LCD Corded Caller ID Telephone Home Office Wired Landline Telephone Set Phone Caller Model Name:L019-3 Description: Calculator function HD hans-free calling DTMF / FSK dual standard caller ID(automatic identification) Caller iD and time record 50 groups (8 bits)or 32 groups (16 ...LCD Corded Caller ID Telephone Home Office Wired Landline Telephone Set Phone Caller Model Name:L019-3 Description: Calculator function HD hans-free calling DTMF / FSK dual standard caller ID(automatic identification) Caller iD and time record 50 groups (8 bits)or 32 groups (16 bits) Caller lD 14 groups (8 bits) or 8 groups(16 bits) and call time record Real-time date and day display,LCD brightness adjustable 5 levels 1 ~99 hours do not disturb 16 common ringtone selection Software to set the ring volume, buttons to set the ring volume and hands-free volume Software settings electronic anti-theft, optional soft set P/T FLASH time 90/95/100/120/180/300/600/1000ms software optional 3 sets of alarm function settings, each alarm sound different IP function and one-touch storage function(M1-M10) R key transfer function Redial, pause and call back function When you forget to close the line or hang up badly, it will automatically close the line(no clutter interference) Intelligent grab line outgoing code 8-bit settings Local code 8-bit settings,calls automatically filtered Handle / handsfree /ringtone: three-in-onevolume adjustment Dial-up conversion / dial lock control:keyboard digital control