I have a setup with 2 FreeSwitch servers and a single Kamailio sevrer in front with the dispatcher module.<br><br>Everything works when directly connected to FreeSwitch. When I connect to Kamailio I&#39;m only able to call one way between 2 extensions.<br>

<br>The log from FreeSwitch says:<br>2011-09-29 15:51:53.625761 [ERR] sofia_reg.c:2136 Cannot locate any 
authentication credentials to complete an authentication request for 
realm &#39;&quot;10.0.1.7&quot;&#39;<br><br>I guess it because, somehow, that one of the extension has a local IP.<br><br>Both extensions can register and call into FreeSwitch and hear hold music etc. It&#39;s just one of the extension who can&#39;t call the other extension.<br>

<br>I don&#39;t know if the error should be fixed on FreeSwitch or on Kamailio. And how...<br><br>Can anyone help me out?<br>