ETSI EN 300 185-3-1998 综合业务数字网(ISDN).会议呼叫,追加(CONF)补充业务.1号数字用户信令系统(DSS1)协议.第3部分:用户用测试套件结构和测试目的(TSS&TP)规范(版本1.2.4)
Integrated Services Digital Network (ISDN); Conference Call, Add-on (CONF) Supplementary Service; Digital Subscriber Signalling System No. One (DSS1) Protocol; Part 3: Test Suite Structure and Test Purposes (TSS&TP) Specification for the User (V1.2.4)