介绍了形式化描述技术在测试集生成过程中的应用，针对PPP协议介绍其协议实现时的状态迁移。
This paper introduces the application of formal description technology in the progress of generate testing suite, and the PPP protocol's state transference of the implement module.
智能网业务的形式化描述技术和业务验证的理论与方法是目前智能网（IN）业务实现过程中的关键技术。
The formal description techniques for intelligent network (IN) service and the theory and methods in IN's service verification are the key technologies in IN's realization.
本文依据国际电信联合委员会(itu - T)的智能网能力集建议，对智能网业务的形式化描述技术(FDT)、智能网业务逻辑验证的理论与方法等进行了研究。
Based on the ITU-T Intelligent Network CS Recommendation, the paper studies the formal description techniques (FDT) for in service and the theory and methods in in's service verification.
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