<include>
  <extension name="ECHO_TO_CONFERENCE">
    <condition field="${bbb_from_echo}" expression="true" break="on-false"/>
    <condition field="destination_number" expression="^(ECHO_TO_CONFERENCE)$">
      <action application="jitterbuffer" data="60:120"/>
      <action application="answer"/>
      <action application="conference" data="${vbridge}@cdquality"/>
    </condition>
  </extension>
</include>
