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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 2535-2013 |
Internetwork number portability centralized business management systems and business systems interface protocol testing methods accepted 网间号码携带集中业务管理系统与业务受理系统接口协议测试方法 |
China Telecommunication
Standards Internetwork number portability |
 English PDF |
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