What is Converged Charging System (CCS)?

The 5G Converged Charging System (CCS) architecture consists of four distinct modules:

  1. Charging Function (CHF) :
  • OCF(Online Charging Function) providing quota management functionality under Credit-Control terminology
  • CDF(Charging Data Function) providing CDRs generation functionality for charging events received from the CTF or CEF via Nchf
  1. Account Balance Management Function (ABMF) : Balance and Quota Management

  2. Rating Function (RF) :
    - Rating of data volume
    - Rating of session / connection time
    - Rating of service events

  3. Charging Gateway Function (CGF) : Collect/Validate/Parse/Enrich the RAW CDRs and distribute Processed CDR to Billing.


Source: 3GPP TS 32.240 V17.3.0 (2021-09)