<div dir="ltr">Hello Daniel,<br><br>Okay, so I had a look at the config and we do use the t_relay() for customer facing proxy, so I was mistaken.<div><div><br></div><div>So I guess it's okay to reply 100 and then let kamailio handle the retry. Question is, how do I get it to resend INVITE when there is no response to the INVITE after a few seconds?</div></div><div>Is it a TM parameter or should I do it in the config script?<br></div><div><br></div><div>Thank you...</div><div>/Allan</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 19, 2020 at 1:28 PM Daniel-Constantin Mierla <<a href="mailto:miconda@gmail.com">miconda@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>
<p>Hello,</p>
<p>if kamailio is stateless (ie., you do not use tm module, but
forward() for sending out requests), then it will not do any
retransmission and it is not sending 408 itself (likely received
from downstream).</p>
<p>With a stateless Kamailio, you should not send out 100 trying,
but let upstream do retransmission if it is the case.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div>On 19.10.20 11:34, Allan Kristensen
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hello,<br>
<div><br>
</div>
<div>I'm trying to get Kamailio to retry INVITE. </div>
<div><br>
We have a Freeswitch which is sending INVITE to a sip user via
Kamailio proxy using static ip/location.</div>
<div>All is well, calls are flowing, but sometimes INVITE from
kamailio to user is lost and no attempt to retry is
occurring and so after 30 sec kamailio just returns 408
Request timeout.</div>
<div><br>
</div>
<div>Call flow is like this:</div>
<div><br>
</div>
<div><font face="monospace">FS Kamailio User</font></div>
<div><font face="monospace">--- INVITE --> </font></div>
<div><font face="monospace"><-- 100 Trying</font></div>
<div><font face="monospace"> --- INVITE ---></font></div>
<div><font face="monospace"> (Waiting 30 secs)</font></div>
<div><font face="monospace"><-- 408 Timeout<br>
</font></div>
<div><font face="monospace">--- ACK ---></font></div>
<div><br>
</div>
<div>So assume we have failed in handling retries somehow.
Kamailio is running stateless, but other retries are working,
so I assume this is not a problem?</div>
<div><br>
</div>
<div>Can someone perhaps point us in the right direction on
where to solve this?</div>
<div><br>
</div>
<div>Kamailio is version 5.2.4<br>
<br>
Thank you...</div>
<div>/Allan</div>
<div><br>
</div>
</div>
<br>
<fieldset></fieldset>
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</blockquote>
<pre cols="72">--
Daniel-Constantin Mierla -- <a href="http://www.asipto.com" target="_blank">www.asipto.com</a>
<a href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Funding: <a href="https://www.paypal.me/dcmierla" target="_blank">https://www.paypal.me/dcmierla</a></pre>
</div>
</blockquote></div>