How do ISP's determine estimate speeds for VDSL?

Forums › New Zealand Broadband › How do ISP's determine estimate speeds for VDSL?

1 | 2 | 3

371 posts

Ultimate Geek

#974885 27-Jan-2014 01:48

Also would like to add-on to 1+ for Snap. I'm not going to repeat what hio77 & sidefx said above but you get the idea. The fritz box that also comes with Snap connections is also wonderful to play around with.

insane

3239 posts

Uber Geek

ID Verified

Trusted

#974887 27-Jan-2014 03:32

Do Slingshot provide VDSL over their own equipment or do they wholesale though Chorus, If it's the former then it's conceivable that their pre-qualification results may be different/better than that of snap.

Obviously sync rates are only part of the full picture, so as with any contract, do your homework and find out what you're getting into before signing anything.

hio77

12999 posts

Uber Geek

ID Verified

Trusted

Lizard Networks

#974888 27-Jan-2014 03:49

insane: Do Slingshot provide VDSL over their own equipment or do they wholesale though Chorus, If it's the former then it's conceivable that their pre-qualification results may be different/better than that of snap.

Obviously sync rates are only part of the full picture, so as with any contract, do your homework and find out what you're getting into before signing anything.

figured by the OP stating cabinet in a post, it would have been chorus gear, but it is interesting to consider if slingshot are providing vdsl from their own equipment too, what sort of profiles they would offer in comparison to chorus's

homework is absolutely the best thing to do, i personally go as far as looking into detail the peering for an isp where possible..

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

Slingshot

1004 posts

Uber Geek

Trusted

Slingshot

#975046 27-Jan-2014 13:17

At the moment we do VDSL only over Chorus equipment. It sounds to me like who you spoke with read directly from the wireline prequal results. From having seen a few accounts before and after connection the prequal rates for VDSL that we get don't seem all that accurate (looks like sidefx has mentioned this actually and they sound like they're on the money).

I'd say Snap's estimate is a pretty good one. 150m from your cabinet ~45Mb/s down is not an unreasonable estimation. There's a lot to consider but I'd suspect you'd be getting more than ~26Mb/s

Cheers,
Chris

www.slingshot.co.nz

www.twitter.com/SlingshotNZ

https://www.facebook.com/SlingshotNZ

BigPipeNZ

1170 posts

Uber Geek

Trusted

BigPipe

#975071 27-Jan-2014 13:44

If everybody is using Chorus gear for VDSL (which I think they are) then your sync speeds are going to be basically the same no matter which ISP you go with, assuming you are comparing like for like on house wiring, modem etc.

The estimate from Chorus is just an estimate - it can be way off in either direction,(although usually undercalls it.)

What really makes a difference to your actual experience of using VDSL (apart from the stuff I mention above that you can sort yourself - wiring and modem) is other stuff - like how much international capacity your ISP has per customer, what they cache locally etc etc.

So basically what I am saying is that going by the different sync speeds ISPs quote you is pretty pointless.

It's kinda like choosing an estate agent based on how much they think your house is worth :D

bigpipe.co.nz
https://www.facebook.com/BigPipeNZ
https://twitter.com/BigPipeNZ

Coil

6614 posts

Uber Geek
Inactive user

#975076 27-Jan-2014 13:53

BigPipeNZ:

It's kinda like choosing an estate agent based on how much they think your house is worth :D

Best quote 2014

(Insert sync speeds on wheel)

To add value here.
No matter what ISP you use it will be the exact same synchronization speed. Local or international may vary slightly. The more well known ISP's or well setup i would stick to. I could quote you 30a VDSL profile and get 200Mbp/s or 8b and get 33. Doesnt matter what the quote is the line will perform to its best given you dont reboot the modem 1000 times during DLM. (Like i did, Thats what happens when your a trial connection)

It really comes down to who has the best data/price point and if you want voice.

Cheers

danielsiva

21 posts

Geek

Trusted

#975080 27-Jan-2014 14:05

As a (very) general guide, you could use something like this to find your estimated sync speed based on your current attenuation - http://www.speedguide.net/dsl_speed_calc.php

GoodSync

GoodSync. Easily back up and sync your files with GoodSync. Simple and secure file backup and synchronisation software will ensure that your files are never lost (affiliate link).

solaybro

628 posts

Ultimate Geek

Trusted

#975125 27-Jan-2014 14:42

danielsiva: As a (very) general guide, you could use something like this to find your estimated sync speed based on your current attenuation - http://www.speedguide.net/dsl_speed_calc.php

I know this is a rough guide but according to this site and another one I used once I am about 700m from the cabinet but the closest cabinet is 130m from me. So maybe I am not connected to the cabinet I think I am.

