IC Realtime 1/2/4 Channel H.264 Network Video Server - Manual (Page 41)

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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
Figure 5-10.
Figure 5-10
5.2.2 PTZ
Before PTZ operation, please make sure you have properly set PTZ protocol.
Click PTZ button, the interface is shown as in Figure 5-11.