asterisk users - Aug 2007 - analog lines running agi on hangup question

I have the following dialplan.
Everything seems good except for one thing.
If the background message is playing and the user hangs up and does not 
press a digit
how do I run an agi on that event.
I tried an exten => h,1,agi(smvoice,-digium_failed) but that was never 
called.
I am using 1.4.10
thanks,
Jerry
---------------------------

[smvoice-analog]
exten => s,1,Wait(1)
exten => s,2,Set(TIMEOUT(absolute)=30)
exten => s,3,Background(SM_PRESS_ONE_TO_HEAR_MESSAGE)
exten => s,4,Goto(s,3)

; Accept any digit to continue (turn off the timer)
exten => _X,1,Set(TIMEOUT(absolute)=0)
exten => _X,2,agi(smvoice,-digium_asterisk)

exten => i,1,agi(smvoice,-digium_failed)

exten => t,1,agi(smvoice,-digium_failed)

exten => T,1,agi(smvoice,-digium_failed)

exten => failed,1,agi(smvoice,-digium_failed)