This video covers VoLTE architecture, UE, Radio Access Network (RAN), IP Multimedia Subsystem (IMS-CN), Evolved UMTS Terrestrial Radio Access Network (E-UTRAN), Evolved Packet Core (EPC).
VoLTE stands for voice over Long Term Evolution. Utilising IMS technology, it is a digital packet voice service that is delivered over IP via an LTE access network. Voice calls over LTE are recognised as the industry-agreed progression of voice services across mobile networks, deploying LTE radio access technology.