[Snap] The speed of SNAP ADSL2

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › [Snap] The speed of SNAP ADSL2

xiha13

6 posts

Wannabe Geek

#119354 29-May-2013 11:49

I transfer form VODAFONE to SNAP but I getting worse speed.
Any body have an idea how this happen?

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#827654 29-May-2013 11:49

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?

I am the Geekzone Robot and I am here to help. I am from the Internet. I do not interact. Do not expect other replies from me.

surfisup1000

5288 posts

Uber Geek

#827666 29-May-2013 11:58

Once you supply the information requested by peterreader someone could help.

RalphFromSnap

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Snap Internet

#827667 29-May-2013 12:02

xiha13: I transfer form VODAFONE to SNAP but I getting worse speed.
Any body have an idea how this happen?

Hi Ronald,

We have a Chorus technician booked for tomorrow to come and check your line - sorry about the speed decrease but we will have more information for you when we get the report back.

A line test does show errors, including cabling knocks and unbalanced pairs, so there is more than likely a cabling issue somewhere which they will be able to fix.

Thanks,
TheRalph.

Snap

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SCM

459 posts

Ultimate Geek

#827722 29-May-2013 13:54

Transferred from the 'Red Network' to Chorus network?

kieran21

35 posts

Geek

#827741 29-May-2013 14:27

You could try the speedtest again at 3.52am. Could just be the time of day?

xiha13

6 posts

Wannabe Geek

#827772 29-May-2013 14:57

SCM: Transferred from the 'Red Network' to Chorus network?

Yes,because Vodafone got less data and I need to pay more for data.

xiha13

6 posts

Wannabe Geek

#827773 29-May-2013 14:58

RalphFromSnap:
xiha13: I transfer form VODAFONE to SNAP but I getting worse speed.
Any body have an idea how this happen?

Hi Ronald,

We have a Chorus technician booked for tomorrow to come and check your line - sorry about the speed decrease but we will have more information for you when we get the report back.

A line test does show errors, including cabling knocks and unbalanced pairs, so there is more than likely a cabling issue somewhere which they will be able to fix.

Thanks,
TheRalph.

Ok.Thanks.

Quic Broadband

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lucky015

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#827798 29-May-2013 15:48

Did you also have interleaving disabled?

Ragnor

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#827807 29-May-2013 16:06

xiha13:
SCM: Transferred from the 'Red Network' to Chorus network?

Yes,because Vodafone got less data and I need to pay more for data.

Vodafone use 6dB noise margin on their own equipment in the exchange (red network).

Chorus use 12dB noise margin on their equipment.

Noise margin is a buffer, an amount of the "dsl" frequency range that is not used to provide stability. The higher the noise margin the lower line rate.

Higher noise margin trades off line rate for higher stability, less change of disconnects, errors etc.

Each 3dB of noise margin can typically make between 400Kbit and 1200Kbit of difference in the line rate. So 2Mbit difference between 6dB and 12dB noise margin is expected/normal I'm afraid.

Chorus need to rethink their 12dB policy given cabinetisation and shorter line lengths, hopefully Snap and the other ISP's can pressure Chorus to offer a 6dB option.

Fixing other line issues that are increasing attenuation may give you a boost in line rate (home wiring, master filter) or Chorus working the external line, but that would have also given you a boost on Vodafone.

sbiddle

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#827873 29-May-2013 16:58

kieran21: You could try the speedtest again at 3.52am. Could just be the time of day?

Using speedtest.net is pretty much totally meaningless unless you're also referencing xDSL sync speeds with it.

JamesL

956 posts

Ultimate Geek
Inactive user

#827892 29-May-2013 17:25

kieran21: You could try the speedtest again at 3.52am. Could just be the time of day?

The times are GMT so you need to add 12 hours to get NZST

xiha13

6 posts

Wannabe Geek

#828036 29-May-2013 22:03

Ragnor:
xiha13:
SCM: Transferred from the 'Red Network' to Chorus network?

Yes,because Vodafone got less data and I need to pay more for data.

Vodafone use 6dB noise margin on their own equipment in the exchange (red network).

Chorus use 12dB noise margin on their equipment.

Noise margin is a buffer, an amount of the "dsl" frequency range that is not used to provide stability. The higher the noise margin the lower line rate.

Higher noise margin trades off line rate for higher stability, less change of disconnects, errors etc.

Each 3dB of noise margin can typically make between 400Kbit and 1200Kbit of difference in the line rate. So 2Mbit difference between 6dB and 12dB noise margin is expected/normal I'm afraid.

Chorus need to rethink their 12dB policy given cabinetisation and shorter line lengths, hopefully Snap and the other ISP's can pressure Chorus to offer a 6dB option.

Fixing other line issues that are increasing attenuation may give you a boost in line rate (home wiring, master filter) or Chorus working the external line, but that would have also given you a boost on Vodafone.

Thanks for telling me that. But about the speed I hear from a Chorus staff who came before told me my street's exchange still is the old white one. That might cause the speed problem.
But I lose my phone too. the phone line just disconnect for 72 hours already.

xiha13

6 posts

Wannabe Geek

#828037 29-May-2013 22:05

lucky015: Did you also have interleaving disabled?

Sorry what is that?

lucky015

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#828085 30-May-2013 01:23

xiha13:
lucky015: Did you also have interleaving disabled?

Sorry what is that?

I'll take that as a no.

Its a component of DSL that can be turned off, The main reason it is turned off is to achieve a lower ping which may match with your Snap speedtest, One of the side effects of turning it off is that it generally lowers your sync rate.

xiha13

6 posts

Wannabe Geek

#828176 30-May-2013 10:24

lucky015:
xiha13:
lucky015: Did you also have interleaving disabled?

Sorry what is that?

I'll take that as a no.

Its a component of DSL that can be turned off, The main reason it is turned off is to achieve a lower ping which may match with your Snap speedtest, One of the side effects of turning it off is that it generally lowers your sync rate.

Thanks. Is it in the DSL setting? Im still using the VODAFONE's ADSL2 Moden.

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