ISO/IEC 15505:2003现行
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Message Waiting Indication supplementary service
出版：International Organization for Standardization
专家解读视频
BS ISO/IEC 15505:1997 - Identical
KS X ISO/IEC 15505:2010 - Identical
SS EN 301 260 Ed. 1 (1998) - Identical
DIN EN 301260 (2004-12) - Identical
NBN EN 301 260:2004 - Equivalent
CSA ISO/IEC 15505:2004 (R2014) - Identical
NEN ISO/IEC 15505:2003 - Identical
