Panasonic KX-TG3031S 2.4 GHz Expandable Digital Cordless Answering System Digital 2.4GHz Frequency Hopping Spread Spectrum Cordless Phone Includes All-Digital Answering System with 12 Minutes of Record Time Expandable up to 4 Total Cordless Handsets with Intercom Capability Digital Handsfree Speakerphone on Handset Call Waiting Caller ID