Speed halving each night at the same time.

Forums › Spark New Zealand (including Skinny and BigPipe) › Speed halving each night at the same time.

oceanlyner

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#151335 21-Aug-2014 18:49

I have just switched to Spark in the last few days on the unlimited ADSL plan. I am using the bundled Huawei router.

The last 3 nights between 5.30pm and 6pm the ADSL connection has dropped and then reconnected at half the download speed. (I have been doing frequent speed tests as we are getting poor speed before it halves!)

I understand that it is peak time and it may slow down, but this seems to happen like clockwork. Spark have told me that it is the traffic management causing the speed issues, but I read a lot of stuff on here saying they aren't managing the unlimited plans yet?

I have tried isolation tests and moving jacks etc, but nothing has helped. Any one have any ideas?

Edit: House is less than 10 years old, wiring should be good. Neighbours either side of us getting good speeds with no issues.

Current router details at half speed:
Line standard ADSL2+
Channel type Interleaved
Downstream line rate (kbit/s) 4003
Upstream line rate (kbit/s) 1049
Downstream SNR (dB) 11.8
Upstream SNR (dB) 12.5
Downstream line attenuation (dB) 26
Upstream line attenuation (dB) 11.5
Downstream output power (dBmV) 0
Upstream output power (dBmV) 12.6
Downstream CRC 0
Upstream CRC 0
Downstream FEC 0
Upstream FEC 0

1 | 2 | 3

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#1113052 21-Aug-2014 18:49

Hello... Our robot found some keywords in your post, so here is an automated reply with some important things to note regarding broadband speeds.

If you are posting regarding DSL speeds please check that

- you have reset your modem and router

- your PC (or other PCs in your LAN) is not downloading large files when you are testing

- you are not being throttled by your ISP due to going over the monthly cap

- your tests are always done on an ethernet connection to the router - do not use wireless for testing

- you read this topic and follow the instructions there.

Make sure you provide information for other users to help you. If you have not already done it, please EDIT your post and add this now:

- Your ISP and plan

- Type of connection (ADSL, ADSL2, VDSL)

- Your modem DSL stats (do not worry about posting Speedtest, we need sync rate, attenuation and noise margin)

- Your general location (or street)

- If you are rural or urban

- If you know your connection is to an exchange, cabinet or conklin

- If your connection is to a ULL or wholesale service

- If you have done an isolation test as per the link above

Most of the problems with speed are likely to be related to internal wiring issues. Read this discussion to find out more about this. Your ISP is not intentionally slowing you down today (unless you are on a managed plan). Also if this is the school holidays it's likely you will notice slower than usual speed due to more users online.

A master splitter is required for VDSL2 and in most cases will improve speeds on DSL connections. Regular disconnections can be a monitored alarm or a set top box trying to connect. If there's an alarm connected to your line even if you don't have an alarm contract it may still try to connect so it's worth checking.

I recommend you read these two blog posts:

- Is your premises phone wiring impacting your broadband performance? (very technical)

- Are you receiving a substandard ULL ADSL2+ connection from your ISP?

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RunningMan

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#1113101 21-Aug-2014 19:34

At 26dB attenuation, you should be getting at least double the downstream sync rate you are getting. This is almost certainly a physical wiring issue. Do you have access to another modem to rule that out?

coffeebaron

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#1113106 21-Aug-2014 19:37

Why do you say house wiring should be good?

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RunningMan

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#1113107 21-Aug-2014 19:39

coffeebaron: Why do you say house wiring should be good?

At 10 years old, I'd put money on it not being that good at all. Master filter would sort it of course!

hio77

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#1113109 21-Aug-2014 19:39

Considering yours is bad, house's iver side are good..

Ild say infact, your house wiring is not good, and could do with a Master Filter.

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oceanlyner

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#1113115 21-Aug-2014 19:42

I just assumed that being a relatively new house the wiring should be new... Therefore fine.. Obviously this was wrong.

We had wireless internet before hand and that was working fine a 10mbs down and 10mbs up.

I asked the Chorus tech about a master filter when it was being installed, he reckoned we didn't need one.

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RunningMan

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#1113117 21-Aug-2014 19:46

oceanlyner:

I asked the Chorus tech about a master filter when it was being installed, he reckoned we didn't need one.

Aaaaahh!

Joking aside, it will ensure the best possible connection for an xDSL modem, well worth doing in most cases.

The issue (even with 10 year old wiring) is it wasn't designed for xDSL frequencies - voice only - so the higher frequencies of xDSL suffers. Also, at 10 years old, there's every chance of a corroded connection if some moisture has got in that will cause the issues you are having.

hio77

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#1113126 21-Aug-2014 19:59

oceanlyner:
I asked the Chorus tech about a master filter when it was being installed, he reckoned we didn't need one.

hmm, extra work, or leave the connection as "working fine"...

not to mention likely he wasnt sent out to do one..

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oceanlyner

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#1113127 21-Aug-2014 20:00

This is what I get with my FritzBox

Not sure why it has been cropped. Link: https://imgur.com/kS7SX9X

RunningMan

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#1113129 21-Aug-2014 20:03

That's pretty similar to the Huawei, so rules out the modem as the issue.

Almost certainly a wiring issue then. Do you know where the line comes in to the building (demarc)?

oceanlyner

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#1113130 21-Aug-2014 20:04

Yeah, it comes into the garage I believe. It is split to all the other jacks in the house via a crude patch panel.

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hio77

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#1113131 21-Aug-2014 20:05

Since you have a fritz, how about a screenshot of the spectrum tab.

Geekzone has a Max-Width css tag imposed on images now, that frustratingly trims pictures.

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