lets set hold music to silence in this case it has special meaning ... it means SILENCE

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11212 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/dialplan/default.xml

@@ -311,6 +311,7 @@
     <!-- dial the freeswitch conference via SIP-->
     <extension name="freeswitch_public_conf_via_sip">
       <condition field="destination_number" expression="^9(888|1616|3232)$">
+	<action application="export" data="hold_music=silence"/>
 	<action application="bridge" data="sofia/${use_profile}/$1@conference.freeswitch.org"/>
       </condition>
     </extension>