Category 3 cable, commonly known as Cat 3 or station wire, is an unshielded twisted pair (UTP) cable designed to reliably carry data up to 10 Mbit/s, with a possible bandwidth of 16 MHz. It is part of a family of copper cabling standards defined jointly by the Electronic Industries Alliance and the Telecommunications Industry Association.
Unlike Cat 4 and Cat 5, Cat 3 is still recognized by TIA/EIA-568-B, its defining standard. Cat 3 is still used in telephone wiring.
Read more about Category 3 Cable: Networking
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