prepaid public telephone system and method

摘要

The present invention relates to a public telephone line payment system and method, in particular pre-paid by the PBX system If you are in a public phone centers would have paid a telephone call charges in line to get the phone call information, such as telephone call charges in real time and on a prepaid public telephone system and how to take advantage of the phone. ; The present invention is the PBX system to perform the display control to perform a call control on the phone call based on the call control, to display the telephone call charges and telephone call information, including the phone time in the screen display of the phone and; Linked through a communications network and the PBX system is characterized in that performing the telephone call control to monitor the call state of the phone and the PBX system hayeoseo interlock comprises a computer for monitoring call to process the telephone call information and, also, the present invention comprises the steps of: setting a phone receives the pay telephone call charges in the phone line and reset the system state; And a step of displaying a phone call information to the phone, including the telephone call charges and telephone talk time of the phone call according to the call; The phone call rates and processes deducted from the value calculated by subtracting the pre-paid telephone call charges fees according to the phone call information to determine if the phone call rates low warning value or higher; The telephone call charges are subtracted value is greater than or equal to monitor the telephone call termination telephone call charge warning value to a final phone call information is characterized in that it comprises the step of displaying in real time.