Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 4: Test Suite Structure and Test Purposes (TSS&TP) specification for the user
综合业务数字网(ISDN);数字用户信令系统第一号(DSS1)协议;用于电路模式基本呼叫控制的信令网络层;第4部分:用户测试套件结构和测试目的(TSS&TP)规范