FEATURES ?SK/DTMF system compatible, FSK auto-adjust real time ?Records 38 incoming and 5 outgoing numbers (max 12 digits) which can be reviewed, called back and deleted ?3 VIP numbers setting ?alculator (max 10 digits) and hold on music function ? digits of PABX access setting ?uto-filter local area code, auto-add ??in IDD number when call back ?re-dialing function (max digits), dialed number editable ? built-in ordinary rings ? steps lock, lock the number led by ??and lock all numbers (except 110, 112, 119, 120, 122) ?ulse/Tone dialing mode compatible, alarm clock, anti-steal function ?ands free dialing and talking.