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Voice communication is an essential part of the service providers offers. When 5G Core is deployed, voice is leveraged using the 5G Core functions and IMS (IP Multimedia Subsystem), while the 5G use cases are delivered by the NR(New Radio) and the 5G Core. voice services will depend on the presence of an IMS Core network regardless of the deployment path. 5G will enable a wide range of truly novel applications where voice will play an important role. Voice is an important key component of the 5G services.
5G comes with unique characteristics to deliver responses at a minimal time i.e less than 1msec, and quick exchange of data signals which results in improved signal and picture quality. VoNR 5G is a calling service that utilizes 5G SA (Stand-Alone) Architecture for voice processing whereas ViNR 5G is a video service built on 5G SA to enable customers with the high-resolution video quality. Globally, operators are using SA Architecture that is considered as the primary network for future 5G networks. Efforts are being built and designed to configure and upgrade VoNR and ViNR video qualities.
VoNR is the IMS-based calling service that uses the 5G network for its source of IP (Internet Protocol) voice processing.
Types of voice services available over 5G mobile networks:
- Carrier-Grade Voice service: it has strict QoS support and does not belong to the public Internet Voice over New Radio (VoNR) or Vo5G.
- OTT voice services: it will continue to exist in 5G networks and they will continue to be provided through mobile internet access.