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Do you know the CAT.8 Cabling?
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Do you know the CAT.8 Cabling?

Do you know the CAT.8 Cabling?

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Do you know the CAT.8 Cabling?  Do you want to know the CAT.8 Cabling? Maby the following questions and answers can help you!

Q1:What is Category 8 Cabling?

A: Category 8 cabling is a new category of cabling that has been developed to support 25GBASE-T and 40GBASE-T applications developed by the IEEE.

 

Q2 Who developed the Category 8 standard?

A The Category 8 standard was developed by the ANSI/TIA-568 standards body, more specifically, the TR42.7 committee. The document that details Category 8 cabling is ANSI/TIA-568-C.2-1, and was published in November 2016 as a standard, therefore Category 8 is no longer in a draft format.

 

Q3 What is unique about Category 8 cabling as opposed to Category 6A cabling or previous balanced twisted pair copper cabling categories?

A Category 8 cabling has a greater throughput capability; it can support transmission of data up to 40Gbps over balanced twisted pair copper cabling. The solution is a shielded solution--there is no unshielded variant. Therefore, careful attention must be paid to shield terminations when installing the solution. All previous categories of balanced twisted pair copper cabling supported a Permanent Link Length of 90m (295’) and a channel of 100m (328’). Category 8 has a maximum Permanent Link Length of 24m (78’) and a maximum Channel length of 30m (100’) when supporting 25Gbps and 40Gbps speeds. Category 8 cabling can support data speeds of 10Gbps and lower at a full 100m (328’) Channel configuration.  When field-testing Category 8 solutions, the installation is tested from 1MHz to 2000MHz, whereas Category 6A balanced twisted pair copper cabling is only field tested from 1MHz to 500MHz.

 

Q4: What connectors does Category 8 cabling use to perform at these higher frequencies?

A The ANSI/TIA Category 8 solution utilizes an 8 position modular 8 connector (commonly known as RJ45) and was designed to be backward compatible with the existing 8 position modular connectors that are utilized in structured cabling from Category 5e through to Category 6A. This was a key requirement from the active equipment manufacturers to maintain compatibility with the billions of RJ45 connectors in use around the world. The international standards body is following a similar approach, their Class I links are made up of Category 8.1 components, the connectors being backward compatible with the commonly used 8 position modular style (RJ45).

 

Q5 So what else are the international standards bodies doing concerning Category 8?

A The international standards bodies ISO and IEC have designated two cabling variants to support 25Gbps and 40Gbps; they are Category 8.1 and Category 8.2. As stated earlier, Category 8.1 components are used to construct Class I links. They are backward compatible with the RJ45 connector interface for categories 6A, 6 and 5e as specified in ISO/IEC 11801 and EN 50173. Category 8.2 components are used to construct Class II links. Category 8.2 components are backward compatible with components used to construct Class F and Class FA links. Category 8.2 connector interfaces ARE NOT BACKWARD COMPATIBLE with the RJ45 jacks of existing cabling.   The international standards bodies ISO and IEC are expected to publish a new version of ISO/IEC 11801 (Edition 3) during 2017.