The AT&T BL108-2 puts two DECT 6.0 cordless handsets across your home with automatic robocall blocking, Bluetooth smartphone pairing, and a digital answering machine built in.Smart Call Blocker stops robocalls before the phone rings — automatically, from day one. One-touch blacklist any number with the dedicated handset key; the block directory holds up to 1,000 entries. Connect to Cell pairs your smartphone via Bluetooth, letting you make and receive mobile calls through either cordless handset while eliminating cellular dead zones at home.The digital answering system records up to 22 minutes of messages. Caller ID Announce speaks the caller's name aloud so you can screen calls from anywhere without picking up. Both handsets feature a 2.4-inch color backlit display with status icons for voicemail, battery, and missed calls. Audio Assist boosts volume and filters background noise mid-call. Handsets intercom each other.Handset intercom — call between handsets directlyDECT 6.0 long-range — interference-free sound up to 1,000 ft with advanced antenna and noise-filteringHearing aid compatible — HAC/T-coil ratedVoIP compatible — works with Ooma, Vonage, Google Voice, and traditional landline and cable services