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.


8 posts

Wannabe Geek


Topic # 83387 15-May-2011 20:16
Send private message

I have just purchased a new DLINK 2730B router, this is working slower than my old DLINK 604T. So my investigations led to line quality.

I found this great tool DMT which will display the noise profile on my line from stats on the router.  

With all internal phone wiring  disconnected i get this view...

Can anyone tell me if I should be logging a call with Telecom to look connection? Are the gaps to be expected?

Downstream varies between 3 and 4Mbs with the new device and around 5Mbs with the old 604T.

Thanks Quentin.

 

Here's another view working through my house wiring, I can see it's not optimal.... 

 

Create new topic
26491 posts

Uber Geek
+1 received by user: 6037

Moderator
Trusted
Biddle Corp
Lifetime subscriber

  Reply # 469407 15-May-2011 20:38
Send private message

You really need to provide a lot more information about your connection.

Are you on a new ISAM that supports ADSL2+? Are your fed from an exchange or cabinet? How far are you from the cabinet or exchange?



8 posts

Wannabe Geek


  Reply # 469628 16-May-2011 13:35
Send private message

Thanks for responding..

Sorry, more info then.

The telecom wholesale site suggests that I am not cabinetised and direct off the plimmerton exchange.

However there's a cabinet at the end of my street PLM/D which isn't on the wholesale site but clearly exists.

So I don't know if I'm on a cabinet. Looking at google maps the road distance between my house and the exchange is 1.8 Km's.

I get an attenuation level download of 38.5 dB.

I guess I'm looking to see if I have enough of a case to log a call with Telecom.

Thanks

6188 posts

Uber Geek
+1 received by user: 1016

Trusted
Lifetime subscriber

  Reply # 469650 16-May-2011 14:44
Send private message

sm3rt: However there's a cabinet at the end of my street PLM/D which isn't on the wholesale site but clearly exists.

How big is it? There are small (<1 m high) cabinets which don't appear on the Wholesale maps, which seem to be only for phone (not broadband).

1904 posts

Uber Geek
+1 received by user: 287

Trusted

  Reply # 469674 16-May-2011 15:08
Send private message

Behodar:
sm3rt: However there's a cabinet at the end of my street PLM/D which isn't on the wholesale site but clearly exists.

How big is it? There are small (<1 m high) cabinets which don't appear on the Wholesale maps, which seem to be only for phone (not broadband).


Those small cabinets are usually passive distributors (ie a mess of cables, no cool gear). Technically speaking they are for anything over a phone line - dsl included. But since there are no actives in there, all dsl & pots services come from the exchange.

653 posts

Ultimate Geek
+1 received by user: 185

Trusted
Spark NZ

  Reply # 470518 18-May-2011 14:08
Send private message

I'd log a fault if I were you. That bit-loading looks a little unnatural.
However, that said, Telecom doesn't guarantee anything in terms of your sync rate etc - i.e. they may come out and test it and say "within spec", and you're not better off. Worth a try though.




My views are my own, and may not necessarily represent those of my employer.

2782 posts

Uber Geek
+1 received by user: 120


  Reply # 470619 18-May-2011 16:28
Send private message

According to this calculator;

http://fremnet.net/article/216/adsl-theoretical-speed-calculator

that attenuation would put you at around 2.7Km from the exchange. Even given that it looks like your throughput is a bit average. I'm about 0.5Km from my exchange (I could probably see it if I could get onto the roof) and I get around 10-12Mbps on a good day. My attenuation is around 16 dBm IIRC, but my graph in DMT doesn't have those holes in it.

Try unplugging any other phones on the same line and see if it makes any difference? (EDIT: Oh, you already did, sorry)

sbiddle:
Are you on a new ISAM that supports ADSL2+? Are your fed from an exchange or cabinet? How far are you from the cabinet or exchange?


How would one accurately determine all this?




21131 posts

Uber Geek
+1 received by user: 4215

Trusted
Subscriber

  Reply # 470634 18-May-2011 16:50
Send private message

Chances are that the gaps are in the AM broadcast band and you have an excessive quantity of crap internal wiring connected.

When you say disconnected, did you go to the demarc and cut all the connections to internal phones or just unplug them from the sockets?

Chances are they can do somthing about it if you tested it with just the ADSL router connected straight to the demarc with the minimum amount of non cat-5 (or even 3) rated cable between it.

Remember that most old houses have internal cable that has no business carrying non audio frequencies, and the street cables are not a great deal better.




Richard rich.ms



8 posts

Wannabe Geek


  Reply # 470736 18-May-2011 20:00
Send private message

Thanks all for the reply's.

By testing at the demark I did cut  all other extensions in the house physically off, but I was still on the end of about six metre's of white bell wire which connects to the black wire under the house.

Funny that AM is mentioned. Over the hill not line of site are the big Titahi bay radio masts, one assumes they pump out a lot of something. 

I've paid a lot of wiring maintenance over the years so I'll call in the Tech and see what happens.   I thought the graph in DMT was a really useful way to get an idea around what was right or wrong. I can imagine there are a lot of people with dogey internal wiring.
 

3634 posts

Uber Geek
+1 received by user: 753


  Reply # 470832 18-May-2011 22:26
Send private message

The transmitter towers in Titahi Bay broadcast the local AM stations around Wellington - National Radio (567AM), Newstalk ZB (1035AM) and 2YB (1161AM).

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 »

N4L helping TAKA Trust bridge the digital divide for Lower Hutt students
Posted 18-Jun-2018 13:08


Winners Announced for 2018 CIO Awards
Posted 18-Jun-2018 13:03


Logitech Rally sets new standard for USB-connected video conference cameras
Posted 18-Jun-2018 09:27


Russell Stanners steps down as Vodafone NZ CEO
Posted 12-Jun-2018 09:13


Intergen recognised as 2018 Microsoft Country Partner of the Year for New Zealand
Posted 12-Jun-2018 08:00


Finalists Announced For Microsoft NZ Partner Awards
Posted 6-Jun-2018 15:12


Vocus Group and Vodafone announce joint venture to accelerate fibre innovation
Posted 5-Jun-2018 10:52


Kogan.com to launch Kogan Mobile in New Zealand
Posted 4-Jun-2018 14:34


Enable doubles fibre broadband speeds for its most popular wholesale service in Christchurch
Posted 2-Jun-2018 20:07


All or Nothing: New Zealand All Blacks arrives on Amazon Prime Video
Posted 2-Jun-2018 16:21


Innovation Grant, High Tech Awards and new USA office for Kiwi tech company SwipedOn
Posted 1-Jun-2018 20:54


Commerce Commission warns Apple for misleading consumers about their rights
Posted 30-May-2018 13:15


IBM leads Call for Code to use cloud, data, AI, blockchain for natural disaster relief
Posted 25-May-2018 14:12


New FUJIFILM X-T100 aims to do better job than smartphones
Posted 24-May-2018 20:17


Stuff takes 100% ownership of Stuff Fibre
Posted 24-May-2018 19:41



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.