Circuit switched transmission entails a dedicated circuit for communication between two dedicated devices.

线路交换传送需要在两个专用设备之间使用专用线路进行通信。

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Is Each PKS node have a dedicated circuit breaker. Redundant devices should have dual power supply?

是否每个PKS节点在配电盘上均有单独的断路器，冗余节点应配两路电源？

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However, VOIP differs from the usual phone services in that it sends calls as digital packets of information over data networks rather than relying on a dedicated circuit-switched network.

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Using a dedicated high-current electric circuit, like those installed for electric ovens, these can recharge the MINI E in 4.5 hours. (With an ordinary mains socket, by contrast, recharging could take all day.) For cars with smaller battery packs, like the Smart, overnight recharging from a conventional socket is possible.

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To oversimplify a bit, a circuit switch opens up a dedicated line between you and that fellow you're talking with 1, 200 miles away.

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