EN 300 426 V1.3.1 (2004)现行
Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call intrusion supplementary service [ISO/IEC 14846 (2003), modified]
出版：European Telecommunications Standards Institute
专家解读视频
ONORM EN 300426:2004 - Identical
DIN EN 300426 (2004-12) - Identical
NEN EN 300426:2004 - Identical
PN EN 300 426:2005 - Identical
NBN EN 300 426:2004 - Identical
NF EN 300426:2004 - Identical
SS EN 300 426 Ed. 1 (1999) - Identical
