本文件规定了网络端的测试套件结构和测试目的（TSS&TP） T参考点或重合的S和T参考点（定义见ITU-T建议I.411[7]） 符合用户对用户信令（UUS）补充业务第三阶段标准的实现 通过数字用户信号系统的泛欧综合业务数字网（ISDN） 第一号（DSS1）协议，EN 300 286-1[1]。本文件的另一部分规定了抽象测试套件（ATS）和部分协议实现 基于本文件的额外测试信息（PIXIT）形式表。其他部分规定了TSS&TP和 T参考点用户侧或其重合S和T参考点的ATS和部分PIXIT形式表 符合EN 300 286-1[1]的实施。

The present document specifies the Test Suite Structure and Test Purposes (TSS&TP) for the Network side of the T reference point or coincident S and T reference point (as defined in ITU-T Recommendation I.411 [7]) of implementations conforming to the stage three standard for the User-to-User Signalling (UUS) supplementary service for the pan-European Integrated Services Digital Network (ISDN) by means of the Digital Subscriber Signalling System No. one (DSS1) protocol, EN 300 286-1 [1].A further part of the present document specifies the Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma based on the present document. Other parts specify the TSS&TP and the ATS and partial PIXIT proforma for the User side of the T reference point or coincident S and T reference point of implementations conforming to EN 300 286-1 [1].