AT&T E5630 5.8 GHz Expandable Cordless Phone with Answering System (Silver/Black) 5.8 GHz analog signal; multi-user expandable to 4 handsets All digital answering system, 17-minute maximum recording time Caller ID/call waiting, 50-call memory; 50-number phone directory Wall-mountable; built-in speakerphone Headset compatible, belt clip