telephone with CID ABS button good shape telephone with CID with good shapeFSK/DTMF auto compatible IP function  10 groups of two touch memory 35 groups of incoming and 16 groups of outgoing number memory5 levels of LCD contrast adjustable Ring volume electronic adjustableHandsfree volume electronic adjustableMusic On Hold function16 groups of ring selectable3 groups of alarm Mechanical lock Local code filterBlue LCD backlight Redial functionPre-dial functionFlash Clock