NF ETS 300215

Network aspects (NA). Metropolitan area network (MAN). Physical layer convergence procedure for 139,264 mbit/S.

Le présent document définit la procédure de convergence de la couche physique à 139,264 Mbit/s dans laquelle la couche à double bus à files d'attente réparties (DQDB) est mise en correspondance avec un système de transmission normalisé conformément aux Recommandations G.751 et G.703 du CCITT et fonctionnant à 139,264 Mbit/s comme des réseaux publics. Au-delà des dispositions des Recommandations G.751 et G.703 du CCITT, un temps de verrouillage de trame de 125 microsecondes doit être fourni pour accepter des canaux d'octets à n x 64 kbit/s.

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