In the VoIP retail business, it may be used for pre-paid (PIN/account/ANI) based authentication. ARS can also used as a live CDR collector in a wholesale (carrier based) VoIP environment. It can be easily customized with any voip billing software for a complete billing solution. We have many installations of ARS with Advanced VOIP Billing Software (AVB) in both retail and wholesale (carried based) environments. ARS now supports all kinds of RADIUS compliant VoIP gateways (including Cisco, Mera and Quintum) and fully supports Vendor Specific Attributes (VSA) with the help of configurable radius vendor dictionaries.