With the DL72310 DECT 6.0 expandable cordless phone, you won't have to worry about unwanted calls waking you up in the middle of the night or tying up the line. Robocalls are automatically blocked from ever ringing through, even the first time. You can also permanently blacklist any number you want with one touch. The Bluetooth® Connect to Cell™ technology lets you receive cell and/or landline calls from one home phone system. With a touch of a button, enjoy the high-tech benefits your smartphone offers. Even if your smartphone is in a different room, you can still access Siri or Google Now from the cordless handsets.