AT&T ML17939 2-line Operation Speakerphone with Caller ID and Digital Answering System Body Color: Black Additional Features: Highlighted Features Fully Integrated Digital Answering System 2-Line Operation Clearspeak Dial-in-Base Speakerphone General Automatic Line Selection Chain Dialing ENERGY STAR Certified English/Spanish/French Setup Menu Headset Compatibility Headset Compatible (2.5 mm jack) Hearing Aid Compatible Hold Line Power Mode--for use Line Status Indication Mute Answering Systems Call Screening/Intercept Digital Answering System for Each Line Memo Recording Message Time/Day Stamp Remote Access Up to 12 Minutes of Digital Recording Time for Each Line Voice Prompts Phone Directory Memory: 100 Speed Dial Memory: 18 Caller ID Memory: 99 Answering System Type: Digital Recording Time: Up to 12 Minutes Message Time / Date Stamp: Yes