Accessory handset only-requires a DS6611, DS662X-X series phone to operate Make and receive landline and cellular callsConnect to BLUETOOTH®-enabled cellular phones to make and receive cellular calls with the ease and comfort of a home phone system. Avoid the mad dash to catch your cellular call before it goes to voicemail. Take advantage of your home''s strongest cellular signalJust place the base unit where cellular reception is best, then enjoy the freedom to make and receive cell calls using your cordless handsets anywhere in your home. Download and store your cell phone directoryStore 1000 records from up to two different cell phones; no need to input names and numbers into your cordless phone system. Mobile notificationsKnow when your Android mobile phone receives a text, e-mail or social media update. Each handset beeps and displays which kind of message was received. You can also receive calendar reminders through the system. Virtual Multi-Line OperationEnjoy the freedom to make and receive a landline and cellular call-at the same time. Caller ID/call waiting-stores 50 calls Full duplex handset speakerphone Backlit keypad and display ECO mode power-conserving technology Quiet mode Expandable up to 5 devices with only one phone jack Compatible with VTech models IS6100 DECT 6.0 cordless headset and MA3222 Bluetooth speakerphone, and AT&T model TL80133 DECT 6.0 speakerphone Connect to Cell™ Call intercept 50 name and number phonebook directory Intercom between handsets Voicemail waiting indicator Last 10 number redial Mute Any key answer Volume control Trilingual prompts-choose between English, Spanish and French