VTech 20-2481 2.4 GHz DSS 2-Line Expandable Cordless Phone with Digital Answering System and Caller ID (Silver and Black) 2-line, 2.4GHz Digital Spread Spectrum phone system Built-in digital answering system Multi-handset system, expandable to 8 users Base speakerphone and keypad; handset speakerphone Call waiting/ Caller ID