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.




1309 posts

Uber Geek
+1 received by user: 323


Topic # 228554 11-Jan-2018 11:56
Send private message quote this post

Just had a fault fixed on my VDSL line ... was getting 70/30 speeds, then the storm knocked out the local cabinets and after Chorus fixed that I was back online at 18/9, not so nice I thought, so got a fault logged and let 2Degrees do al their testing stuff to no avail so I asked them to log a Chorus job yesterday.

 

The Chorus guy arrived this morning (nice and quick!), plugged his widgets in and couldn't get a tone signal at all .. walked off to the grey mushroom thing with the wires in it and found one wire completely snapped, joined it back up and back to 70/30 again!

 

Both of us puzzled as to how I was even getting any internet at all!

 

So can VDSL sync up with only a single wire ?


Filter this topic showing only the reply marked as answer Create new topic
5449 posts

Uber Geek
+1 received by user: 1551

Trusted

  Reply # 1936142 11-Jan-2018 12:01
One person supports this post
Send private message quote this post

Single wire being a single core? Google seems to have mixed results.
Was probably just a wet cable or join.

Some techs are quite imaginative with fault descriptions.




7224 posts

Uber Geek
+1 received by user: 2290

Subscriber

  Reply # 1936144 11-Jan-2018 12:08
Send private message quote this post
 
 
 
 


3225 posts

Uber Geek
+1 received by user: 1022

Subscriber

  Reply # 1936146 11-Jan-2018 12:09
2 people support this post
Send private message quote this post

Yea absolutely possible. Just with seriously degraded performance. Probably wasn't fully broken but dead close to being broken that a strong breeze would of broken it.

 

Yet another reason to get on to fibre the moment it is available. I suspect come 2020 the response to fixing that fault will be, fibre is available, upgrade to it.


488 posts

Ultimate Geek
+1 received by user: 76

Subscriber

  Reply # 1936151 11-Jan-2018 12:13
Send private message quote this post

I can vouch for a single wire VDSL connection. Have seen and actually fixed the issue myself.

The speed difference is huge





13 posts

Geek
+1 received by user: 10


  Reply # 1936152 11-Jan-2018 12:17
2 people support this post
Send private message quote this post

Amazing as it seems, DSL can work on one wire, but not very well as you have experienced.

 

My DSL at my new house was rubbish so I got Chorus to investigate.  Turned out that the internal wiring from the ETP to Master jack was incorrect - Orange & White wire at ETP and Yellow & White wire at Master jackpoint. Despite only one "leg" of the circuit being connected, the interwebs continued (albeit rather lethargically) to flow.

 

If there had been a PSTN service on the landline it would have been obvious due to lack of dialtone.

 

DSL is not as straight-forward as you might think - it can be "working" but not connected correctly.

 

This is a big issue when ISP helpdesks will check if you can get a webpage to load - then tell you your problem "is most likely due to network congestion". 

 

Wiring faults in buildings are a large contributor to poor internet experience.

 

 

 

 

 

 

 

 

 

 

 

 


52 posts

Master Geek
+1 received by user: 22


  Reply # 1936154 11-Jan-2018 12:20
One person supports this post
Send private message quote this post

Yep, Single side disconnect is a common DSL/Phone fault, results in degraded DSL sync and no dialtone.

 

From an ISP perspective we commonly see this reflected in a halved Upload or Download rate on ADSL (VDSL can be significantly worse)




1309 posts

Uber Geek
+1 received by user: 323


  Reply # 1936208 11-Jan-2018 13:13
Send private message quote this post

Thanks .. was puzzling as it didn't seem right that it could just sort of work :-)


41 posts

Geek
+1 received by user: 5


  Reply # 1937451 12-Jan-2018 03:37
Send private message quote this post

Yes def possible, although sync rates will likely halve...


112 posts

Master Geek
+1 received by user: 26


  Reply # 1937452 12-Jan-2018 04:59
Send private message quote this post

I had a similar experience where the phone was dead but adsl working, due to a bad connection.

I wondered if the poor connection was simply acting like a capacitor (high pass filter) and/or there was an earth return loop?

6000 posts

Uber Geek
+1 received by user: 910

Trusted
Lifetime subscriber

  Reply # 1937474 12-Jan-2018 07:43
Send private message quote this post

*adds to the chorus*

 

Yep, back in the old days it caused my 12 Mb/s ADSL2 to drop to 1.5 Mb/s. I then had to argue with TelstraClear for a week because they refused to acknowledge that there was a problem, but eventually sent a tech out who fixed it in 5 minutes.


2150 posts

Uber Geek
+1 received by user: 723

Subscriber

  Reply # 1937669 12-Jan-2018 13:14
Send private message quote this post

Lastman: I had a similar experience where the phone was dead but adsl working, due to a bad connection.

I wondered if the poor connection was simply acting like a capacitor (high pass filter) and/or there was an earth return loop?


My understanding is that DSL is simply high frequency AC. So even stray capacitance between the broken leg and another leg from an unrelated pair, or even the mass of earth. Can still allow enough signal through to allow the connection to partly work.

I had fun with a fault on my underground leadin awhile ago. Phone would keep failing and ADSL would get really slow. The usual 48V idle voltage would drop as low as 2.5V, but the ADSL managed to work through that. Telecom had to visit approx 10 times, until it was traced to the 2 legs in the cable intermittently shorting together. The technician said it is unusual for that to happen without also having leakage to earth.

Getting fibre installed from scratch was far easier to deal with.





Filter this topic showing only the reply marked as answer Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Spark doubles down on wireless broadband
Posted 24-Jan-2018 15:44


New Zealand's IT industry in 2018 and beyond
Posted 22-Jan-2018 12:50


Introducing your new workplace headache: Gen Z
Posted 22-Jan-2018 12:45


Jucy set to introduce electric campervan fleet
Posted 22-Jan-2018 12:41


Hawaiki cable system will be ready for service in June 2018
Posted 22-Jan-2018 12:32


New Zealand hits peak broadband data
Posted 18-Jan-2018 12:21


Amazon Echo devices coming to New Zealand early February 2018
Posted 18-Jan-2018 10:53


$3.74 million for new electric vehicles in New Zealand
Posted 17-Jan-2018 11:27


Nova 2i: Value, not excitement from Huawei
Posted 17-Jan-2018 09:02


Less news in Facebook News Feed revamp
Posted 15-Jan-2018 13:15


Australian Government contract awarded to Datacom Connect
Posted 11-Jan-2018 08:37


Why New Zealand needs a chief technology officer
Posted 6-Jan-2018 13:59


Amazon release Silk Browser and Firefox for Fire TV
Posted 21-Dec-2017 13:42


New Chief Technology Officer role created
Posted 19-Dec-2017 22:18


All I want for Christmas is a new EV
Posted 19-Dec-2017 19:54



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.

Alternatively, you can receive a daily email with Geekzone updates.