5.12 Suspend and Resume Notification procedures

5.10 Error Indication Handling

5.8 PFCP Association

5.9 Usage of Vendor-specific IE

5.6 PFCP Session Handling

5.5 F-TEID Allocation and Release

5.7 Support of Lawful Interception

5.4 Policy and Charging Control

5.3 Data Forwarding between the CP and UP Functions

5.2 Packet Forwarding Model