5G System Fallback Mechanisms (EPSFB/ EPS Fallback) for IMS Voice by Rahim Navaei
This presentation explains How 5G system due some reason can redirect the 5G VoNR capable device to the 4G system to continue for IMS voice call (VoLTE: Voice over LTE)
VoNR (Voice Over NR)
VoLTE (Voice Over LTE)
EPS Fallback(3GPP EPSFB) for IMS voice service
5G system, 5G Base Station, gNB, NG-RAN, 5GC (5G Core)
EPS, 4G Base Station , eNB, E-UTRAN, 4G core (EPC)