[mainmenu]
exten => s,1,Answer()
exten => s,2,Background(welcome-mainmenu)
exten => 1,1,Macro(stdexten,301,SIP/301)
exten => 2,1,Macro(stdexten,310,SIP/310)
exten => 3,1,MusicOnHold()
exten => 9,1,Directory(default)