<include>
        <extension name="conference">
                <condition field="destination_number" expression="^conference_(.*)_pin_(.*)$" require-nested="false">
                        <action application="set" data="conference_id=$1" inline="true"/>
                        <action application="set" data="conference_pin=$2" inline="true"/>
                        <action application="set" data="conference_count=${conference $1 list count}" inline="true"/>

                        <condition field="${conference_count}" expression="^.*not found.*$" break="never">
                                <action application="transfer" data="conference_new XML default"/>
                        </condition>

                        <condition field="${conference_count}" expression="^\d+$" break="never">
                                <action application="transfer" data="conference_old XML default"/>
                        </condition>

                </condition>
        </extension>


        <extension name="conference new">
                <condition field="destination_number" expression="^conference_new$">
                        <action application="answer"/>
                        <action application="sleep" data="500"/>
                        <action application="log" data="CRIT ---------------------------------- NEW"/>

                        <action application="playback" data="conference/conf-welcome.wav"/>

                        <action application="conference" data="${conference_id}@default+${conference_pin}"/>
                        <action application="hangup"/>
                </condition>
        </extension>


        <extension name="conference old">
                <condition field="destination_number" expression="^conference_old$">
                        <action application="answer"/>
                        <action application="sleep" data="500"/>
                        <action application="log" data="CRIT ---------------------------------- OLD"/>

                        <action application="playback" data="conference/conf-welcome.wav"/>

                        <action application="set" data="conference_enforce_security=true" inline="true"/>
                        <action application="conference" data="${conference_id}@default"/>
                        <action application="hangup"/>
                </condition>
        </extension>
</include>