punchdown technique

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 Question by Mino Christante posted 27 Oct 2007
 punchdown technique
I have had issues getting a successful punchdown on network drops. What is the best 'technique' to punchdown the wires to ensure there is a clean install on each wire on a cat-5. Specifically, I am talking about the network drop in the respective office, as well as back at the block.

Also, is there a simple with to certify the connection, like just use a router and laptop on each end and ping?
 Answer by Dmitri Abaimov posted 25 Dec 2007
Dear Mino,

If you are using a good punch down tool that has the right blade, the connection is almost guaranteed. Just make sure that you

#1: use an actual punch down tool and not one of those that only push the wires in without a punch. If the bald does not move against the handle, it's not a punch-down tool, it's a push-down. The latter makes it is rather difficult to make a good connection, especially if the jack/port on the block has already been terminated before.

#2: hold the tool vertically so the blade cuts the wire at a right angle and pushes the entire length of the wire that's underneath the blade evenly.

#3: For a wall jack termination make sure the jack is resting against a solid surface. If it moves, it makes the punch less effective

As far as certification, the name implies that you have to use an instrument that's certified for the task itself. Simple NIC/switch connection would not certify the connection but it is sure to test it. That is, if it works, it passed the simply binary test no matter what the actual electrical properties of the connection. For the electrical properties you are definitely going to need a specialized test instrument.

Dmitri Abaimov, RCDD

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