ETS 300 364 : 20001现行
PRIVATE TELECOMMUNICATION NETWORK (PTN) - INTER-EXCHANGE SIGNALLING PROTOCOL DO NOT DISTURB & DO NOT DISTURB OVERRIDE SUPPLEMENTARY SERVICE
出版：European Telecommunications Standards Institute
专家解读视频
Do not disturb and do not disturb override supplementary services at Q. 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.
PN ETS 300 364 : 2005 - Identical
NBN ETS 300 364 : 1995 - Identical
DIN ETS 300364 : 1995 - Identical
DIN ETS 300364 : 1995 - Identical
