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391 posts

Ultimate Geek

# 77601 18-Feb-2011 13:27
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This morning I had an approx 30 minute downtime in ADSL from 9:15-9:45am, where 2 different ADSL modems both reported Line State = Down.
(I had 2 adsl modems to test)

With Xnet naked broadband.
Called Xnet, just got the usual response, check modem, cables, line, restart.

Previous to this outage, typical line rates were:
(using 2 different modems, Dynalink RTA1320v6, & an old Conexant PT-3812)
Downstream: 7500 Kbps
Upstream: 750 Kbps

And typical speed tests using resulted in approx:
Down: 6.5 Mbps
Up: 0.65 Mbps

After the 30 minute outage, DSL came back up, but with slower line speeds.
Both modems now report approx:
Downstream: 5180 Kbps
Upstream: 704 Kbps

And new speed tests using result in approx:
Down: 4.5 Mbps
Up: 0.60 Mbps

So an approx 30% drop in downstream line rate and speed performance.

This is on the Spotswood exchange in New Plymouth.

Anyone have any idea's?
Have logged an issue with the Xnet help team, still waiting to hear back on their thoughts.

One possibility is that Telecom/Chorus techs are changing cabinets in the exchange for ADSL2+ rollout.
But this exchange is not due until June 2011, according to

Other thoughts?

The only reason I'm raising is this because I work from a home office, and use VPN connections to both USA and London, for work, and drop in speed is slightly noticable when transfering work files around.

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22739 posts

Uber Geek


  # 441167 18-Feb-2011 13:49
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I was not due till april but the cabinet here went live on wednesday and they were already patching up one up the road closer to the exchange, which was also april that it was scheduled for.


391 posts

Ultimate Geek

  # 449464 18-Mar-2011 08:36
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Well this issue is still happpening.

** Note: Can a mod please move this topic to the XNET forum **

The ADSL modem is now connecting even slower.

Line rate is now 4832 Kbps down, 576 Kbps up.

And speedtest via is slower as well:
4.16 Mbps down, 0.43 Mbps up

I have emailed Xnet back and forth multiple times, each time they suggest to try different modems, different plugs, different cables, unplugging everything else.
And nothing changes.

Xnet have also said Telecom have investigated the fault, but can't see anything from their end???
Why the drop in line speed then?

Xnet said they can send a telecom technician out to investigate, but the tech will charge me a $200 call out fee if the issue is found to be on my end.
And frankly I'm not willing to do this, as nothing has changed from my end.

The line speed only dropped after there was a 30 min outgage.

Who else can I talk to?


391 posts

Ultimate Geek

  # 449465 18-Mar-2011 08:39
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Here are my current modem stats:

Line Mode
Line State
Show Time  

Latency Type
Line Up Time

Line Coding
Trellis On 
Line Up Count


Line Rate
4832 Kbps
576 Kbps

Attainable Line Rate
5312 Kbps
736 Kbps

Noise Margin
13.1 dB
12.0 dB

Line Attenuation
23.0 dB
14.0 dB

Output Power
19.7 dBm
11.9 dBm

621 posts

Ultimate Geek

  # 449479 18-Mar-2011 09:15
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Regarding the June 2011 date, on that same page is this statement:

Dates provided are when end-users are expected to benefit from upgrades. This may be up to 90 days after Chorus equipment installation dates.

This means that Chorus could install equipment up to 90 days prior to June 2011. Therefore, it is likely you are in the process of being patched over to a cabinet.

I would wait it out a few days and if it continues get a technician around.

391 posts

Ultimate Geek

  # 472629 22-May-2011 21:19
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This problem seems to be getting slowly worse.

Now line speed is 3552 Kbps downstream, and 512 Kbps up.

Nothing at all has changed with the wiring, modems, cables, at our house, and I work from my home office, with a VPN to Syndey & Bozeman (US) for work.
So can notice the slower speeds.

The downstream speed is now over 50% slower than back in early Feb 2011, when it was around 7500 Kbps.

Have tried contacting Xnet help desk, but they keep fobbing me off saying Telecom have checked their end and no problem.
And I would be charged $200 if Telecom sent a tech around to check our house wiring.

And I know nothing has changed with the wiring.
Even tried different sockets, and the master socket.

What else can I do???

7101 posts

Uber Geek


  # 472789 23-May-2011 09:20
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I think you have already been advised as to what is most likely happening. During cabinet change over its common that speeds take a dive as the street cabling is coupled up to both the exchange and cabinet, once all the cross connects are complete and the new cabinet gear ready then the jumper to the exchange is removed and swapped to the new gear, and your speeds should make a massive increase, in the meantime (often a few days to weeks) the speeds can take a serious dive as a result of the extra cabling.


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