Add 486 message (SIP) to 17 cause (PRI) translation when you call Dial app and then Hangup:

exten => _X.,1,Dial(SIP/user)
exten => _X.,2,Hangup()


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1596 65c4cc65-6c06-0410-ace0-fbb531ad65f3