VoNR (Voice over New Radio)

VoNR in context

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

The mobile core is where subscriber sessions, mobility and policy live. 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. Core exposure is the difference between a single-subscriber leak and a fleet-wide breach.

To place VoNR in the wider telecom-security picture, review SRVCC, 5G SA, AMF, Base Station (BS), GPRS and Massive MIMO.

Related terms

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

Equipment

IMS core (CSCF, TAS, MRF, MGCF, BGCF)

• BGCF
• CSCF
• E-CSCF
• I-CSCF
• IMS
• IMS-AKA
• IR.92
• IR.94
• MGCF
• MTSI
• All 14 terms

Articles in the P1 mobile network security guide

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.