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.

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。

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