Integrated Services Digital Network (ISDN); Supplementary service interactions; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user.
综合业务数字网(ISDN);补充业务交互;数字用户信令系统第一号(DSS1)协议;第3部分:用户测试套件结构和测试目的(TSS&TP)规范