Call control is centralized to IMS Core under ICS architecture. 2G, 3G and 4G network have unified core network. That make more efficient control plane routing , unified network operation and maintenance, so, it can reduce O&M cost, and improve O&M efficiency.
The IMS Core can provid centralized service process for 2G/3G /4G subscribers. All kinds of user with different access way, such as traditional 2G / 3G users , IMS users and ICS IMS users can be provided unified service, including session control, consistent user experience and voice continuity.
2G/3G/4G subscribers have unified service provisioning, convergent subscriber database. Traditional 2G/3G subscriber, IMS user have sharing database. It simplifies network and database operation & maintenance.
The Huawei VoLTE solution evolves from CS to all-IP VoLTE networks to provide HD voice, HD video, and rich media services for subscribers.
VoWiFi greatly improves indoor coverage, decreases air interface rent, provides a cost efficient roaming solution, and increases carrier competitiveness.
Huawei CaaS solution helps carrier use the existing networks to provide new services, develop new markets, and build a perfect ecosystem.