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通信技术在给人们带来极大便利的同时也成为不法分子牟取非法利益的重要手段。回拨卡业务是通过非法业务平台对移动手机被叫免费业务开展的一项长途通话优惠业务,它的出现在很大程度上扰乱了通信市场的正常秩序,严重损害了通信运营商的利益。七号信令集中监测系统的建成和投入使用对发现和监控非法业务提供了一种有效手段。
Communication technology has brought great convenience to people as well as an important means for criminals to seek illegitimate profits. The call-back card service is a long-distance calling discount service conducted by the illegal service platform on the called free service of the mobile phone. Its appearance largely disrupted the normal order of the communication market and seriously damaged the interests of the communication operators. The completion and putting into use of SS7 centralized monitoring system has provided an effective means for discovering and monitoring the illegal business.