Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


bigal_nz

635 posts

Ultimate Geek
Inactive user


#23487 30-Jun-2008 19:52
Send private message

Hi Folks,

I was looking at my demarc tonight.

It looks like I have essentially a Blue and White wire from the street, which are crimped to the Blue and White wire of the house.

Each crimp however is a three way crimp, and the third leg go off to a test termination unit, which looks a bit like a large radial capacitor.

The test termination unit has two legs, and one leg has the blue wire attached, one has the white. This seems to be wired in parallel.

Anyone have any ideas what it is?

Cheers

-Al

Create new topic
grb67
63 posts

Master Geek


  #141788 1-Jul-2008 09:15
Send private message

Test termination:    a sealed resistor/capacitor combination usually fitted within an ETP (External Terminating Point) to provide a remote line test capability independent of whether any CPE is connected to that line. It is either in the white box on teh outside of the building or at the first internal jackpoint. Haven't seen one installed in a new installation in a long time and they aren't installed in business demarcation terminations. Refer PTC 106: March 2008 http://www.telepermit.co.nz/PtcSpecs.html Be nice if all new homes were wired to this specification. :)

 
 
 

Shop Mighty Ape for electronics, games, computers books and more (affiliate link).
cyril7
8963 posts

Uber Geek

ID Verified
Trusted
Subscriber

  #141789 1-Jul-2008 09:15
Send private message

The test termination is a high resistance resistor (470kohms I seem to remember) in series with a capacitor, which is used by Telecoms automated line testing gear to check if your line is still there, it does this from time to time in the small wee hours. It is only required if you have a wiring service contract with Telecom. Being such a high impedance it has no effect on signals (including ADSL) so I would just leave it there, to simply cut it out would clearly indicate to the next tech who opens the demac that someone had been in there.

Cyril

bigal_nz

635 posts

Ultimate Geek
Inactive user


  #141921 1-Jul-2008 15:27
Send private message

Bugger, I disconnected the house and wired straight into the Demarc, no change in SNR margin. No change in synch speed, slight improvement in upspeed from 800 to 1100.

Bugga!

At 800, to exchange I am expecting better than 15300, and the SNR margin is too low at 6db.



cyril7
8963 posts

Uber Geek

ID Verified
Trusted
Subscriber

  #142103 2-Jul-2008 08:25
Send private message

Id say there is a bad leg, ie one line of the pair has a bad joint, at 800m get telecom in via your ISP, of course you may infact not be on the exchange you think.

Cyril

Create new topic





News and reviews »

HP Unveils Broadest Consumer Portfolio of AI-Enhanced Laptops
Posted 3-Mar-2024 18:09


Samsung Tab S9 FE Review
Posted 3-Mar-2024 18:00


Norton Genie Review
Posted 3-Mar-2024 17:57


Synology Introduces BeeStation
Posted 23-Feb-2024 14:14


New One UI 6.1 Update Brings Galaxy AI to More Galaxy Devices
Posted 23-Feb-2024 10:50


Amazon Echo Hub Available in New Zealand
Posted 23-Feb-2024 10:40


InternetNZ Releases Internet Insights 2023
Posted 20-Feb-2024 10:31


Seagate Adds 24TB IronWolf Pro Hard Drives for Multi-user Commercial and Enterprise RAID Storage Solutions
Posted 19-Feb-2024 16:54


Seagate Skyhawk AI 24TB Elevates Edge Security Capacity and Performance
Posted 9-Feb-2024 17:18


GoPro Releases Quik Desktop App for macOS and Introduces Premium+ Subscription Tier
Posted 9-Feb-2024 17:14


Ring Introduces New Ring Battery Video Doorbell Pro
Posted 9-Feb-2024 16:51


Galaxy AI Transforms the new Galaxy S24 Series
Posted 18-Jan-2024 07:00


D-Link launches AI-Powered Aquila Pro M30 Wi-Fi 6 Mesh Systems
Posted 17-Jan-2024 20:02


Newest LG 4K Lifestyle Projector Doubles as Art Objet
Posted 9-Jan-2024 15:50


More LG Smart TV Owners Set To Enjoy the Latest webOS Upgrade
Posted 9-Jan-2024 15:45









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.