The prepay telecommunications system (60) includes a prepay call management platform (50) which is directly coupled to a telecommunications carrier switch (24). A customer database (116) is coupled to the prepay call management platform (50) for storing prepay customer data, and a plurality of customer...http://www.google.com.tw/patents/US20010009849?utm_source=gb-gplus-share專利 US20010009849 - Prepay telecommunications system
