Packet Switched and/or Circuit swicthed Communication The earlier models were distributed between legacy circuit switched networks and evolving packet switched networks Sources : NEC eNB SGW E-UTRAN PDG MME With the massive improvents in quality of network srevices packet switched comunication protocls became more resilent and replaced the circuit swicthed protcols for realtime communication. LTE … Continue reading IMS in EPC ( Evolved Packet Core )