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Q: Can I install Category 3 cable or should I go with Category 5e or Category 6?

A: It depends on what applications you plan on running over the network. Category 3 4-pair cables, due to their bandwidth limitations, should not be used for any data applications. If it is used, Category 3 should only be used for dedicated voice circuits. Keep in mind that by installing Category 3 4-pair cable, you are severely limiting what that cable may be used for. For that reason, Category 3 is typically used only as voice backbone cable between telecommunication rooms. It will never be used for anything else. It is recommended to use the same category cable for voice and data, regardless of whether it is Category 5e, 6 or 6A. This permits greater flexibility in how circuits are utilized.

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