<extension name="from_{{ item.key }}">
 <condition field="destination_number" expression="^{{ item.value.destination_number | default(item.value.extension) }}">
   <action application="answer"/>
   <action application="sleep" data="1000"/>
   <action application="play_and_get_digits" data="5 5 3 7000 # conference/conf-pin.wav ivr/ivr-that_was_an_invalid_entry.wav pin \d+"/>
   <action application="transfer" data="SEND_TO_CONFERENCE XML public"/>
 </condition>
</extension>
<extension name="check_if_conference_active">
 <condition field="${conference ${pin} list}" expression="/sofia/g" />
 <condition field="destination_number" expression="^SEND_TO_CONFERENCE$">
   <action application="set" data="bbb_authorized=true"/>
   <action application="transfer" data="${pin} XML default"/>
 </condition>
</extension>
