V5.2接口一致性测试规范，是V5.2接口测试的指导性文件，对V5开发人员有较大帮助-V5.2 interface conformance test specification, V5.2 interface test the guiding document, the right V5 developers have more help

No.7信令系统中SCCP的国家规范YD/T 1126,对于开发No.7和IU接口有很大的参考学习价值-SCCP Signaling System No.7 National norms of YD/T 1126, for the development of No.7 and IU has a great interface reference value study