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<p>Hello,</p>
<p>have you look at syslog messages? Are there any errors? Between
Kamailio instances, tcp for sip should work. Check also configs to
be sure UDP is not enforced there.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<br>
<div class="moz-cite-prefix">On 22.02.18 12:40, Amar Tinawi wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAGjMUpgxXor56O2BB20MytHvxjv9Z5+QwgqkJXB1bAGtHjtDEA@mail.gmail.com">
<div dir="ltr">Hello list
<div><br>
</div>
<div>For some reason i couldn't register on kamailio ims when i
use only TCP protocols between nodes, the error was solved
when i enabled UDP between I-CSCF and S-CSCF</div>
<div><br>
</div>
<div><br>
</div>
<div>is it mandatory for those two nodes to talk over UDP only ?
or i'm missing something ? </div>
<div>and in general for sip protocol which is better ? UDP or
TCP ?</div>
<div><br>
</div>
<div><br>
</div>
<div>Regards,</div>
</div>
<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
<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>
Kamailio Advanced Training - March 5-7, 2018, Berlin - <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
Kamailio World Conference - May 14-16, 2018 - <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a></pre>
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