EN 301 919 V1.1.1 (2004)现行
Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Single step call transfer supplementary service [ISO/IEC 19460 (2003), modified]
出版：European Telecommunications Standards Institute
专家解读视频
DIN EN 301919 (2004-12) - Identical
ONORM EN 301919:2004 - Identical
NEN EN 301919:2004 - Identical
PN EN 301 919:2005 - Identical
NF EN 301919:2004 - Identical
NBN EN 301 919:2004 - Identical
