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针对拨打长途电话和信息台电话对企业造成的话费损失,对交换机数据库进行了多次修改和完善,设计出一种限制拨打长途电话和信息台电话的方法,节省了话费支出。
For long-distance calls and information desk phone calls caused by the loss of business, the exchange database has been modified and improved many times, designed to limit the long-distance calls and information desk phone call method to save the bill expenses.