• 5G Architecture
  • 5G SMF Overview
  • Deploying and Configuring SMF through Ops Center
  • Smart Licensing
  • SMF Rolling Software Update
  • UCC 5G SMF - Release Change Reference
  • Features and Functionality
    • AN-initiated Session Modification Procedure
    • Cisco Common Data Layer
    • Content Filtering and X-Header Enrichment
    • Diameter Endpoint
    • DSCP Marking
    • Dynamic Routing by Using BGP
    • Emergency SoS Support
    • EPS Interworking
    • Event Detail Records
    • Failure Handling Support
    • Flow Failure Handling for Access and Mobility Procedures
    • GTPP Endpoint
      • Feature Summary and Revision History
      • Feature Description
        • Charging Related Transfers
        • CDR Transport through GTPP
        • Path Protocol
        • GTPP Message Types
        • Endpoint GTP Prime
        • GTPP Resiliency
      • How it Works
      • Configuring the GTPP Profile
      • Configuring the GTPP Endpoint
    • Handover Procedures
    • IMS PDU Sessions for Voice
    • Interfaces Support
    • IP Address Management
    • IPv6 PDU Sessions
    • MBR Short Circuit Optimization
    • Mesh Connectivity to All UPFs
    • MTU Support in PCO
    • Multiple and Virtual DNN Support
    • Multiple PLMN Support
    • Network-initiated Session Modification Procedures
    • New Radio Dual Connectivity
    • NF Discovery and Management
    • Overload Management
    • Performance Optimization Support
    • Pods and Services Reference
    • Policy and User Plane Management
    • RADIUS Authentication and Accounting
    • Redundancy Support
    • Roaming Support
    • Session and Service Continuity Mode
    • Session Timers
    • SMF Capabilities to Support 4G and 5G Devices
    • SMF Serviceability
    • Subscriber Charging
    • TAI Selection from AMF
    • UDM Integration
    • UP Session Activation and Deactivation Service Request Procedures
    • UPF Path Management and Restoration
    • Virtual Routing and Forwarding
    • Wireless Priority Services
    • Troubleshooting Information
  • SMF CLI Reference
  • SMF Sample Configuration
  • SMF Metrics Reference

Charging Related Transfers

Each Charging Data Function (CDF) has an O&M-configurable address list of Charging Gateway Function (CGFs) to which it can send its CDRs. The list is organized in CGF address priority order. If the primary CGF is not available, then the CDF sends the CDRs to the secondary CGF and so on.

Each CDR generating function only sends records to the CGF(s) of the same PLMN, not to CGF(s) located in other PLMN.

Each CGF in the PLMN must know the other CGFs’ network addresses to recommend another CGF address in case of redundancy. This is achieved by O&M configuration facilities that enable each CGF to have a configurable list of peers’ CGF addresses.

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