AT&T ML 2-Line Corded Telephone with Digital Answering System and Caller ID/Call Waiting, Black/Silver With Answering System

2-line operation- Dial and receive calls on two different phone lines.,Digital Answering System- Digitally records up to 12 Minutes of incoming messages, outgoing announcements and memos.2,Caller ID/call waiting- Allows you to view the name, number, time and date of incoming calls at a glance, even those on waiting.,Headset compatible (2.5mm jack),DSL Subscribers may need to us a DSL Filter