The handover number is used for establishment of a circuit between MSCs to be used for a call being handed over.

由此可以知道切换号只是在跨MSC切换时才用到，目的是在目标和源MSC之间建立电路。

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The Voice Call Continuity (VCC) -based IP Multimedia Subsystem (IMS) solution can accomplish Circuit Switched (CS) -ims handover and is a approach to Fixed-mobile Convergence (FMC).

基于IP多媒体子系统(IMS)的语音呼叫连续性解决方案是实现固定移动融合(FMC)的一种方式，可以实现从电路交换方式向IMS方式的过渡和演进。

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