Q620 two line telephone feature highlights1.Two analog lines support2.3 party local conferencing with line1 and line23.Caller ID and Call waiting number display*4.Caller ID with Directory name match dispaly5.100 name and number directory with Auto-dial6.100 name and number Call Loga)50 missed callb)25 incoming callc)25 outgoing call7.Calling date and start time stored in the Call Log8.Dial from Call Log with number edit9.25 name and number Redial with number edit10.Missed call display/light indicator11.Call timer12.Secure numbers-for privacy in entering personal codes13.Unique Note Pad function (save a number, while talking)14.Speaker phone on/off with LED15.Headset (Earphone) connection port16.Mute on/off with LED17.4 programmable memory keys for speed dial or feature access18.3 lines/24 characters backlit display19.Voice mail message waiting indicator.20.3 screen -interactive function keys21.Link/ Release /Hold/Volume keys22.Visual ringing/extension in-use indicator23.On hook dial24.English/French/Spanish language prompts option25.Desk or wall mount26.Hearing Aid compatible27.Compatible with PBX, Centrex, standard telephone service28.Provide basic telephone service when a power failureSpecifications:lDimensions: L(23cm)×W(18 cm)×H(13cm)lWeight(kg):0.85lColor: Black or AlmondlOperating environment : 0℃-50℃(32℉-122℉)lDial: TonelLink(Flash)600ms ( factory setting)lPower:9V AC transformer