ITU-T D 12 FRENCH-1993 MEASUREMENT UNIT FOR CHARGING BY VOLUME IN THE INTERNATIONAL PACKET-SWITCHED DATA COMMUNICATION SERVICE《国际分组交换数据通信业务中的根据容量计费的测算单位》.pdf

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1、UNION INTERNATIONALE DES TLCOMMUNICATIONS5)4 4 D.12SECTEUR DE LA NORMALISATIONDES TLCOMMUNICATIONSDE LUIT02).#)0%3 . 2!58 $% 4!2)de la dfinition des messages de transmission de donnes, galement appels “squences compltes depaquets” 5,recommande lunanimit(1) dfinition du segment: lunit de mesure utili

2、se pour la taxation du volume dinformations transmises dansun service commutation par paquets est indpendante de la longueur maximale des paquets. Elle est appele segment etsa longueur est de 64 octets1);(2) rgle dutilisation: la quantit de donnes taxables contenue dans chaque message est exprime en

3、 nombre desegments et arrondie lunit suprieure.Rfrences1 Recommandation du CCITT Catgorie dusagers du service international des rseaux publics pour donnes etdes rseaux numriques avec intgration des services, Rec. X.1.2 Recommandation du CCITT Services internationaux de transmission de donnes et serv

4、ices complmentairesofferts aux usagers des rseaux publics pour donnes, Rec. X.2.3 Recommandation du CCITT Service complmentaire dassemblage et de dsassemblage de paquets (ADP) dansun rseau public pour donnes, Rec. X.3.4 Recommandation du CCITT Interface entre quipement terminal de traitement de donnes (ETTD) etquipement de terminaison du circuit de donnes (ETCD) pour terminaux fonctionnant en mode-paquet etraccords un rseau public de transmission de donnes par liaison spcialise, Rec. X.25.5 Ibid., 4.3.5.1)Ltude de la longueur attribuer au segment est appele se poursuivre.

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