ATAT1003 Features: * Handset system * Telephone and intercom * Caller ID requires a subscription from telephone service provider * Equalizer for customize audio * Selectable ring tones and wall mountable * Caller ID history and use display dial button to quickly call the selected number * Speak and listen without holding for handset * Quickly access the directory entries by scrolling alphabetically and entering the first letter of name * Program up to 50 names and associated phone numbers * 10 Speed dial and 10 intercom number locations * Redial last 10 number * Expandable system (uses up to 12 handsets for single phone jack) * Up to 14 minutes of digital recording time * Digitally enhanced cordless telecommunications (DECT) * Superior quality of voice and sound