example of how to use loopback in this case if you happen to attended transfer…

 example of how to use loopback in this case if you happen to attended transfer someone to voicemail

conf/dialplan/default.xml

@@ -264,7 +264,7 @@
 	<action application="bridge" data="user/${dialed_extension}@${domain_name}"/>
 	<action application="answer"/>
 	<action application="sleep" data="1000"/>
-	<action application="voicemail" data="default ${domain_name} ${dialed_extension}"/>
+	<action application="bridge" data="loopback/app=voicemail:default ${domain_name} ${dialed_extension}"/>
       </condition>
     </extension>