asterisk users - Apr 2005 - What do Digium use for tracking support tickets?

Hi,
I notice when you call digium and choose the option for tech support,
it asks you to enter
your reference number, it then looks up the job?

Does anybody know what they are using to do this?

I'd like to do this with asterisk and Request Tracker, maybe digium
are already doing somehting
similar?

Thanks
Mike