Is there a way to find out what cabinet I am connected to and the actual length of the cabling underground? Maybe the cables goes down another street doubles back then comes down mine.

BigPipeNZ

1170 posts

Uber Geek

Trusted

BigPipe

#975129 27-Jan-2014 14:48

solaybro:
danielsiva: As a (very) general guide, you could use something like this to find your estimated sync speed based on your current attenuation - http://www.speedguide.net/dsl_speed_calc.php

I know this is a rough guide but according to this site and another one I used once I am about 700m from the cabinet but the closest cabinet is 130m from me. So maybe I am not connected to the cabinet I think I am.

Is there a way to find out what cabinet I am connected to and the actual length of the cabling underground? Maybe the cables goes down another street doubles back then comes down mine.

Physical distance to the cabinet does not necessarily equate to the length of the copper line between you and the cabinet.
As you say, It might be that the copper goes up one side of the street and back down again or something like that.

The line attenuation tells you the length of the copper (which is how Chorus estimate the speed)

bigpipe.co.nz
https://www.facebook.com/BigPipeNZ
https://twitter.com/BigPipeNZ

Coil

6614 posts

Uber Geek
Inactive user

#975131 27-Jan-2014 14:49

solaybro:
danielsiva: As a (very) general guide, you could use something like this to find your estimated sync speed based on your current attenuation - http://www.speedguide.net/dsl_speed_calc.php

I know this is a rough guide but according to this site and another one I used once I am about 700m from the cabinet but the closest cabinet is 130m from me. So maybe I am not connected to the cabinet I think I am.

Is there a way to find out what cabinet I am connected to and the actual length of the cabling underground? Maybe the cables goes down another street doubles back then comes down mine.

As he stated its a general guide...
Copper is a metal and does vary in quality. I live 20m from a cabinet and get 45Mbp/s down and 12DB attenuation..

Jase2985

13461 posts

Uber Geek

ID Verified

Lifetime subscriber

#975335 27-Jan-2014 20:00

the distance is based on your attenuation value. if you think you live 130m away and its telling you its about 700 (that would be a perfect copper cable based on your attenuation) then you dont have great connection to the cabinet.

I live about 60m from my cabinet, the page above says 450m, so i dont have a super good connection, but its good enough to get me 62/10 on a 17a profile

Coil

6614 posts

Uber Geek
Inactive user

#975352 27-Jan-2014 20:20

Jase2985: the distance is based on your attenuation value. if you think you live 130m away and its telling you its about 700 (that would be a perfect copper cable based on your attenuation) then you dont have great connection to the cabinet.

I live about 60m from my cabinet, the page above says 450m, so i dont have a super good connection, but its good enough to get me 62/10 on a 17a profile

Stop k, I live 20m away and get 48/10....

hio77

12999 posts

Uber Geek

ID Verified

Trusted

Lizard Networks

#975355 27-Jan-2014 20:22

TimA:
Jase2985: the distance is based on your attenuation value. if you think you live 130m away and its telling you its about 700 (that would be a perfect copper cable based on your attenuation) then you dont have great connection to the cabinet.

I live about 60m from my cabinet, the page above says 450m, so i dont have a super good connection, but its good enough to get me 62/10 on a 17a profile

Stop k, I live 20m away and get 48/10....

your attenuation would indicate far longer mind you..

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

NonprayingMantis

6434 posts

Uber Geek

#975364 27-Jan-2014 20:35

Jase2985: the distance is based on your attenuation value. if you think you live 130m away and its telling you its about 700 (that would be a perfect copper cable based on your attenuation) then you dont have great connection to the cabinet.

I live about 60m from my cabinet, the page above says 450m, so i dont have a super good connection, but its good enough to get me 62/10 on a 17a profile

Or, much more likely, is that the copper doesn't actually run in a straight line from his house to the cabinet.

Coil

6614 posts

Uber Geek
Inactive user

#975367 27-Jan-2014 20:37

hio77:
TimA:
Jase2985: the distance is based on your attenuation value. if you think you live 130m away and its telling you its about 700 (that would be a perfect copper cable based on your attenuation) then you dont have great connection to the cabinet.

I live about 60m from my cabinet, the page above says 450m, so i dont have a super good connection, but its good enough to get me 62/10 on a 17a profile

Stop k, I live 20m away and get 48/10....

your attenuation would indicate far longer mind you..

I followed the cable itself given i know where it runs. CoffeeBaron came for the adventure with me. Its either because i was on the VF trial and rebooted the modem 200 times or its using lead cables.

1 | 2 | 3