User`s manual

41
Installation Appendix
Introduction
How to Use
Defi nitions in
Confi guration
Audio Settings
“Mute” Turn off audio.
“Internal microphone input gain” Modify the gain of the internal microphone input.
“External microphone input” There are two gain options, 0db and 20db.
“Audio type” Select audio codec “AAC” or “GSM-AMR” and the bit rate.