Dahua NVR4108-P User Manual page 229

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Section 1: there are six function buttons: Live（chapter 0）, setup (chapter 5.8), info (Chapter 5.9),
playback (chapter 5.10), alarm (chapter 5.11), and logout (chapter 5.12).
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Section 2: There are monitor channels successfully connected to the NVR.
Please refer to Figure 5-4 for main stream and extra stream switch information.
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Section 3: Open all. Open all button is to enable/disable all-channel real-time monitor. Here you can
select main stream/sub stream too. See Figure 5-5.
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Section 4: Start Talk button.
You can click this button to enable audio talk. Click 【▼】 to select bidirectional talk mode. There are four
options: DEFAULT，G711a，G711u and PCM. See Figure 5-6.
After you enable the bidirectional talk, the Start talk button becomes End Talk button and it becomes
yellow. Please note, if 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.
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Section 5: Instant record button. Click it, the button becomes yellow and system begins manual
record. See Figure 5-7. Click it again, system restores previous record mode.
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Section 6: Local play button.
Figure 5-4
Figure 5-5
Figure 5-6
Figure 5-7
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