Data is the most basic element in the TTCN-3 language. We defined data on the basic of data type.

测试活动的执行以数据为基础，数据是TTCN - 3语言中最基本的构成元素，它定义在数据类型基础之上。

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So How to design a new codec framework, which can easily expand new codec method and also support to expand new type language, is the urgent task in current popularize of applying TTCN-3 to test.

如何设计一个新的编解码器的框架，使其能够方便的扩充新的编解码方式和支持新的类型描述语言，是当前使用TTCN - 3测试时迫切需要解决的问题。

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