freeswitch/conf/vanilla/autoload_configs/xml_scgi.conf.xml

<configuration name="xml_scgi.conf" description="SCGI XML Gateway">
  <bindings>
    <binding name="example">
      <!-- one or more |-delim of configuration|directory|dialplan -->
      <!-- <param name="host" value="127.0.0.1" bindings="dialplan"/> -->
      <!-- <param name="port" value="8080"/> -->
      <!-- <param name="timeout" value="10"/> -->
      <!-- one or more of these imply you want to pick the exact variables that are transmitted -->
      <!--<param name="enable-post-var" value="Unique-ID"/>-->
    </binding>
  </bindings>
</configuration>