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General introduction

IMS (IP Multimedia Subsystem) provides IP-based voice services for 4G and 5G networks. The system fully supports operation and maintenance (O&M) functions such as tracing, system configuration, reporting, management, monitoring and fault warning. The solution has been deployed in Vietnam (50 million subscribers), Mozambique (200,000 subscribers), and PoC projects in Peru and Cambodia.

Feature

  • Provides high-quality voice and video services (HD Call/Video), SMS/USSD over IP
  • Voice services include Identity Services (OIP, TIP, OIR, TIR), Call Holding (CH), Call Waiting (CW), Call Barring (CB), Call Forwarding (CF), Three-Party Call (3PTY), Handover, Roaming and Multi-SIM
  • Supports 4G and 5G networks (VoLTE/VoNR)
  • Supports network function virtualization technology (VNF/CNF).
  • Multi-vendor compatibility with Ericsson, Huawei and ZTE

Specification

Capacity

3 million subscribers/node and 60,000 concurrent calls

Reliability and availability

99.999%

Standard compliance

3GPP Release 16

Codecs

EVS, AMR-WB, AMR-NB, PCMA/PCMU