NDI

NDI

Le Numéro de désignation d’installation (NDI) correspond, en télécommunications, au numéro principal (tête de ligne) d'une installation téléphonique privée disponible au niveau du réseau de l'opérateur le desservant.

Il doit techniquement être en mesure de supporter un contrat de raccordement.

Certains opérateurs, Free par exemple, utilisent ce sigle pour désigner les numéros de ligne en zone dégroupée (ou non) quand ils sont inactifs.


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