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CUTTING OUT THE CROSS TALK

 The Unshielded solution

It is hardly surprising that the question ‘shielded or unshielded?’ will inevitably come up when investment decisions for local data networks or structured office cabling are made. But that does not mean that a total transition from copper to shielded cabling is inevitable? If installed correctly, both shielded and unshielded technologies offer sufficient reserves for applications up to and including 10GbE. You can reach your goals with unshielded cabling, providing you make sure the conditions are right and you take care to select the right quality.

As explained above, use of traditional unshielded cabling means distances between individual components need to be increased as much as possible. However, the latest generation of unshielded cables can, in fact, offer ANEXT reserves that were previously only possible with shielding. Choosing the best possible quality of unshielded cable is vital. If opting for 10GbE-compatible class EA cabling, the user has to find the best solution, in technological terms, to ensure the LAN will continue to work reliably in the long term. After all, your investment should keep operating for at least 15 years and longer without error. Once a network has been installed or upgraded, it should outlive several consecutive generations of active equipment. If, after installation, you find out your choice of cabling does not offer the performance you had hoped for when switching from 1 to 10GbE, it is generally much too late to take corrective measures.

                               Choosing wisely
So which cabling is the best choice to fulfil the demands of 10G?

A safe bet would be to choose cabling specified in accordance with class EA as stipulated by ISO/IEC 11801 coupled with connection technology in accordance with Cat. 6A as stipulated by IEC 60603-7-41/-51. Compared with Telephone Industry Association requirements, this standard has stricter regulations regarding transmission parameters. Therefore, it is better equipped to cope with the challenges that the future will bring.

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