5G voice - the technology and network evolution

The journey to 5G has several possible migration paths and steps. Voice service must be supported in all 5G evolution steps. This paper outlines the voice service aspects, migration aspects and recommendations for deployments using NR non standalone (NSA) with 5G EPS or NR standalone (SA) with 5GC. Topics such as voice with Evolved Packet System Fallback, voice over NR, voice over Wi-Fi, SMS over 5G, emergency calls, roaming and future evolution aspects are included.

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