Panasonic KX-TG5240M GigaRange Supreme 5.8 GHz DSS Expandable Cordless Phone with Answering System 5.8 GHz digital spread spectrum signal Expandable to 4 handsets, 1 included Integrated digital answering system Caller ID/call waiting, talking caller ID; Caller IQ 50-station memory and dialer; handset speakerphone; voice paging