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话费自动查询及催欠系统的设计哈尔滨市电信局白连滨随着通信建设的飞速发展，更多的城市居民安装了电话。由于个人电话用户数量猛增，交费难的现象日趋严重。采用预付费方式结算电话费势在必行。预付费方式采用后如何方便地为用户提供查询，就成了推行预付费方式的关键。...
Calls automatically query and design of arrears system Bailey of Harbin Bureau of Telecommunications With the rapid development of communications construction, more urban residents have installed the phone. Due to the soaring number of personal phone users, payment difficulties become more serious. It is imperative to settle the phone bill by prepaid method. How to easily provide users with the inquiry after the prepaid method is adopted has become the key to implementing the prepaid method. ...