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AXIS 2191 Audio Module
Sight, Speech and Sound — over IP!
In st a ll a ti o n Gu i de
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AXIS 2191 Installation Guide Page 1 of 7
The AXIS 2191 Audio Module
The AXIS 2191 Audio Module is an add-on device that provides audio capability to Axis network
cameras. The module connects quickly and easily to the serial port of the camera and is configured
and controlled via the camera’s user interface.
❶
❷
❹
❸
An Axis network camera (❸ or ❹) with an AXIS 2191 Audio Module connected provides live audio and video to browser clients (❶
and ❷) on the network.
Features and Functions
• Easy to install and use
• Runs on Ethernet LANs and/or the Internet
• Built-in omni-directional microphone
• Compatible with most microphones and speakers (not included)
• External microphone via 3.5mm socket or Line-In via the terminal block
• Simple configuration and management via the network camera’s administration pages
• Can be used in Full-Duplex, Half-Duplex or Simplex mode (see page 5)
• Push-to-talk button in client user interface in Half-Duplex or Simplex - Talk mode
• Fully adjustable input and output levels
•Mute function
Legal Considerations
Video and audio surveillance may be prohibited by laws that vary from country to country. Please
check the laws in your local region before using Axis network cameras or the AXIS 2191 Audio
Module for surveillance purposes.
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AXIS 2191 Installation Guide Page 2 of 7
The Front Panel
Power Connector
Power Indicator - Normally lit.
The Rear Panel
In
3.5mm socket
for connection
of external
microphone.
Volume In
Level control for
input. Use a
screwdriver to
adjust.
Serial Port Connector - Connect
the serial cable from here to the serial
port on the camera.
Activity Indicator - Lights up when the
camera has configured the audio module.
Mic
Built-in omnidirectional
microphone.
Volume Out
Level control for
speaker volume.
Use a screwdriver to adjust.
Line Out
3.5mm socket
for speakers
with built-in
amplifier, e.g.
PC speakers.
Int-Ext
Set to Int for
internal microphone or Ext
for external
microphone or
Line-In.
Level In/Level Out
The colors used to indicate the input and output levels are:
• Green - Level OK
• Yellow - Risk for overload
•Red - Overload
Terminal Block Connector
Used for:
• Line-In (e.g. CD, radio)
• Speaker-out (headphones or speakers
without amplifier)