The devices that transform voice back and forth between circuit and packet forms are called Internet telephony gateways.

在包和电路形式之间来回变换语音的装置叫因特网电话网关。

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Through this technique a realtime list of bad URLs is formed and pushed back out to the secure web gateways for blocking.

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Skydog also works alongside existing routers, such as those providing back up or integrated with broadband gateways, to provide the additional functionality only available with Skydog.

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