About

Open5GS is a C-language Open Source implementation of 5GC and EPC, i.e. the core network of NR/LTE network.

Supported Features


  • Release-16 compliant
  • AES, Snow3G, ZUC algorithms for encryption
  • Support of USIM cards using Milenage
  • IPv6 support
  • Multiple PDU session resource(EPC only)
  • S1/X2 Handover(EPC only)
  • CSFB(Circuit Switched Fall Back) and SMSoS(SMS Over SGs)
  • VoLTE(Voice over LTE)

Known Limitations


  • No OCS/OFCS
  • No NB-IoT
  • No eMBMS
  • No SRVCC
  • No Roaming
  • No Emergency Call
  • No ePDG Gateway