(1) Micro controller unit (MCU) controlled. (2) 5,10,25 cents acceptable. (3) CO line/PABX compatible. (4) Incoming call timing and tariff charge rate control. (5) Keypad programmable: Free call, Barred call, Local call and STD call tariff charge rates programmable. (6) 8-digits owner password for free calls. (7) LCD displays real time clock, calling time limit count down, amount of coin put in, amount of coin needed for continues the call and the setting contents. (8) Can program to display the owner's telephone number. (9) Prevents Theft dialing. (10) Redial the number without withdrawing the coins. (11) Dial another number without withdrawing the coins. (Flash Feature). (12) Warning tone at 20 seconds before the call is terminated. (13) Online remote control programming. (14) Collect the coin after pushing the 'TALK'button.