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Power Over Ethernet Interoperability Guide by Sanjaya Maniktala

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Categories of Ethernet Cable
In principle, we can implement Ethernet technology not only over unshielded twisted pair (UTP), but also shielded twisted pair (STP), coaxial wire, or even optical fiber. However, in this book we are going to focus only on the ubiquitous UTP, since for most applications, UTP happens to be the most cost-effective, popular, and prevalent choice. In this section we will list the key cable categories that make them either suitable or unsuitable for Ethernet applications. We have also summarized key applications versus cable categories in Table 1.2.
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TABLE 1.2   Summary of Cable Categories and Applications
The ...

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