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Topic # 114055 6-Feb-2013 14:26 Send private message

Hi,

I have been Telecom broadband since arriving from Australia in early 2008. The service and speed has been great up till 8 weeks ago when I switched to the 500Gig plan. ( I have 3 kids. 2 are teenagers who are constantly on the net) Since the change my connection speed has dropped from 2.1Meg to 1.4 Meg, even though there have been no changes to the line attenuation and SNR.

I logged this as a fault with Xtra, who have had a tech out to check for any issues from the property to the exchange, via the cabinet that I am connected to. According to them, no fault has been found.
I have had the master splitter/filter changed as well as the wiring (CAT6) at my expense all to no avail.
We have tried 3 different modems (Vigor and Netgear) with no change and all 3 show exactly the same line attenuation of 15dB and 8dB. Interleave is off.

Basically everything has been covered, checked and rechecked with no success.
My concern is that been on a 500Gig plan, I am now in a high usage pool like the good old Big Time plan, or somehow my speed is being artificially throttled.

I have been on ADSL since late 1999 and having been through all the initial teething issues of early broadband, I am confident in my knowledge of ADSL problem solving skills.

Any suggestions or feedback will be appreciated.

Regards

Mark

PS I did reboot the modem!

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Telecom NZ

  Reply # 756941 7-Feb-2013 14:03 Send private message

MarkSW
My concern is that been on a 500Gig plan, I am now in a high usage pool like the good old Big Time plan, or somehow my speed is being artificially throttled.


I see others have pointed out some possible issues, and you've decided to sign up for VDSL - that's fine, but for the sake of accuracy and anyone else reading this.

Customers on the 500G plan are treated no differently than Telecom retail customers on other plans. There is no 'artificial throttling' of any Telecom Retail customers (Unless they have gone overcap AND have elected to be slowed to pseudo-dialup speed)

Cheers - N


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Biddle Corp
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  Reply # 757212 8-Feb-2013 08:47 Send private message

fellaintga:
RunningMan:
fellaintga:
sbiddle: You'll definately need to install a master filter or sort your wiring out if you want VDSL2 to work, or even to deliver optimal ADSL2+.

That's one seriously big bridge tap showing up the bit loading graph..


Except he already has a master splitter. I am not sur how he was getting those speeds before if the line stats are the same. Still I can't wait to see what VDSL gives him.


I suspect it is the bold portion (my emphasis) that would need to be resolved. The bridge tap may well be prior to the filter, either in out of the premises.


Can you read the first post this has been eliminated splitter and wiring probably better than most of the wiring in the country.  I think before the profile change the modem was syncing higher than it should of and had a low SNR figure but probably the line had a quite a few errors or something compared to now as with that attenuation there is no was he should of got that speed before.  I have only seen that speed with lines less than 100M from the cabinet.


The splitter and wiring hasn't been eliminated - just because a master filter is installed doesn't mean that a fault hasn't developed or the filter was installed correctly. Both are scenarios that do occur.

Regardless of anybody else's view of what is and isn't wrong the bitloading graph clearly shows the cause of the problem which is the big blip approaching 2Mhz. There reastically only are a handful of reasons for such a massive blip, and it's likely to be a line stub either on the premises, strong interference from something around 2Mhz that is ingressing into the cable, or a line stub in the Chorus network.

I know wiring and issues like this is something Peter is spending a lot of time on lately and it's a shame for the OP that he has jumped ship from Telecom as he was probably in a situation to have had resources put into his issue to have it resolved.


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