AT&T CL82321 3-Handset Red Cordless Phone with Digital Answering System & Expandable to 12 Handsets Caller ID/call waiting50 name and number caller ID history Expandable up to 12 handsets (uses 80101 accessory handset) Conference between an outside line and up to 4 cordless handsets Compatible with AT&T cordless headset English/Spanish/French setup menu