I need to setup a Auto Attendant using Asterisk. I want extension 4444 to ring the Auto Attendant. How do I make this work?

extensions.conf

exten => s,1,Background(/var/lib/asterisk/sounds/s-xpress.wav)
exten => s,3,Background(silence/5)
exten => s,4,noop()
exten => s,5,Background(/var/lib/asterisk/sounds/s-xpress.wav)
exten => s,6,Background(silence/10)
exten => s,7,Background(Hangup)
exten -> 0,1,Goto(infotest|1000|1)
exten => 1,1,Goto(infotest|1001|1)
exten => 2,1,Goto(infotest|1002|1)
exten => 3,1,Goto(infotest|1003|1)
exten => 4,1,Goto(infotest|1004|1)
exten => 5,1,Goto(infotest|1005|1)
exten => i,1,playback(invalid)
exten => i,2,goto(infotest|s|1)