<p>You have to set the outbound proxy address to same server and you should get what you want:</p>

<ul>
<li><a href="http://kamailio.org/docs/modules/stable/modules/imc.html#idp18801640">http://kamailio.org/docs/modules/stable/modules/imc.html#idp18801640</a></li>
</ul>

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