Sony Multi-Profile CCD Box Type Network Camera HQ1 - Manual (Page 49)

Network Camera User’s Guide
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Audio
: Audio parameters
Audio:
To enable or disable audio function
Audio Input Source:
To select audio source from built-in MIC or external MIC.
Audio Mode:
To select Simplex or Full duplex (2-way audio) mode
Input Gain:
To adjust gain of input audio
Output Gain:
To adjust gain of output audio