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NF ETS 300451

Business TeleCommunications (BTC) - Ordinary quality voice banwidth 4-wire analogue leased line (A4O) - Connection characteristics and network interface presentation

Edition date: 2000-12-01
In Force
Available languages: French
Summary: La présente norme spécifie les exigences techniques et les principes d'essai relatifs aux caractéristiques de connexion et aux caractéristiques physiques et électriques de l'interface réseau des liaisons louées analogiques, 4 fils, de qualité ordinaire (A40) dans la bande vocale, fournies dans le cadre de l'ensemble minimal prévu par la Directive du Conseil sur l'application de la fourniture de réseau ouvert (ONP) aux liaisons louées (92144/CEE). Une connexion est présentée aux points de terminaison de réseau (NTP) via des interfaces et comprend tout équipement pouvant fournir le NTP. Les signaux entre terminaux sont susceptibles de subir des dégradations au cours de leur transfert sur la connexion. Les limites de ces dégradations sont définies dans la présente norme bien qu'en pratique, les performances globales puissent être considérablement supérieures. La liaison louée fournit l'accès à la bande vocale (300 Hz - 3 400 Hz) sans restrictions sur l'utilisation des fréquences. Les exigences de la présente norme ont été choisies essentiellement pour la transmission téléphonique, bien qu'il n'y ait aucune restriction sur l'utilisation de la liaison louée pour d'autres types de trafic. La présente norme s'applique aux liaisons louées, y compris à temps partiel, dont l'établissement et la libération n'exigent ni échange de protocole ni autre intervention au NTP. Le fournisseur de liaison louée ne peut pas effectuer les essais spécifiés dans cette norme ni surveiller la performance pendant que la liaison est en service, c'est-à-dire en train de transporter le trafic des usagers. Les essais sont donc conçus pour la mise et la remise en service, bien qu'il ne soit pas obligatoire de les effectuer à chaque fois. La présente norme couvre les caractéristiques physiques, mécaniques et électriques de l'interface réseau et spécifie les essais de conformité relatifs aux exigences de connexion et à l'interface réseau.

Keywords: TELECOMMUNICATION|NETWORK INTERCONNECTION|INTERFACES|CHARACTERISTICS
ICS: 33.040.40-Data communication networks Ethernet
CTN:

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