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Join Date: Sep 2007
Location: Give a monkey a brain...
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UTP is most commonly used. The shield reduces...interference, but makes the connections more complicated and expensive.
STP is for specialty applications that 'require' a grounded shield, used with grounded connectors. There is a 9th wire in the jacket, that is connected to the shield. I think it's attached to the chassis ground of the attached devices. You'd also need shielded patch cords.
I have read of Crestron DM and some HDMI extenders 'requiring' STP, but I think most of the time the signal passes fine without it. The shield can help to limit interference, reducing device troubleshooting if there is a problem.
Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense. -Buddha
Give a monkey a brain and he'll swear he's the center of the universe. -Fishbone