[Serusers] failure_route and onreply_route question

[Ryan Pagquil]

Hi list,
	I have a question about failure_route and onreply_route. Is there a 
rule which comes first appear on ser.cfg? I have this experience that 
my onreply_route is located before my failure_route and whenever I 
call t_on_failure nothing happens. I decided to move failure_route 
before onreply_route and it falls to the failure_route when I call 
t_on_failure. Anybody could clarify this?

Thanks,
Ryan