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 Convergent billing system

IN/CAMEL module

IN/CAMEL

The module provides online charging function for fixed line and mobile communication services. Online charging function setup real-time credit control & balance management before session/event starts and during the session. The module provides Service Control Function in view of Intelligent Network concept.

Hardware level is represented by special blocks installed in x86-compatible PC and connected to switch by E1/T1 interfaces. The module supports ISUP, SCCP, MAP, TCAP SS7 protocols. Switch must have the following features for integration:

  • for fixed line networks - INAP (Intellegent Network Application Protocol)
  • for mobile networks - CAMEL (Customised Applications for Mobile network Enhanced Logic).

The module supports CAMEL Phase 2+ to provide online charging function for outgoing roamers (it is neccesary to support CAMEL 2+ or higher for visited switches).

Basic features of session-level charging by duration:

  • Get request from switch (Service Switching Function) for service initiation;
  • Preliminary rating of service;
  • Unit reservation on balance;
  • Calculates of maximum session duration;
  • Allow/cancel of session with maximum duration;
  • Get message about session finish from the switch;
  • Final rating of service and unit debeting;
  • Free of reserved units when session is not started.

Basic features of event-level charging:

  • Get request from switch (Service Switching Function) for service initiation;
  • Preliminary rating of service;
  • Direct debiting of balance;
  • Allow/cancel of service;