Motorola MD761 5.8 GHz Digital Expandable Cordless Phone with Answering Machine and Caller ID (Black/Silver) 5.8 GHz digital signal; expandable to 8 handsets, 1 included Digital answering system, accessible from base and handset Visual call-waiting and voicemail-waiting indicator Caller ID with 50-call memory; 50 shared phone book memory locations Intercom, speakerphone, 3-way conferencing, custom ring tones