PrésentationCe que dit la norme TIA/EIA-568-B.2-1 pour les Catégories 5e et 6
INTEROPERABILITE
Les catégories 5e et 6 introduisent l’interopérabilité pour les systèmes de câblage : c’est la garantie pour un utilisateur final de pouvoir assembler des composants d’origines différentes, certifiés catégorie 5e ou 6 par les constructeurs respectifs, et d’obtenir ainsi une liaison complète (liaison Channel) catégorie 5e ou 6.
Pour garantir les performances de ces catégories, la norme spécifie les caractéristiques de chacun des composants, et particulièrement celles des cordons RJ 45 qui représentent un élément important dans la liaison complète.
Extrait de la norme
Telecommunications cabling, once specified uniquely for each telecommunications application, has evolved into a generic cabling system. Telecommunications applications now use ANSI/TIA/EIA-568-B1 to specify their cabling requirements. This has resulted in the continued developpement of high-speed applications and demonstrated the need for improved transmission performance and higher categories of twisted pair cabling.
The requirements in this standard are for 10 Homs category 6 balanced twisted pair cabling systems and components. Category 6 cabling provides higher performance than category 5e and recognizes advances in cabling technology. Category 6 shall be backward compatible with categories 3, 5 and 5e as specified in ANSI/TIA/EIA-568-B.1 and ANSI/TIA/EIA-568-B.2. Application running on the lower category cabling shall be supported by category 6. For category 6, the 8 positions modular jack interface shall maintained at the telecommunications outlet connector in the work area. If different category components are to mixed with category 6 components, then the combination shall meet the transmission requirements of the lower performing category. See table1 for matrix of mated components performance representative of backward compatibility. To ensure generic cabling system performance, components are specified to support interoperability when products from different manufacturers are mated.
Table 1- Matrix of backward compatible mated component performance
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| Category 3 | Category 5 | Category 5e | Category 6 | ||||||
| Modular Plug & Cords performance | Category 3 * | Category 3 | Category 3 | Category 3 | Category 3 | ||||
| Category 5 | Category 3 | Category 5 | Category 5 | Category 5 | |||||
| Category 5e | Category 3 | Category 5 | Category 5e | Category 5e | |||||
| Category 6 | Category 3 | Category 5 | Category 5e | Category 6 | |||||
| * Category 3 plug performance requirements are assumed to be less restrictive than category 5e | |||||||||
Transmission performance depends upon the characteristics of the cable, connecting hardware, cords and cross-connect jumpers, the total number of connections, and the care in which they are installed and maintained. This Standard includes laboratory and field test configurations and procedures that can be used to verify the components, cabling, and installation will meet this new specification.
6-3 Cords
Patch cords, requirement cords, and work area cords used for system moves, ads, and change are critical transmission performance. Category 6 cords and cordage shall meet the applicable requirements of clause 6.1 through 6.3 of ANSI/TIA/EIA-568-B.2 and clause 7.2.1.3 and 7.4.4 of this standard.
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