Upgrade your home or office with a multi-handset system. Caller ID Announce and Smart Call Blocker, with a 1,000 blacklisted number memory, lets you eliminate known telemarketers and annoying robocalls. Digital answering system, with built-in voice guide, makes it easy to capture and review messages as well as set up and manage your preferences. Reliable DECT 6.0 digital technology enhances audio quality, ensuring ultra-clear, buzz-free communication.