VoNR (Voice Over New Radio) is the voice target solution of the 5G network. The deployment of the 5G network has multiple options. Therefore, in addition to the VoNR target solution, the 5G voice solution also has such supplementary solutions as EPS Fallback, RAT Fallback and 5G SRVCC to meet the requirements of different network deployment modes and different network development phases. The 3GPP R15 standard has confirmed that the 4G VoLTE voice architecture is still used for 5G voice to provide voice services based on the IMS. The specific voice solution adopted by the operator depends on the actual 5G deployment mode and wireless deployment progress.
ZTE 5G voice solution provides unified access for 2G, 3G, 4G, 5G, WiFi and fixed network users. It supports the convergence of VoNR, VoLTE, VoWiFi, RCS, and FMC, and provides various multimedia service experience such as HD voice, HD video, multi-stream video and eSIM card, thus enhancing the operator's competitiveness in the competition with OTT. At the same time, through the standard API, network capabilities are open to third-party individuals, enterprises, and partners to quickly introduce various Internet applications.