EN 301 161 : 1.2.1现行
MANAGEMENT OF THE EUROPEAN TELEPHONY NUMBERING SPACE (ETNS)
出版：European Telecommunications Standards Institute
专家解读视频
Describes the management of ETNS, including the number structure, the allocation of codes to the service described, number length and evolution from National numbers to pan-European to global numbers.
NBN EN 301 161 : 2002 - Identical
I.S. EN 301161:1999 - Identical
DIN EN 301161 : 2003 - Identical
DS EN 301161 : 2002 - Identical
NEN EN 301161 : 2002 - Identical
PN EN 301 161 : AUG 2005 - Identical
