RADIUS Authentication & Authorization (IETF RFC 2865)
RADIUS Accounting (IETF RFC 2866) e.g. for simple Prepaid data
RADIUS Change of Authorization and Disconnect Request (IETF RFC 3576)
DIAMETER Base Protocol (IETF RFC 3588)
DIAMETER Gx interface (3GPP TS 29.212, Release 9)
DIAMETER Gy interface (3GPP TS 32.299, Release 9)
Diameter Credit Control Application (IETF RFC 4006)
Compressed XML/HTTP protocol for rate & usage notifications to third party clients and apps
SMPP (Short Message Peer to Peer protocol) for SMS notifications
SMTP for email notifications
Internal database with hierarchical object model : Admin, SP, Reseller, Subscriber Group, Subscriber, Device
SQL and LDAP access to third party databases
Internal rating engine based on Wallets and Product Types
Integration with third party rating engines, SCP and OCS
Management GUI
SOAP/XML provisioning interface
SNMP MIB based management
200 TPS per server
4000 TPS per load balancer
N+1 scalability