[asterisk-biz] prepaid telephone cabins

[lists at infoway.net]

Hi,

I'm looking for asterisk based solution to install prepaid telephone cabins in which people would prepay a deposit and then be able to make calls. When done, the cashier would be able to print a CDR and bill and refund any unused money from the deposit. 

Ideally, the solution should also allow me to rent a pc for internet access. 

Thanks, 
Waldo