Feature 4-line operation, 1-4-line compatibility Simple installation Expandable up to 10 stations (1 console and 9 handsets) Auto attendant on each telephone line Digital answering system (180min voice recording time) Voice mail box for each station Customizable Music On Hold Full Duplex Speakerphone 6-party conferencing Page, Intercom, Call transfer, Voice message transfer between stations FSK Caller ID/call waiting Extra-large display for easy viewing 100 name and number phonebook directory 50 name and number caller ID history 32 Number Speed Dial 10 polyphonic ringer (1 for each line) Ring group setting, Do not disturb 4 lighted line status indicators Auto line selection, Primary Line setting Display dial, Pre-dialing, Chain dialing Last 10 number redial, Auto redial Tone/Pulse Dialing Call privacy Mute Flash New voice message indicator Programmable greeting messages Memo recording, Call recording Message Guard memory for power failure Call screening, Call intercept Remote access with toll saver Time and date stamp on each voice message Start, Stop, Skip, Repeat, Delete, Delete all for recorded messages COVM Indication (Central Office Voice Mail) Power failure operations on all 4 lines (Requires 4 x AA Alkaline Batteries, not included) Hold reminder tone, Voice message reminder tone Ringer volume control Handset receiver, Speakerphone, Corded headset volume control English/Spanish/French setup menu Voice Prompt Rapid scroll DSL compatible (splitter/filters not included) Corded headset compatible (2.5mm Jack) Wall mounting supported