[asterisk-users] Blind transfers security

[Stanisław Pitucha]

2009/9/14 Matt Riddell <lists at venturevoip.com>:
> For every billable item we use a code for the account and store it in...
>
> accountcode :)

I'm not sure that actually answers my question... If you have a A->B
call and set accountcode for A on it, then B does a blind transfer,
how do you set the correct accountcode then? (assuming B is a
different customer and blind-transfers you to pstn)