when the first member creates and enters in a new conference everything is ok. but if a new memeber enters there is no audio in the conference, unless the ivr. I have a very simple conference dialplan like this <extension name="create_conference"> <condition field="${sip_to_uri}" expression="^000(\d{10,15})@$${domain}$"> <action application="set" data="instant_ringback=true"/> <action application="ring_ready"/> <action application="sleep" data="3000"/> <action application="answer"/> <action application="conference" data="$1-${domain_name}@wideband"/> </condition> </extension> I tried to add <action application="export" data="absolute_codec_string=speex@16000k"/> but no success Thanks