- Caller ID/call waitingstores 50 calls - Full duplex accessory 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 promptschoose between English, Spanish and French