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 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.
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 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.
MSOFTX3000 provides call control and connection management for voice and data services processed over IP, TDM, or ATM.UMG8900 implements media conversion, bearer control, digital signal encoding, echo cancellation, and conference bridging.
The IMS network provides mobile and fixed multimedia services and consists of functional entities CSCF and ASs.