Audio and video devices generally use this transfer type.

音频和视频设备一般使用这种传输类型。

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Security and reliability are built in and we will be able to see and hear each other through the use of webcams and audio devices.

远程协助安全可靠，我们可以使用网络摄像机及音频设备来交流。

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The users either use two different devices (4, 5) or use one device (6) for exchanging audio and for receiving video.

用户使用两个不同设备（4， 5）或者一个设备（6）交换音频和接收视频。

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One source has told me that data devices that display video(think streaming a tv show or a basketball game) use 10 times the amount of bandwidth of audio devices or ones that just deliver simple emails or text messages.

FORBES: Bumpy Transition to 4G Cellular