| It’s just easy | Simplify desk phone management with headset audio controls and adding either the HL10 Handset Lifter or Electronic Hook Switch Cable (EHC) for remote call capabilities. |
| Extended range and talk time | The adaptive power system optimizes for range and talk time by automatically downshifting to low power when the headset is close to the base — saving battery life and maintaining maximum density. |
| SoundGuard technology | SoundGuard acoustic limiting technology protects against Acoustic Shock by limiting sounds to below 118dBA ensuring listening comfort and protection against audio spikes. |
| Superior audio quality | Your choice of narrowband audio to extend talk time or advanced wideband audio for high — definition voice quality. Enhanced Digital Signal Processing (DSP) provides more natural sound, delivering clear audio the way it’s intended to be heard. |
| Maximum protection | The CS540 headset includes DECT™ technology that provides better audio quality and eliminates interference from Wi-Fi networks while calls stay safe and secure. |