Cat 3 (4,5) can have two or four pair (or up to 25 pair or more)<BR><BR>Don't be confused with "plain old phone wire" (like DIW) which is not certified, it just also happens to be unshielded ...

Here, Stuart Dover, General Manager of AEI Cables, explains the significance of a new Code of Practice for Category 3 Control fire performance cables. The signal and control equipment systems powered ...

There are many different types of ethernet cables, each fulfilling a specific purpose. If you were browsing the internet in the 90s, you likely used a Category 3 cable to facilitate your connection.