I just installed a relative's voice and data communciations in their new house and encountered a class blunder on my part. I ordered the usual NORDX Bix Rails, slots, RJ45 to BIX rails to be used to terminate the connections. A couple of us punched down the telecommunications side of things on to the Bix and I punched down one quick data connection before I left. I plugged it directly in to the cable modem, and wham everything came up. So I thought I would leave it at that and come back to the rest when I had more time.
Later that week I purchased a Wireless Linksys router and plugged everything in for them. However low and behold their connection on the to the PC starts flapping on and off! I got out the tester and started checking it out and got the following wiring layout:
1 2 3 4 5 6 7 8
2 7 3 4 5 6 1 8
I thought what the hell is this? Why the heck was it working on the Cable modem? With this kind of wiring mismatch nothing should have worked? I checked all the terminations again, which looked fine and then second guessed myself a few times before talking to a colleague very knowledgeable in this area. He said mmmmmm, this looks like a USOC set up but I've never heard of an RJ45 to BIX USOC rail. Well guess what!!!! There is! The mistake I made was that I sent in the spec sheet for a quote and it contained both the EIA/TIA 568A rail and the USOC rail. The account manager quoted me on the USOC rail and I didn't notice!
It is easily fixed with some simple repunching, but what a classic mistake!
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