NF Z82-098-3*NF EN 300098-3:2001 综合业务数字网(ISDN)连接线路识别限制(COLR)补充业务 数字用户信号发送系统第1号(DSS1)协议 第3部分:用户的试验组结构及试验目的规范
Integrated Services Digital Network (ISDN) - Connected Line Identification Restriction (COLR) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part 3 : Test Suite Structure and Test Purposes (TSS&TP) specification for