[asterisk-users] Dial application response code--help required

Hello all,

I am testing the Dial application with the fall through
priorities for different cases

what i want is the flow after failure of the Dial application
which simulates response codes like
1)404 -- Not found
2)480 --Temporarily Unavailable
3)486 --User busy

i did manipulate the priority flow like the following for
the case 2 and 3 ...

exten => _XX,1,Dial(SIP/extension)
exten => _XX,2,VoiceMail( extension@default|u) --for 480 case
exten => _XX,3,Hangup()
exten => _XX,102,VoiceMail(extension@default|b)--for 486 case
exten => _XX,103,Hangup()

that was my understanding
if the flow is correct?
just correct me if i am wrong
and what about the case 1 (404 Not Found)?

Thanks and regards
srinivas antarvedi

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Srinivas Antarvedi