4-Line Phone Basic- Four-line expandablecorded telephone- The ATT945 replaces the ATT944- ATT945 is compatible with the ATT974, ATT984, and the older models, ATT944/955/964- Speakerphone - 1 to 4 line capability- Intercom - Page- Expandable up to 16 stations (the maximum number of stations is 12 if one of the ATT944,955, or 964 is attached to the system)- 2 Dataports- Easy to install- 3 Party conferencing (inside or outside lines, or a combination)- Call transfer - 32# Speed dial and 16 intercom number locations (can be used for one-touch memory, two-touch memory, and direct station dialing)- Power failure protection for all 4 lines- Individual station paging (intercom) or system-wide paging- Headset jack- 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- Auto line selection- Display dial- Headset jack (2.5mm)- Chain dialing- Rapidscroll navigation pad- Memory loss protection- Programmable pause- Selectable ringer tones- Hearing aid compatible- 9V battery required for programming, not included- Titanium blue (dark gray blue)ATT945