I'm trying the default conference in autoload_configs/conference.conf.xml, commented out the pin number line, but now when the ivr asks the pin number, for testing I tried to do this : <extension name="nb_conferences"> <condition field="${sip_to_uri}" expression="^(999)@$${domain}$"> <action application="answer"/> <action application="info"/> <!-- <action application="conference" data="confname@profilename+flags{mute|deaf|waste|moderator}+[conference pin number]"> --> <action application="conference" data="$1-$${domain}@default"/> <action application="send_dtmf" data="12345@120"/> </condition> </extension> and this on CLI: expand uuid_send_dtmf ${uuid} 12345 without success. How the default conference example accept DTMF ? Thanks F