
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Mapping functions for the employment of a circuit mode basic service and the supplementary service user-to-user signalling as a pair of on-demand inter-PINX connections
出版:International Organization for Standardization

专家解读视频
NEN ISO/IEC 17309:2000 - Identical
CSA ISO/IEC 17309:2004 (R2014) - Identical
KS X ISO/IEC 17309:2010 - Identical