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<tt>Hi Ssergey,<br>
the ACK seem OK, but the R-URI does not contain the "sip.instance"
parameter defined in the 200 OK's Contact. Usually all contact
parameter should be preserved when constructing the ACK R-URI.<br>
Does your server receive the ACK, but it is not able to forward it
back to the callee (if yes, do you see any ERROR in the logs) ? <br>
Or it just don't receive the ACK at all?<br>
<br>
Daniel<br>
<br>
<br>
<br>
<br>
<br>
</tt>On 05/14/2018 08:39 PM, Sergey Safarov wrote:<br>
<blockquote type="cite"
cite="mid:CAHtxdDdJWN0XO+VKzCjDByRbCnzyK=pdMc8acjNROJpWrkBanQ@mail.gmail.com">
<div dir="ltr">Hello
<div>I have a call with not passed ACK by Kamailio. <a
href="http://prntscr.com/jhtobo" moz-do-not-send="true">http://prntscr.com/jhtobo</a><br>
Same behaviour i looked before when SIP endpoint contact
string is wrong</div>
<div>In this call look as contact string correct is correct
(packets 7 and 8) and i not understand why ACK (packet 9) not
passed to callee.<br>
<br>
Could you help me understand this.<br>
<br>
</div>
<div>PCAP file is create using homer tracer and TCP transport
packets is stored as UDP.</div>
<div> </div>
<div>Sergey</div>
</div>
<br>
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