ETS 300 362 : 20001现行
PRIVATE TELECOMMUNICATION NETWORK (PTN) - INTER-EXCHANGE SIGNALLING PROTOCOL CALL OFFER SUPPLEMENTARY SERVICE
出版：European Telecommunications Standards Institute
专家解读视频
Stage 3 of call offer supplementary service at Q ref pt. See DTR/ECMA-0002 (ECMA-TR/SVC) for service description. See ENV41005 for definition of stage 3. See ENV41004 for definition of Q reference point. To contain PICS proforma
DIN ETS 300362 : 1995 - Identical
NBN ETS 300 362 : 1995 - Identical
PN ETS 300 362 : 2005 - Identical
DIN ETS 300362 : 1995 - Identical
