Nx Witness User Manual

Two-way audio (transmitting audio to a camera or I/O device from the Nx Witness client) is possible if you have a microphone connected to your PC. Currently this feature is supported on the following devices:

•ONVIF compliant devices

•Axis cameras with firmware 5.x or higher

•Sony SNC-CX600

•The entire Digital Watchdog camera line

•The entire Hanwha camera line

If a device supports 2-way audio, you will see a blue microphone button when the device is open in layout, as shown below.

To manually transmit audio to a device

Press and hold the microphone icon while speaking. You can use the spectrum analyzer to check the level while the button is depressed. Release the button to end the transmission.

You can also configure an event rule or soft trigger to play sound or speak text on a device; see the Play Sound, Repeat Sound, and Speak topics for more details.

Note: Error will appear when attempting to manually transmit audio with incorrect audio input parameters.