AT&T E5865 5.8 GHz DSS Expandable Cordless Phone with Answering System and Dual Keypads 5.8 GHz digital frequency-hopping spread spectrum signal Expandable to 8 handsets, 1 included All-digital answering machine, 25 minutes of recording time Caller ID/call waiting, 50-call history 50-number phone directory; handset and base speakerphones