Digital cordless telephone features exciting new nuisance call blocking technology whether you39re looking for a phone for your home or small business the nuisance call blocker allows you to store up to 30 numbers in a call block list whilst also allowing you to automatically block any unknown numbers from calling your line eco mode reduces power consumption when in eco mode up to 10 hours talk time a unique night mode allows you to silence the handset from ringing during a set period of timeb