催费系统，使用VC5.0编写的电信行业使用的催费软件， 若客户欠费，系统会自动拨通客户电话，提醒客户缴费，需要使用语音卡-The system can remind the customer to pay as soon as possible if the customer needs to pay, and it was used in the telecommunications industry, and it is developed with vc++ 5.0