GNU nano 2.5.3                           File: /opt/freeswitch/etc/freeswitch/dialplan/default/bbb_conference.xml

<include>
    <extension name="bbb_conferences_ws">
      <condition field="${bbb_authorized}" expression="true" break="on-false"/>
      <condition field="${sip_via_protocol}" expression="^wss?$"/>
      <condition field="destination_number" expression="^(\d{5,6})$">
        <action application="jitterbuffer" data="60:500:"/>
        <action application="set" data="rtp_jitter_buffer_plc=true"/>
        <action application="set" data="rtp_jitter_buffer_during_bridge=true"/>
        <action application="set" data="suppress_cng=true"/>
        <action application="answer"/>
        <action application="conference" data="$1@cdquality"/>
      </condition>
    </extension>
    <extension name="bbb_conferences">
      <condition field="${bbb_authorized}" expression="true" break="on-false"/>
      <condition field="destination_number" expression="^(\d{5,6})$">
        <action application="jitterbuffer" data="60:500:"/>
        <action application="set" data="rtp_jitter_buffer_plc=true"/>
        <action application="set" data="rtp_jitter_buffer_during_bridge=true"/>
        <action application="set" data="suppress_cng=true"/>
        <action application="answer"/>
        <action application="conference" data="$1@cdquality"/>
      </condition>
    </extension>
</include>



  GNU nano 2.5.3                        File: /opt/freeswitch/etc/freeswitch/dialplan/default/bbb_echo_to_conference.xml

<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="60:500:"/>
        <action application="set" data="rtp_jitter_buffer_plc=true"/>
        <action application="set" data="rtp_jitter_buffer_during_bridge=true"/>
        <action application="set" data="suppress_cng=true"/>
      <action application="answer"/>
      <action application="conference" data="${vbridge}@cdquality"/>
    </condition>
  </extension>
</include>