I don't think they are that hard, but I work more with data using 110 blocks rather then 66, and am looking for someone to explain how they work. I've looked on the web and seen a few sites but not a good enough understanding.
Here is what I think...
More are split, with 4 clips across and various ranges down.
Incoming lines terminate down the far left column. Extensions to jacks go on the far right column. The inner left column is used for cross connection, as well as inner right?
Anyone have a good site that explains this. It even gets more hard to understand when I see 4 or 5 blocks with a bunch of cross connect wire looping around between them.
Thanks,
-Matt