ETSI EN 300 207-2-2001 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2部分:协议实现一致性声明(PICS)形式规范(版本3.1.1)
Integrated Services Digital Network (ISDN); Diversion Supplementary Services; Digital Subscriber Signalling System No One (DSS1); Part 2: Protocol Implementation Conformance Statement (PICS) Proforma Specification (V3.1.1)