DIN EN 300097-3:1999 综合业务数字网(ISDN).联接线路识别显示(CLOP)补充业务.数字用户用1号信令系统(DSS1)协议.第3部分:用户用试验组结构及试验目的规范
Integrated Services Digital Network (ISDN); Connected Line Identification Presentation (COLP) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for