For those of you who are unfamiliar with how telephone wiring works, an RJ45 (4-line) telephone cable is wired like so: Code: 1 2 3 4 5 6 7 8 | | | | | | | | [COLOR=Sienna]4d[/COLOR] [COLOR=DarkOrange]4c[/COLOR] [COLOR=SeaGreen]4b[/COLOR] [COLOR=Blue]4a 5a[/COLOR] [COLOR=SeaGreen]5b[/COLOR] [COLOR=DarkOrange]5c[/COLOR] [COLOR=Sienna]5d[/COLOR] What all that shit means is, if you had four telephone lines on a single RJ45 cable, you would split it into four separate jacks by sending the center pair of wires to Jack 1, the two wires on either side of the center to Jack 2, etc. Pretty simple once you've done it a couple of times. But Cat5 is done differently. First of all, a single Cat5 connection requires 4 wires instead of 2, so you can only run two Cat5 connections through a single RJ45 cable instead of four. But that's not such a big deal, since you can always use a switch to get as many extra connections as you need. No, the problem is the way the wiring is hooked up: Code: [COLOR=Black]1 2 3 4 5 6 7 8 | | | | | | | |[/COLOR] [COLOR=Blue]1a 2a 3a[/COLOR] [COLOR=Green]1b 2b[/COLOR] [COLOR=Blue]6a[/COLOR] [COLOR=Green]3b 6b[/COLOR] So, there are several things to consider. First, it's obvious that Cat5 wiring avoids using wires 4 and 5 for a single connection (which is all most setups ever use) in case you want to run a telephone line through the same cable. That's fine, there's nothing wrong with that. The problem is that Cat5 wiring doesn't even use pins 4 and 5 at the wall jack, which you know will only ever be used for network connections! (Presumably, if you ran a telephone line across the same cable, the wires for the phone line would go to a telephone jack so it wouldn't matter how the network jack was wired up.) Why is this a problem? Because it means that RJ45 network splitters (used to send two Cat5 connections along the same cable) absolutely must be wired differently than RJ45 telephone splitters, and it is absofuckingregoddamnlutely IMPOSSIBLE to find an RJ45 telephone splitter! Sure, I bet the phone company has a couple lying around somewhere, but nobody else does. Which means that I have to make my own goddamn splitters so I can send two phone lines across a cable with more than enough wires to handle it, because the only splitters I can buy don't damn well connect any of the wires to the pins that telephones are designed to use! This would've been a better layout for Cat5 wiring: Code: [/COLOR][/FONT][/COLOR][/COLOR][/FONT][FONT=Courier New][COLOR=Sienna][COLOR=Black]1 2 3 4 5 6 7 8 | | | | | | | |[/COLOR] [COLOR=Green][FONT=Verdana][COLOR=Black][FONT=Courier New][COLOR=Blue]3b[/COLOR] [COLOR=Green]3a[/COLOR] [COLOR=Blue]4b[/COLOR] [COLOR=Green]4a 5a[/COLOR] [COLOR=Blue]5b[/COLOR] [COLOR=Green]6a[/COLOR] [COLOR=Blue]6b[/COLOR][/FONT][/COLOR][/FONT][/COLOR][COLOR=Green][FONT=Verdana][COLOR=Black] Why would it have been better? Because the first Cat5 connection would still avoid wires 4 and 5, so they would still be open for either a telephone line or a second Cat5 connection to be included, and it would also mean that the fucking splitters would work the same no matter what you were trying to hook up -- whether it be two phone lines, two network lines, or one of each, they all would work fine. I need to send out another round of flyers to people: CALL ME BEFORE YOU DO ANYTHING! Except I wouldn't be able to answer, because the fucking wiring doesn't work.