Supported Interfaces

This section describes the interfaces supported between the SMF and other network functions in the 5GC.

  • N4—Reference point between the SMF and UPF.

  • N7—Reference point between the SMF and PCF.

  • N10—Reference point between the UDM and SMF.

  • N11—Reference point between the AMF and SMF.

  • N40—Reference point between the SMF and CHF.

  • S5—Interface between the PGW-C and S-GW.

  • S2b—Interface between the PGW-C and ePDG.