DVR systems DVRxx04LE-A Series - Manual (Page 96)

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Refresh
You can use button to refresh camera list.
Start Dialogue
You can click this button to enable audio talk. Click 【▼】 to select bidirectional talk mode.
There are two options: DEFAULT/G711a.
Please note, the audio input port from the device to the client-end is using the first channel audio
input port. During the bidirectional talk process, system will not encode the audio data from the 1-
channel.
Local Play
The Web can playback the saved (Extension name is dav) files in the PC-end.
Click local play button, system pops up the following interface for you to select local play file. See
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Figure 7-10.
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Figure 7-10
7.2.2 PTZ
Before PTZ operation, please make sure you have properly set PTZ protocol. (Please refer to
chapter 7.3.2 Setting-> Pan/Tilt/Zoom).
Click PTZ button, the interface is shown as in
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Figure 7-11
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.