Top features: - DECT security keeps your conversation secure - Dedicated Nuisance Call Block button stops telemarketers from bothering you - Do not disturb mode quiets all incoming calls for set periods of time - Advanced answering system always lets you know when there's a new message - Intercom for communicating with other handsets and transferring calls  DECT securityDECT telephones encrypt their communication to the base unit, providing security for your conversations. The encryption for the Panasonic KX-TGD623EB Cordless Phone is updated periodically, so you can talk freely.Dedicated Nuisance Call Block buttonYou can block unwanted calls with ease using the dedicated button. When the phone is ringing or even mid-call, you can press the Call Block button to add the caller to your blocked list to prevent them from bothering you again.Do not disturb modeEach handset can be individually programmed to not ring at specific times, so you're not woken up in the middle of the night. You ca