ETSI EN 300 207-1-2001 综合业务数字网(ISDN).转移补充业务.1号数字用户信令系统(DSS1)协议.第1部分:协议规范(版本3.1.1)
Integrated Services Digital Network (ISDN); Diversion Supplementary Services; Digital Subscriber Signalling System No One (DSS1); Part 1: Protocol Specification (V3.1.1)