ac083<br>
> Record-Route:<br>
> <sip:fqdn:5067;transport=tls;r2=on;ftag=7a6409ee42ac48a897be110166a2bb0b;lr=on><br>
> Record-Route: <sip:sip-du-a-eu.pstnhub.microsoft.com:5061;transport=tls;lr><br>
<br>
I have ;r2=on in both R-R headers.  And also you have ;lr=on in one and<br>
;lr in the other.<br>
<br>
-- Juha<br>
<br>
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</blockquote></div>