Convergent Online Charging & Rating Engine

The project goal was to develop Converged Rating and Charging Engine system that will provide rating and charging capabilities for Session (phone call), Event (SMS, MMS), and Data usage (Internet/bandwidth usage, OTT services usage). In addition, it had to enable rating and charging for external services exposed to it by API, so that the third-party systems could perform real-time rating and charging, money transfer and electronic top up. As a real-time OSS component, it was a key critical system in MNO and MVNO deployments.


  • Fast development of features which diverse across multi continent deployments and market differences
  • Enabling correct and fast information in operation

Business analysis

Custom Software Development

Solution architecture

Support Services

Technologies used

  • Java, Osgi
  • Guice, Spring
  • JMS
  • SQL

Team composition:

  • Solution Architect
  • 8 Back-end software developers
  • Project highlights

    Converged Rating and Charging Engine system includes following features set: prepaid/post-paid accounts, on/offline charging, money transfer, top-up, vouchers, flexible rate plans, tariff administration UI, monetary and non-monetary currencies, bundles, auto recharge, cost control, Friend & Family VPN, and quick credit. Architectural features include: modular design, loose coupling between modules and run-time configuration changes. It also has fast near-real time response characteristics.


    Key benefits are features set that fit into various MNO/MVNO market and cultural differences. Benefits include fast near-real time response, modular design, mature API for integration, and management & tariff modelling UI tool.

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