Hellotel TS-500 Plus Telephone Set with Loudspeaker

16-digit LCD 16 ringer tones IDD lock and calculator FSK/DTMF system auto-detection Calendar and timer display function Redial from caller ID function 61 incoming call memories and redial function 16 outgoing call memories and conversation time review Auto IP function 5 local area code filter and 1 PABX code P/T dial mode switch Pre-dial number and call out LCD display of year, month, date, and time 1 Landline Included No Batteries Required AC Adapter not includes