ETSI ETS 300 207-1-1994 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(包括勘误表1-1995年6月)
Integrated Services Digital Network (ISDN) Diversion Supplementary Services Digital Subscriber Signalling System No. One (DSS1) Protocol Part 1: Protocol Specification Includes Corrigendum 1 - June 1995