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AvantGuard's Industry Glossary

Category 5 (CAT-5) Wire:

A twisted cable that is designed to withstand a high signal rate. It is commonly referred to as Cat-5 wire and has since been superseded by the “Category 5e” specification. The Cat-5 cable is most frequently used to construct computer networks, and is also used to carry additional signals such as basic voice services, token ring, and ATM data.