Why Can't I run two DSL lines in the same CAT5E cable??
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Posted by Tom on March 25, 2008, 9:29 pm
Please log in for more thread options each on each side of the yard. I decided to run them together in a single CAT5E cable to my two DSL modems using 4 wires of one DSL line and 4 wires for the other one. One line works perfect until I connect the other 4 wires for the 2n line then each DSL line dies! I can connect one or the other but not both. I would like to know why? Sure I can run two separate CAT5E cables and wire them to 568A or B standards but would I dont see why I couldnt run each DSL line in the same cable? Thanks! Thomas Redman Los Angeles, CA | ||||||||||||||||
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Posted by P.Schuman on March 25, 2008, 11:31 pm
Please log in for more thread options are these the raw DSL lines coming from the demarc ? ie - there are just 2-wires - with the high freq DSL signal riding on the same pair as your telco voice line. SO - I'm not exactly sure what "4 wires" you are talking about, unless you just extended the usual blue + blu/wht and the org + org/wht, etc | ||||||||||||||||
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Posted by Bill Kearney on March 26, 2008, 9:05 am
Please log in for more thread options > Sure I can run two separate CAT5E cables and wire them to 568A or B
> standards but would I dont see why I couldnt run each DSL line in the > same cable? DSL needs only one pair, not two. That's two wires, not four, for each DSL set up. You should be able to run this type of setup with absolutely no trouble at all. If you have trouble then it's either bad wiring or bad wire. There are 4 twisted pairs in a CAT5 bundle. Each based on a color: blue/blue-white, orange/orange-white, green/green-white, brown/brown-white. You should be able to put one DSL pair on, say, blue and the other on orange (or whatever combo you'd like). Just make sure you're sticking with one color/color-white pair for each line. Do not split pairs and do not combine pairs. Test your pairs and make sure you don't have a short somewhere. That would certainly cause the sort of trouble you're seeing. -Bill Kearney | ||||||||||||||||
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Posted by DTC on March 26, 2008, 10:01 am
Please log in for more thread options Tom wrote:
> I dont see why I couldnt run each DSL line in the
> same cable You certainly can. IF..IF...you indeed have TWO telco dial-tone/DSL circuits where you have two separate accounts from the telco with two telephone numbers and two DSL assignments, THEN you can extend them up to several hundred feet. Is that really what you have going on there? If it is, then you have a wiring problem. Keep the first telco circuit on the White/Blue pairs and second circuit on the white-orange pairs and it will work. | ||||||||||||||||
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Posted by Lloyd E. Sponenburgh on March 26, 2008, 1:17 pm
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> Of course there's the obvious problem of pair selection. Don't create
> a wiring maze where you end up with split pairs. You only need two > pairs out of the 4 pair cable. Don't double up pairs as that will > increase the crosstalk. Why two pairs, Jeff? My DSL comes in on a POTS line on one pair. LLoyd | ||||||||||||||||
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> each on each side of the yard.
>
> I decided to run them together in a single CAT5E cable to my two DSL
> modems using 4 wires of one DSL line and 4 wires for the other one.
>