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ETSI ETS 300 364
- Private Telecommunication Network (PTN); Inter-exchange signalling protocol; Do not disturb and do not disturb override supplementary services
- standard by European Telecommunications Standards Institute, 11/01/1994
- Publisher: ETSI
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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.
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