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594 posts

Ultimate Geek
+1 received by user: 65

Topic # 31176 7-Mar-2009 17:39
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While working in the roof I wanted to move the  2 wire cable the was hanging up in the rafters over a little.
Unfortunately when I did this, the cable popped out of the demarc...

I figured since I had botched it, I may as well run the cat6 I have straight to the demarc point.

My "demarc" outside turned out not to be a true demarc. It was just a tiny plastic box with cable going in (no cut/terminated/screwdowns inside) then coming out and going up into the roof.
I then pulled the cable out from under the eave (could not reach it inside the crawl space) and all I got were 3 bare wires. Red blue black. This Red blue black goes directly to the telephone pole without any termination inbetween.

I stripped the wires back and used a butt-set to see what I could get tone off it and I got nothing! ><
I tried all combinations (bar combining 2 into 1 as I was at the top of a ladder frustrated at the time).

What would be the best way to get in back in action again? Is there something that needs to be done to the 3-wire before I can get tone again?

My current jacks were all 2 wire, coming off the original 2 wire cable. Very old thick black power-like cable. The cable going to the "demarc" is newer gel filled type.

Help appreciated. And fast....have to be at mums house borrow the net to do this ;)

note: I do have wiring and maintenance, but I guess I can cancel that now.

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6439 posts

Uber Geek
+1 received by user: 379


  Reply # 199860 8-Mar-2009 09:11
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Hi, there is no 3wire system (except within your home post a 3wire master jack which you dont have) the rest of the network is all 2wire. I have not seen 3wire drop lines, maybe the existed before my time, but normal pairing is white/blue and red/black, I suggest the white wire is back down the cable and broke when you pulled it out, and hence until you connect to the white/blue pair you will not get your line, you may need to cut the line back a bit.

Maybe you should call a Telecom contractor, whats odd is you have a butinsky but dont know how to trace a line?


594 posts

Ultimate Geek
+1 received by user: 65

  Reply # 199884 8-Mar-2009 11:55
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This morning I found the white leg 5cm (!!!) up the sheath. Couldn't beleive it... Before I read this - but I will credit you cyril7 ;)

I'm quite new to the telecoms thing. My background is networks on the software side. My job for the past 4 months has been telco / pabx switch management and only in the weekends I do true cabling / jacks/ pulling etc. I think the whole 2-wire 3-wire thing threw me off a bit when I encountered that cable.

Now I have terminated the incoming line with a jack at the eave. Cat6 running from my new 'demarc' jack into my patch panel (which is currently just jacks lying in a cupboard).

ADSL sync speeds inproved from 2.8-3.2DN to 3.8DN/0.9UP.

Before doing this I received an email from Telecom;
"Thanks for contacting us regarding your broadband speed issue.
My testing from this side indicates there may be a fault with your line that's causing a reduced connect rate."

I will see if their test shows anything different.

Cheers for the assistance.

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