User`s manual

AXIS 210/211/211A - Audio (AXIS 211A only)

Audio Settings

This section describes how to configure the basic audio settings for the 211A, e.g. set the

communication mode and adjust the sound levels in the microphone and speaker

connected to the camera.

General

Enable audio transmission to and from the AXIS 211A.

Audio Channels

There are two audio channels between the AXIS 211A and other clients, one for receiving

audio and one for transmitting audio. Each audio channel can be turned on or off, which

means that there are four options for audio mode that can be used.

Full-duplex mode means that you can transmit and receive audio (talk and listen) at the

same time, without having to use any of the controls. This is just like having a telephone

conversation. The only controls you may wish to use are the mute buttons to turn off the

sound, and the sliders, to adjust the input/output volume levels. This mode requires that

the client PC has a sound card with support for full-duplex audio. If your available

bandwidth is 0.2 Mbit/s or less, it is recommended that you use Half-duplex mode instead.

Half-duplex mode also 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 help of the push to talk button. To speak, press and hold the button (check that the

microphone is not muted). When finished speaking, release the button. You will now be

receiving audio from the other end of the connection. Note that the push to talk button is

configured in the AMC, see

AXIS Media Control, on page 20. It is also possible to

configure the Push to talk button so that it toggles between speaking and listening modes.

Half-Duplex mode is best if you only have limited bandwidth available.