ISO/IEC 15991:2003现行
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Call Priority Interruption and Call Priority Interruption Protection supplementary services
出版：International Organization for Standardization
专家解读视频
CSA ISO/IEC 15991:2004 (R2014) - Identical
NBN EN 301 655:2004 - Equivalent
DIN EN 301655 (2004-12) - Identical
NEN ISO/IEC 15991:2003 - Identical
BS ISO/IEC 15991:1998 - Identical
