Feature:1. Display Function: DTMF or FSK dual system caller id (automatic identification ). Real time date and week display, LCD brightness level 5 adjustable2. Call Function: Answered call number and call time record 50 groups (8 bits) or 32 groups (16 bits), dialed call number 14 groups (8 bits) or 8 groups (16 bits) and call time record.3. Ring Function: 1 to 99 hours do not disturb, 16 common ringtones to select. Three groups of alarm function set, each set of sound different.4. Optional Flash Time: FLASH time 90 or 95 or 100 or 120 or 180 or 300 or 600 or 1000ms software is optional.5. Settings: Software sets the ringing volume, button sets the ringing volume, and hands free volume. Software setup electronic antitheft Soft setting P or T is optional.6. Key Function: IP function and single key storage function (M1 M10). R key transfer function, to ring volume adjustment.Specification:Item Type: Corded TelephoneMaterial: ABSModel: L019-3Color: BlackWire Gauge: American Telephone LineFunction:DTMF or FSK Dual System Caller ID (Automatic Identification)Call Number and Call Time Record 50 Groups (8 Bits) or 32 Groups (16 Bits)Call Number 14 Groups (8 Bits) or 8 Groups (16 Bits) and Call Time RecordReal Time Date and Week Display, LCD Brightness Level 5 Adjustable1 to 99 Hours Do Not DisturbYou Can Select 16 Common RingtonesSoftware Sets the Ringing Volume, Button Sets the Ringing Volume, and Hands Free VolumeSoftware Setup Electronic Anti Theft Soft Setting P or T is OptionalFLASH Time 90 or 95 or 100 or 120 or 180 or 300 or 600 or 1000ms Software is OptionalSet the Alarm Tone for Each of the Three GroupsIP Function and Single Key Storage FunctionM1-M10R Key Transfer FunctionTo Ring Volume AdjustmentApplication: Office, Home, Hotel Room, etc.Package List:1 x Corded Telephone 1 xTelephone Receiver1 x Tieline 1 x American Telephone Line 1 x English Instruction Manual