DialUp/VPN users AAA module (rlm_nibs) for FreeRADIUS radius-server. Prepaid and postpaid time and (or) traffic and (or) time+traffic real-time billing. All data stored in SQL-database. Very flexible.
The project is a preconfigured VoIP PBX VM Image based on Asterisk. But provides more advance features, such as LDAP integration, VQ monitoring via RTCP XR reports, LDAP user login, integrated billing system and telephone directory PDF generator.