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[PTZ control] PTZ control allows the following camera motions: upward, downward, left, and
right. The lens operation includes vary magnification, vary focus, vary iris, etc. This control is
shown in Figure 12.
4.3 Two –way Audio
1. Under real-time video, hover your mouse cursor over the Play Window, "Voice" and "Talkback" icon
will appear at the bottom of the Play Window, remove the mouse cursor, the icons will disappear (as
Figure 13).
Figure 12
Figure 13
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