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layout: page
title: Features
subject: Features
permalink: /features/
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Open5GS is a C-language Open Source implementation of 5GC and EPC, i.e. the core network of NR/LTE network.

#### Supported Features
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- Release-17 compliant
- AES, Snow3G, ZUC algorithms for encryption
- Support of USIM cards using Milenage
- IPv6 support
- Multiple PDU session
- Handover(5GC Xn/N2 and EPC S1/X2)
- CSFB(Circuit Switched Fall Back) and SMSoS(SMS Over SGs)
- Support ePDG Interface(SWx, S6b, S2b)
- VoLTE(Voice over LTE) with HSS-Cx interface
- VoNR(Voice over NR)
- 5G Roaming

#### Known Limitations
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- No Interworking with EPC
- No NB-IoT
- No OCS/OFCS
- No eMBMS
- No SRVCC
- No Emergency Call
