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23 posts


# 140757 19-Feb-2014 13:17
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I am basically wanting to know what I should do (if anything to get a better sync speed on VDSL (Fritz 7390)) but first I will give you the story:

When I first signed up for VDSL (no POTS only VOIP) it wasn't forced (from Snap's end) to have wiring installed correctly in the house.  So I signed up and everything was great was getting sync speeds of 40000 kbit/s-42000 kbit/s down & 10000 kbit/s up.  
Upon further reading of these forums  I realised that since I didn't have wiring installed for VDSL I should at the very least disconnect all the other jack points from the demarc, which I did.  
Once I disconnected all the jack points my sync speed went up to 51000 kbit/s down & I was still on profile 8b so basically maxing out this profile which I thought was awesome.  I was then just checking my fritz every now & then to see if I would maybe get a 17a profile (as the cabinet is literally 200m down the road) but wasn't worried about it, as noted on these forums my line attenuation was probably too high (sat at around 7 or 8).  

Anyway two weeks ago my internet started bouncing so logged a job with Snap who had Chorus test the line.  Which they found to be faulty.  However the first tech from Chorus was determined that it was my wiring considering I didn't get it done in the first place.  So he played with the wiring in my house but this didn't change a thing.  To cut a long story short (after port resets and changing cards & ports at the exchange) a second Chorus tech found the line to be faulting just before it entered the house.  
He has since repaired this and cabled the house correctly - So there is now a splitter at the demarc & then CAT6 going directly to the Fritz box.  No other wiring in any other form is connected.  After a couple of days my sync is now at 44000 kbit/s-46000 kbit/s down & 10000 kbit/s up.  
My Line attenuation is down to either 5 or 6 & I have had much fewer errors which is great.  

I have upgrade to OS6 on the fritz box & had no issues.  I have also downgraded to 84.05.22 & sync speed is no different so since I had no issues I have gone back to OS6.

However back to my original question what do I need to do to (if anything or is it just time) get myself back to syncing above 50000 kbit/sm & hopefully onto a 17a profile considering I am very close to the exchange & cabling is now all correct?  Both Chorus techs said I should be at the very least syncing at 50000 kbit/s.

Appreciate the response.

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Lifetime subscriber

  # 990419 19-Feb-2014 13:17
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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.

23 posts


  # 990639 19-Feb-2014 17:28
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  # 990674 19-Feb-2014 18:27
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Your speeds are still a little low because you've been pushed back to a slower profile. 8ms latency + INP 2 is DLM-6, and it's common for a connection to start here when the training period has been reset. Give the connection a few more days to settle down and see how things look. You should have no problem getting back to DLM-1 ("fast" or 1ms latency, INP 0).

Getting onto 17a is definitely possible for you. It might happen soon, or it might take months. Nobody here fully understands how or when DLM makes that decision, and we've seen things happen that the known documentation indicates shouldn't happen.

'That VDSL Cat'
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  # 990679 19-Feb-2014 18:40
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drop back to 5.22, 6.0 wont be the best for you line. 5.51+ firmwares do read higher attenuation figures.

possibly request DLM to be reset too.

looking at your line, you do have good runnings for possibly getting 17a.

lastly do note, reboots where DLM doesnt consider it to be a generic disconnection rather than a fault, will cause it to be "unstable" and move backwards in profiles.

#include <std_disclaimer>


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

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  # 990869 20-Feb-2014 07:23
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There could also be crosstalk issues impacting speeds. In many areas people are beginning to see VDSL2 sync speeds drop as a result.

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  # 993426 24-Feb-2014 16:18
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I'd suggest dropping back to 5.22 as well. The newer versions seem to lower sync on very clean lines like yours. Other than working on getting DLM-1 back, sounds like you've done pretty much everything easily possible on your end to help. Requesting a DLM reset will get you back to 1 faster than waiting, if you're after the initial 10 day period.

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  # 1011475 23-Mar-2014 19:52
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Well got DLM reset on Friday and boom come home late today and I am on a 17a profile brillant.


'That VDSL Cat'
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  # 1011478 23-Mar-2014 19:56
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Omyck: Well got DLM reset on Friday and boom come home late today and I am on a 17a profile brillant.


looks like your lines well within spec to drop down off that DLM-2 profile at some point too..

#include <std_disclaimer>


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

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