Compatible with FSK/DTMF Incoming/outgoing calls memory One auto-IP memory with 32-digit Two IP by hand, memory with 32-digit Preset dialing Incoming check, delete and call back Date and time display Alarm clock 16 rings selectable, one standard music on hold LCD light adjustable, tone/pulse Local code with 8 digits Flash time: 1,000, 600, 300, 180, 120, 100, 95 and 90ms selectable Speaker phone: handsfree dialing and talking, handsfree volume adjustable Calculator function Ring light Night light with auto-sensor