ETS 300 361 : 20001现行
PRIVATE TELECOMMUNICATION NETWORK (PTN) - SPECIFICATION FUNCTIONAL MODEL & INFORMATION FLOWS CALL OFFER SUPPLEMENTARY SERVICE
出版：European Telecommunications Standards Institute
专家解读视频
Describes stage 1 and 2 of the call offer supplementary service. See ECMA DTR/ECMA-TR/SVC) for a description of the call offer supplementary service. See ENV 41 005 for definition of stage 1 and 2.
DIN ETS 300361 : 1995 - Identical
NBN ETS 300 361 : 1995 - Identical
PN ETS 300 361 : 2005 - Identical
ECMA 191 : 2ED 97 - Corresponds
DIN ETS 300361 : 1995 - Identical
