VoNR (Voice over New Radio)

VoNR in context

The radio access network is where mobile devices attach to the operator's infrastructure. Attacks in this layer include IMSI catching, rogue base stations and downgrade attacks; defenses rest on mutual authentication, integrity-protected signaling and Open RAN supply-chain hygiene.

The mobile core carries subscriber sessions, mobility and policy. In 4G it is the EPC (MME, HSS, S/PGW); in 5G it is the Service-Based Architecture with AMF, SMF, UPF, AUSF, UDM and the NRF.

To place VoNR in the wider telecom-security picture, review SRVCC, 5G SA, AMF, Base Station (BS), GPRS and Massive MIMO: each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

• SRVCC
• 5G SA
• AMF
• Base Station (BS)
• GPRS
• Massive MIMO
• Mobile Network
• MVNO

Related topic hubs

• VoLTE Security IMS/VoLTE signaling risk: SIP, IMS-AKA, media plane attacks.
• IMS Security Training Training on IMS, VoLTE/VoNR, SIP and RCS security.
• 5G Security 5G SBA, SEPP, SUCI, 5G-AKA, N32 and service-based interface security.
• LTE Security Training Training on 4G/LTE core, Diameter, NAS and RRC security.

More from the TelcoSec Glossary

Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.