EN 300 425 : 1.3.1现行
PRIVATE INTEGRATED SERVICES NETWORK (PISN); SPECIFICATION, FUNCTIONAL MODEL AND INFORMATION FLOWS; CALL INTRUSION SUPPLEMENTARY SERVICE
出版：European Telecommunications Standards Institute
专家解读视频
This EN will endorse the ISO Stage 1 and 2 of Call intrusion supplementary service (ISO 14845). It is the version 2 of the ETS 300 425.
DS EN 300425 : 2004 - Identical
NBN EN 300 425 : 2003 - Identical
DIN EN 300425 : 2004 - Identical
NEN EN 300425 : 2003 - Identical
NF EN 300425 : 2003 - Identical
PN EN 300 425 : 2005 - Identical
