D-Link mydlink DNR-312L User Manual page 44

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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