Axis 211M Guida Utente

The AXIS 211M can transmit audio to 

other clients using a connected 

external microphone or the internal 

microphone and can play audio 

received from other clients via 

connected speakers. This section 

describes how to configure the basic 

audio settings for the AXIS 211M, 

such as setting the communication 

mode and adjusting the sound levels 

in the microphone and speakers 

connected to the camera. 

The speakers connected to the audio out-
put must have a built-in amplifier, e.g. PC speakers.

Check this box to enable audio in the AXIS 211M.

Full duplex mode is simultaneous two-way audio where you can 

transmit and receive audio at the same time.

Half duplex mode transmits and receives audio in both directions, 

but only in one direction at a time. This means that you must select 

when to receive or transmit audio with the push-to-talk button. To 

speak, press and hold the button (check that the microphone is not muted). When finished, release the button 

and you will receive audio from the other end of the connection.

Note that the push-to-talk button is configured from AMC. It is also possible to configure the push-to-talk 

button so that it toggles between speaking and listening modes.

When selecting Simplex - Network Camera speaker only mode, the speaker connected to the camera will play 

audio, but no audio will be transmitted from the camera to other web clients. This could be used to provide 

spoken instructions to a person seen in the camera. This mode requires you to use the push-to-talk button.

Simplex - Network Camera microphone only mode transmits audio only from the AXIS 211M to web clients. It 

will not receive audio from any other web clients. This can be used in remote monitoring, web attractions etc., 

to provide live audio, as well as video, of a monitored situation.

When using half duplex, the Send the sound from the active client to all other clients option transmits the 

audio signal from the client that is talking to all the other clients.

Client PC

TCP/IP Network

Example of a network 
using AXIS 211M cameras to transmit 
audio and video across the network.