4-Line Phone w/ Caller ID- AT&T 4-Line Expandable corded telephone- Compatible with theATT1040 and ATT1080 (not backwards compatible with other AT&T 4-line models)- Caller ID, call waiting caller ID- 200# Caller ID memory- New call/message indicator- Entry removal button- Large blue lighted display- Speakerphone -1 to 4 line capability- Intercom between stations- Expandable up to 16 stations- Call transfer between stations- 32# Speed dial - 16 Intercom number locations (can be used for one-touch memory, two-touch memory, and direct station dialing)- 2 Data ports- Easy to install- 3 Party conferencing (inside or outside lines, or a combination)- Power failure protection for all 4lines (battery not included)- Individual station paging (intercom) or system-wide paging- Headset jack (2.5mm)- 4-Line backlit LCD display- Redial/hold/mute/flash- Last 6 number redial- Volume control for receiver, speakerphone, headset, ringer- Do not disturb- Wall mountable (bracket included)- Auto line selection- Display dial- Rapid scroll navigation pad- New message indication- 4 Lighted line indicators- Auto redial- Memory loss protection- Selectable ringer tones- Hearing aid compatible- DSL Compatible (splitters/filter not included)- Every unit in the system must be assigned an extension number for the intercom feature to work- 1 Year manufacturer's warranty - Dark silverATT1070