wth SIP signaling exchange 5G system service requirements QoS flow establishment Ultra-high-definition audio QoS flow tear down VoNR high-level architecture Interworking and voice call continuity 185 5G NR access and core networks Interworking with legacy voice networks IP multimedia subsystem Packet switched handover from 5G to 4G Single radio voice call continuity VoNR initial procedures EPS fallback Subscriber provisioning Radio access technology fallback IMS connectivity establishment Wi-Fi calling IMS registration Summary Third-party registration VoNR call procedures Part 2: 5G Network Design, Deployment Models, and Advanced Use Cases 5G Deployment Options 5G network deployment architectures 195 A technical comparison of NSA versus SA NSA network architecture An economic comparison of NSA versus SA SA network architecture 4G to 5G migration strategies The different 5G deployment options The evolution of the EPC to 5GC defined by 3GPP A comparison of the EPC and 5GC SA options Summary NSA options Table of Contents 5G Non-Standalone Networks Introduction to NSA networks 5G NSA - option 3 call flows Types of NSA networks Advantages and shortcomings A deep dive into NSA networks Summary The architecture of the option 3 NSA network 5G Standalone Networks Benefits and use cases of a 5G SA Designing a macro network network Designing a non-public (private) network 5G SA network design fundamentals 5G network resilience and failure Essential precursors design 5G SA network components and end-to-end Network performance analysis call flow Summary 5G Infrastructure Design Understanding NFV Managing O-RAN infrastructure The role of SDN Using hybrid cloud Understanding MEC C-RAN The emergence of the telecom cloud Carrier aggregation Summary Understanding O-RAN 5G Network Slicing Understanding network slicing Network slicing challenges Network slicing simplified Overcoming the network-slicing challenges Table of Contents Security considerations for network slicing Architecture and flow diagram Network slicing architecture 