Advanced VoIP Billing System can be used for PIN, ANI, Username/Password base Origination, Termination and Wholesale services for VoIP. It is very well integrated and tested with Cisco, Quintum, MERA, ShoutIP, GNU GK and all those gateways/gatekeepers which support RADIUS protocol for Authentication, Authorization and Accounting. For list of features please visit http://AdvancedVoIP.com/features.html, To know how it works in prepaid billing with Cisco and Quintum please visit http://advancedvoip.com/HowItWorks.html. If you want to see the working/options/interface then visit our website http://AdvancedVoIP.com and follow the Online Demo. We have provide the online demo of our software at our site. If you are doing Origination with Prepaid Calling Cards and ANI Based then we will recommend you to use our Advanced Radius Server http://AdvancedRadius.com Radius server is required for communication between Gateway/Gatekeeper and billing system. It assigns the session time (maximum call time according to a destination to a user call) to each call in prepaid billing. Our software can be installed at Windows, Linux, Solaris and Unix. It supports MSSQL Server 2000, MYSQL and Oracle databases as backend database server. At Windows (Windows 2003/2000 server/professional/advanced-server, NT) we support MSSQL Server 2000. At Linux/Solaris/Unix we support MYSQL and Oracle database servers. At Windows for prepaid calling cards or call shops business we recommend to use MSSQL Server 2000 for the optimum performance.