Manufacturer: Advanced American Telephone

This four-line system with hands-free speakerphone and intercom is compatible with models 964, 944 and 955, and provides access for up to four separate telephone lines with four different telephone numbers, while allowing expansion to a 12-station, full-featured telephone system. Other features include intercom, paging, call transfer, 24-number dialing memory, 2 data ports, do not disturb, hold/mute/flash, redial/auto redial, conferencing and automatic line selection. Headset compatible.