1 to 4 line capability, 200 name/number directory, 32 speed dial and 16 intercom number locations, expandable to 16 stations, 3-party conferencing, headset compatible, chain dialing and programmable pause, rapid scroll, 4-line lighted display, page, intercom and call transfer between stations, memory loss protection, auto line selection, hold, do not disturb, display dial, auto redial, last 6 number redial, 2 data ports, power failure operation on all 4 lines (requires a 9V battery), digital receiver and speakerphone, headset volume control, selectable ringer tones, charcoal.