ETSI PRETS 300 267-3-1996 综合业务数字网(ISDN).7 kHz电话与可视电话电信业务.数字用户1号信令系统(DSS1)协议.第3部分:用户测试套件结构和测试目的(TSS&TP)规范
Integrated Services Digital Network (ISDN); Telephony 7 kHz and Videotelephony Teleservices; Digital Subscriber Signalling System No. One (DSS1) Protocol; Part 3: Test Suite Structure and Test Purposes (TSS&TP) Specification for the User