The IP Multimedia Subsystem (IMS), as the core control for fixed and mobile access, enhances network capabilities, by separating control functions from bearer and services.
IP多媒体子系统(IMS)作为固定接入和移动接入的统一核心控制网络，采用控制和承载、控制和业务相分离的机制，网络能力得到很大增强。
The concept of thoroughly separation of call control and bearer function is gradually introduced into the fixed network or mobile core network.
无论是固定网络还是移动核心网络都逐渐引入了呼叫控制、承载相分离的软交换技术。
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