A telecommunication device includes an audio signal transmission unit configured to receive an audio signal and to transmit the same to a further telecommunication device. The telecommunication device further includes a signaling unit configured to output a signaling when there is a concern that the audio signal is acoustically understandable for third parties or represents a disturbance for third parties. A further telecommunication device includes an audio signal receive unit configured to receive an audio signal from a further telecommunication device and to output the same acoustically, and a signaling unit configured to output a signaling when there is a concern that the output audio signal is acoustically understandable for third parties or represents a disturbance.
The telecommunication devices may be interconnected in a system.
Also described are corresponding methods for operation and a computer program.