Instruction manual
 The AXIS 2191 Audio Module  AXIS 2400+/2401+ Admin Manual
 30 
Installing the Audio Module
❶ Before installing the AXIS 2191 Audio Module, first install your video server. Refer to the 
installation section of this manual. If you intend running the audio module in full-duplex mode, 
check that the sound card on your computer supports this.
❻Connect power to 
the audio module. 
❷If using an external microphone, connect it to 
the socket provided. To use an alternative input 
device, (e.g. CD-player or radio) connect it to 
Line-In on the terminal block.
❹Connect a loudspeaker to the 3.5mm socket (amplified speakers 
only), or to Out on the terminal block (speakers with no amplifica-
tion). Other devices (including headphones) are connected to the 
terminal block. 
❼Check that the power indicators on both the audio module and the 
video server are lit. Note that the power LED will blink during power-up.
❺Using the supplied cable, connect 
the audio module’s serial port to the 
video server’s serial port.
❸Set the selector switch to 
Ext to use an external 
microphone or device. 
Otherwise, set to Int to use 
the internal microphone.
❽Using a screwdriver, adjust 
the Volume In control so that 
the Level In LED occasionally 
shows yellow, but not red.
❾To verify the connection to the AXIS 2191, 
start Internet Explorer and enter the video 
server’s IP address in the location/address 
field, e.g. 171.1.2.200, as shown here. Config-
ure the audio module from the server’s 
administration pages, as described in the fol-
lowing section.










