This BT Advanced phone with 100% nuisance call blocking and answer machine can block up to 1000 specific numbers or silence calls with the Do Not Disturb button. Powered by truCall's award winning technology, the Advanced Phone offers complete control over which calls you want to take and those you want to block. With a hands-free speaker and excellent sound quality, this phone is quick and easy to set up featuring a 1.8 monochrome black and white screen to display the user menu and display messages.