freeswitch/conf/testing/autoload_configs/fifo.conf.xml

<configuration name="fifo.conf" description="FIFO Configuration">
  <settings>
    <param name="delete-all-outbound-member-on-startup" value="false"/>
  </settings>
  <fifos>
    <fifo name="cool_fifo@$${domain}" importance="0">
      <!--<member timeout="60" simo="1" lag="20">{member_wait=nowait}user/1005@$${domain}</member>-->
    </fifo>
  </fifos>
</configuration>