D-Link DNR-322L User Manual page 36

Section 4 - Configuration
Speaker On/Off: Turn the speaker on or off.
Mic On/Off: Turn the microphone on or off.
PTZ Control: You can control the camera view by utilizing the
PTZ (pan, tilt, and zoom) camera control panel to adjust the
camera angle. This function is only available with cameras that
support the PTZ function.
System Info: Displays Storage Information, such as HDD and
USB drive information.
Log: Displays the System, NVR, and Event logs.
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