CT-DECT systems provide their users with a broad range of options for short-range communication needs. All participants communicate wirelessly and in full-duplex, i.e. simultaneous talk and listen is possible at all times. In the standard configuration, up to 5 people can communicate with one another in this way; the optionally-available CT-DECT Case or CT-DECT Conference unit can extend the network up to a total of 8 people.

The digital radio integrated into the earmuff cup of the CT-DECT headset provides wireless transmission of voice recorded by a specialized noise-compensating microphone. Optionally, each headset can also be equipped with CT-ASR (Ambient Sound Reception). This technical feature significantly boosts work safety by enabling the wearer to hear warning signals or environmental sounds despite noise reduction. To avoid damage to hearing, environmental noise is reduced to a level of 85 dB (A) automatically.