User manual
VIVOTEK
70 - User's Manual
Media > Audio
Audio Settings
Mute: Select this option to disable audio transmission from the Network Camera to all clients. Note 
that if muted, no audio data will be transmitted even if audio transmission is enabled on the Client 
Settings page. In that case, the following message is displayed:
External microphone input: Select the gain of the external audio input according to ambient 
conditions. Adjust the gain from +21 db (most sensitive) or -33 db (least sensitive).
Audio type: Select audio codec and the sampling bit rate .
■ G.711 also provides good  sound quality  and requires  about 64Kbps. Select pcmu (μ-Law) or 
pcma (A-Law) mode.
■ G.726 is a speech codec standard covering voice transmission at rates of 16, 24, 32, and 40kbit/
s. 
When completed with the settings on this page, click Save to enable the settings.










