ITU-T Q.2957.1 FRENCH [ Active ]

DESCRIPTION D'ÉTAPE 3 DES SERVICES COMPLÉMENTAIRES DE TRANSFERT D'INFORMATION UTILISANT LE SYSTÈME DE SIGNALISATION D'ABONNÉ NUMÉRIQUE N° 2 – APPEL DE BASE Article 1 – Signalisation d'usager à usager

standard by International Telecommunication Union-T , 02/01/1995

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