ISO/IEC 15052:2003现行
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Recall supplementary service
出版：International Organization for Standardization
专家解读视频
CSA ISO/IEC 15052:2004 (R2017) - Identical
DIN EN 301258 (2004-12) - Identical
NBN EN 301 258:2004 - Equivalent
NEN ISO/IEC 15052:2003 - Identical
BS ISO/IEC 15052:1997 - Identical
KS X ISO/IEC 15052:2010 - Identical
SS EN 301 258 Ed. 1 (1998) - Identical
