The Softswitch is the the NGN control function entity, it provides the call and connect control function to timely request service for NGN, and is the call and the control core in NGN.
软交换是NGN的控制功能实体，为NGN提供具有实时性要求的业务呼叫控制和连接控制功能，是NGN呼叫与控制的核心。
Softswitch is core entity of NGN, which functions real-time service control, call control and connect control.
软交换作为NGN的核心实体，为下一代网络提供具有实时性要求的业务呼叫控制和连接控制功能。
Softswitch is core entity of NGN, which functions real-time service control, call control and connect control.
软交换作为NGN的核心实体，为下一代网络提供具有实时性要求的业务呼叫控制和连接控制功能。
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