Also, the hardware circuit-switched networks need to run effectively are extremely expensive, mostly because voice and data services must be supported on different wires.

另外，硬件电路交换网要办切实极为昂贵，因为大部分语音和数据服务就必须支持不同的绳索。

youdao

Also, the hardware circuit-switched networks need to run effectively are extremely expensive, mostly because voice and data services must be supported on different wires.

另外，硬件电路交换网要办切实极为昂贵，因为大部分语音和数据服务就必须支持不同的绳索。

youdao