- Control 8 cabins (8 lines) at the same time. - Can lock and unlock, any line in real-time and separately. - Support forward the calls and 3 party conference, can calculate all 2 calls at same time (home transfer) , the fuction which is popular in many countries to make home call transfer. - Automatic examination parameters and tariff after turned on to ensure correct charging. - Support most kinds of charge signals: polar-reverse, 16 / 12 kHz pulse signal, manually and delay automatically charge. - Can switch on and off the music after call and the LCD backlight by pressing single button. - Charge call fee correctly and display the charge information of 4 lines on screen during the call. - Display status of the lines such as off-hook, on-hook, dialing, calling, ringing and off-line, etc. - Remote wall display backlight which is a new features in the phone billing machines in the market. - Standby tariff is supported. - Holidays tariff rates are supported up to 1000 holiday t