EN 301 264 V1.2.1 (2004)現行
Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Advice of charge supplementary services [ISO/IEC 15050 (2003), modified]
出版：European Telecommunications Standards Institute
專家解讀視頻
ONORM EN 301264:2004 - Identical
DIN EN 301264 (2004-12) - Identical
NF EN 301264:2004 - Identical
SS EN 301 264 Ed. 1 (1998) - Identical
NBN EN 301 264:2004 - Identical
PN EN 301 264:2005 - Identical
NEN EN 301264:2004 - Identical
