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.


andynz

360 posts

Ultimate Geek
+1 received by user: 28
Inactive user


#127313 6-Aug-2013 09:25
Send private message

Hi guys

I have gone through the initiall process of getting VDSL to our office.  Via 3 suppliers of VDSL a preqal said the service would be marginal.  I sort of expected that but that was based on clothed service over existing Telecom line.  The VDSL would be naked over new line.  These are the details:

1) Existing copper pair, currently with ADSL, 1.7km from the roadside Dslam.  Existing ADSL download 13Mbs with Xnet. Torturous route for the cable over neighbours field.

2) Proposed new service - Naked VDSL.  1.3km from roadside Dslam.  Current 16 pair cable under driveway from office to roadside junction upstand. Not connected at this time.  5 less joins in the cable.

So the question is how does Chorus come back with a tested attenuation of (I think it was 15db, it was 2 more than worst allowed anyway) when the cable is not physically connected yet.  Apparently a technician came round and tested it be we have seen no one here and we live on site.

Isn't VDSL chicken or egg.  How do you know the attenuation when the copper pair are not even connected?

Cheers
Andy

View this topic in a long page with up to 500 replies per page Create new topic

This is a filtered page: currently showing replies marked as answers. Click here to see full discussion.

sbiddle
30853 posts

Uber Geek
+1 received by user: 9996

Retired Mod
Trusted
Biddle Corp
Lifetime subscriber

  #875995 12-Aug-2013 16:54
Send private message

The issue is more Chorus sticking to their 10.8dB maximum attenuation. This is not possible at that distance.

There are people out there who have connections that exceed this limit as installs have happened for a variety of reasons. Most of whom have connections they may feel are OK, but the impact they can have on the network in terms of crosstalk are catastrophic to other xDSL users and for this reason they should never have been provisioned.

VDSL gets around this with UPBO, but it can't fully eliminate the issues of FEXT and NEXT. Users with poor signal quality basically end up impacting users close to the ISAM.





coffeebaron
6304 posts

Uber Geek
+1 received by user: 3566

Trusted
Lifetime subscriber

  #876016 12-Aug-2013 17:54
Send private message

Get ADSL provisioned on the new line, then try a churn to VDSL and see how you go.




Rural IT and Broadband support.

 

Broadband troubleshooting and master filter installs.
Starlink installer - one month free: https://www.starlink.com/?referral=RC-32845-88860-71 
Wi-Fi and networking
Cel-Fi supply and installer - boost your mobile phone coverage legally

 

Need help in Auckland, Waikato or BoP? Click my email button, or email me direct: [my user name] at geekzonemail dot com


View this topic in a long page with up to 500 replies per page Create new topic








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.