It is the driving force for the entire network's end-to-end convergence to build an ALL IP core network with open service architecture: let IP based services drive IP based networks; let service convergence drive network convergence. This is the principle on which Huawei's IMS is designed.

Combining our expertise in the IP and softswitch areas, we have solved carrier-class operation problems of IP technologies, including IP-QoS, IP Security, and IP O&M. Many solutions are deemed as best practices in the industry. These technologies and experiences provide strong assurance for IMS deployment. Because of this, DT (Deutsche Telekom) chose Huawei to deploy the industry's first and biggest IMS based convergence solution in Hungary.