[asterisk-users] how to get the status of failed call files

[Richard Lyman]

*snipped
>
>                                        ast_set_variables(chan, vars);
> insert pbx_builtin_var here -->
>                                        ast_pbx_run(chan);
>
> since DIALSTATUS and HANGUPCAUSE are both protected, you will probably 
> have to create another such as FAILEDCODE.
>
> i hope this helps.
>

oops, almost forgot.

and you need to fill it with 'reason'.