Thứ Sáu, 7 tháng 10, 2016

NBN FttN slow speeds part 1

  • -tboy-

    heystoopid writes...

    Thus initially when signing up up for any FTTN plans pick a tier speed of 25 Mbps initially, to test the waters.

    Yeah exactly what I've done.

    The rest of your post is just yawn worthy parroting of stuff everyone already knows. Seriously, can we just stick to resolving the OPs concerns .... sigh.

  • The Ziggster
    this post was edited

    heystoopid writes...

    This is a graph from NBN Myths, originally published by Ofcom (UK Telco regulator).

    At 600 meters from the node box, the actual VDSL speed is around 20 Mbps. This matches the data supplied in the original post of June 24th, 2016.

    Which is indeed a MYTH.. as the UK VDSL specs are not the same as NBN (G.INP for a start) and Australian FTTN NBN users have been able to get 100/40 up to about 500-600m before it does indeed drop off (quite rapidly)

  • lucreth
    O.P.
    this post was edited

    The split to the unused sockets is gone.
    (http://tinypic.com/r/292blet/9)

    My speeds have improved a bit, but still not reaching the minimum 25 Mbps.

    sync speed (3:18pm 25/6/2016) (http://tinypic.com/r/svp5c3/9)
    Speedtest speed (3:23pm 25/6/2016) (http://www.speedtest.net/my-result/5429898474)

    Thinking of getting a sparky to replace the white telephone cabling to a shielded CAT6 cable direct to a RJ12 socket near my modem. Would it improve my speeds anymore?

    Another thing I curious about is why my uploads stream has more attenuation then my download stream. I though uploads use lower frequency signals that should attenuate less [over] distance?

  • -tboy-

    lucreth writes...

    My speeds have improved a bit, but still not reaching the minimum 25 Mbps.

    Yeah but its 21/9 which is total 30 of bandwidth .... it would be interesting to know if on a 25/5 plan it was able to reach 25/5. I just don't know enough about how the VDSL2 modes are used on the different plans, if the bias is pushed more on the upload on the higher plans etc.

    Did you just snip the extra branch cables off though after the joints, or remove the joints entirely?

  • little steve

    -tboy- writes...

    if the bias is pushed more on the upload on the higher plans etc.

    They use the same band plan on all devices. The frequency carvings are not dynamic.

  • lucreth
    O.P.
    this post was edited

    Will most likely downgrade to a 25/5 Mbps plan if the NBN are not willing to fix the line on their side.

  • -tboy-

    little steve writes...

    The frequency carvings are not dynamic.

    So if he went on a 25/5 plan, his sync wouldn't possibly go from 21/9 to 25/5 ?

    Im just thinking of the ADSL2+ AnnexM situation, where if you enable it you gain 1 megabit of uplink (from 1 to 2) and trade a couple of megabit off the download... But then again, that's a different "band plan" I suppose.

    edit: I see there that the max attainable is still only 23megabit down, so i guess he still wouldnt get 25 no matter what..

  • little steve

    -tboy- writes...

    So if he went on a 25/5 plan, his sync wouldn't possibly go from 21/9 to 25/5 ?

    No.

    Im just thinking of the ADSL2+ AnnexM situation, where if you enable it you gain 1 megabit of uplink (from 1 to 2) and trade a couple of megabit off the download

    Annex M is an entirely different mode of ADSL2.

    But then again, that's a different "band plan" I suppose.

    Yep.

    http://www.joepeesoft.com/Public/DSL_Corner/DSL_Spectra_VDSL2.html#BandPlanEUR_998 We use B8-11 network wide, but there aren't really any other options to move more upstream into downstream bins as B8-11 is the most asymmetric of the Annex-B band plans on profile 17a. The other options head the other direction with more upstream frequency bins

  • 2016-Jun-25, 3:35 pm
    lucreth
    O.P.

    This is the Telstra pit, just in front of my house.
    (http://tinypic.com/r/soqobb/9)
    (http://tinypic.com/r/9gblm8/9)

    From the pictures, dose anyone see any possible things affecting my line?

    Speed has improved a bit again but still not hitting 25 Mbps yet.

    Sync Speed 3:18pm 26/6/2016 (http://tinypic.com/r/2hnvq8j/9)
    Speedtest 3:24pm 26/6/2016 (http://www.speedtest.net/my-result/5431981034)

  • 2016-Jun-25, 3:35 pm
    Gamer82

    lucreth writes...

    (http://tinypic.com/r/9gblm8/9)

    From the pictures, dose anyone see any possible things affecting my line?

    Its quite possible that moisture has gotten inside that cable joint enclosure ?

  • -tboy-

    Gamer82 writes...

    that cable joint enclosure ?

    looks like a drink bottle lol

  • Geo101

    lucreth writes...

    From the pictures, dose anyone see any possible things affecting my line?

    Gamer82 writes...

    Its quite possible that moisture has gotten inside that cable joint enclosure ?

    You cannot diagnose a line fault by looking at the outside of a randomly picked out sealed joint!!

    You do realise that there will be one of these joints in just about every pit between you and your distribution pillar?

    Put the lid back on, and leave it to the people who know what they are doing...

  • Public Identity 1

    Not sure if it's viable, but have you asked what your neighbors are on and who they're with as if they're getting a better speed, you can take this back to the RSP with creditable data or become aware that everyone in the area has the same issue.

  • lucreth
    O.P.

    After been sent a replacement modem, changing my internal wiring to CAT6, my speeds only imporved a little.

    Decide then to ask my RSP to lodge a line fault with NBN, which they kindly did. Few days later NBN sent a Telstra technician who discorved with line was an open circuit. He reconnected me on a spare pair and my speeds are now syncing at 51/23 Mbps.

    Before : http://imgur.com/KN5s47n

    After : http://imgur.com/AXh6KJN
    http://www.speedtest.net/my-result/5492156992

    Never reliased my line was open circuit all these years, due using naked ADSL. Also explains why my modem upstream line attenuation was higher than my downstream. The higher frequencies DSL signals were better at wirelessly jumping accross the cable break then the lower frequencies.

    Hope this may help others who have similar issues. Would like to thank fellow posters, Barefoot telecom support staff and the technician for their help.

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