Phone Features: Answering System - on Both Lines, Caller ID - 100 Locations at Handset/Base, Call Waiting, Speakerphone - Handset / Base Duplex, DND (Do Not Disturb), Conference Call - Up to 7, DirectLink - 2-way Radio Communication, Phone Book - 100 Names / 2 Numbers per Name, Indicator - New Message Waiting at Handset / Base / Alert Tone, Intercom - Between Handsets, Speed Dial - 10 Dial Memory Locations, Clock, Expandable - Up to 10 Handset