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; English version ETS 300403-4:1997
综合业务数字网(ISDN).数字用户信号发送系统第1号(DSS1)协议.电路模式基本呼叫控制用信号发送网络层.第4部分:用户测试套件结构和测试目的(TSS&TP)规范;英文版ETS 300403-4:1997