User`s manual
53 
2.3.7  Audio (Audio Mode and Bit Rate Settings) 
The Audio Mode setting can be found under this path: Streaming> Audio. 
In the Audio page, the Administrator can select one transmission mode and 
audio bit rate. 
Transmission
Mode 
  Full-duplex (Talk and Listen simultaneously) 
In the Full-duplex mode, the local and remote sites can communicate 
with each other simultaneously, i.e. both sites can speak and be heard 
at the same time. 
  Half-duplex (Talk or Listen, not at the same time) 
In the Half-duplex mode, the local/remote site can only talk or listen to 
the other site at a time. 
  Simplex (Talk only) 
In the Talk only Simplex mode, the local/remote site can only talk to the 
other site. 
 NOTE: This function is not available for Compact Fixed Dome. 
  Simplex (Listen only) 
In the Listen only Simplex mode, the local/remote site can only listen to 
the other site. 
  Disable 
Select the item to turn off the audio transmission function. 
Server
Gain
Setting 
Set the audio input/output gain levels for sound amplification. The audio gain 
values are adjustable from 1 to 6. The sound will be turned off if the audio gain 
is set to “Mute”. 
Bit
Rate 
Selectable audio transmission bit rate include 16 kbps (G.726), 24 kbps (G.726), 
32 kbps (G.726), 40 kbps (G.726), uLAW (G.711) and ALAW (G.711). Both uLAW 
and ALAW signify 64 kbps but in different compression formats. Higher bit rate 
will let higher audio quality and require bigger bandwidth. Click on <Save> to 
confirm the setting. 










