ETSI PRETS 300 185-6-1995 综合业务数字网(ISDN).会议呼叫,追加(CONF)补充业务.数字用户1号信令系统(DSS1)协议.第6部分:抽象测试套件(ATS)及部分协议额外测试信息实现
Integrated Services Digital Network (ISDN); Conference Call, Add-on (CONF) Supplementary Service; Digital Subscriber Signalling System No. One (DSS1) Protocol; Part 6: Abstract Test Suite (ATS) and Partial Protocol Implementation Extra Information for Tes