Siemens 8825 Gigaset 2.4 GHz 2-Line Expandable Cordless Speakerphone with Answering System 2.4 GHz digital spread spectrum frequency-hopping technology Integrated digital answering system; dual full-duplex digital speakerphones 2-line operation; 1 cordless handset included, expandable to 8 handsets Multi-language programming in English, French, and Spanish Voice-announced caller ID and call waiting