NF EN 301656

Private Integrated Service Network (PISN) - Inter-exchange signalling protocol - Call priority interruption and call priority interruption protection supplementary services (V1.2.1)

Le présent document spécifie le protocole de signalisation utilisé au point de référence Q en support du service supplémentaire d'interruption de priorité d'appel et de protection d'interruption des priorités d'appel.

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