ISO/IEC 15506:2003现行
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Message Waiting Indication supplementary service
出版：International Organization for Standardization
专家解读视频
NEN ISO/IEC 15506:2003 - Identical
KS X ISO/IEC 15506:2014 - Identical
BS ISO/IEC 15506:1997 - Identical
SS EN 301 255 Ed. 1 (1998) - Identical
KS X ISO/IEC 15506_2003:2004 - Identical
KS X ISO/IEC 15506:2007 - Identical
DIN EN 301255 (2004-12) - Identical
NBN EN 301 255:2004 - Equivalent
CSA ISO/IEC 15506:2004 (R2017) - Identical
