Four-line corded system phone is expandable up to 16 extensions & features a digital answering system with 60 minutes of record time, auto attendant, remote access, call screening / intercept, & time / day stamp. Offers two data ports, 200 name / number directory, 32 speed dial & 16 intercom number locations, three-party conferencing, call transfer, auto line selection, Do Not Disturb function, flash, volume control on handset, speakerphone & headset, hold, intercom, last six-number redial, memory loss protection, mute, page, power failure operation, rapid scroll & selectable ring tones. Trilingual setup menu can be viewed in English, French or Spanish. Hearing aid compatible. 2.5mm headset compatible. Compatible with AT&T 1070 & 1040. DSL compatible (splitter / filters not included).