davewantsmoore Posted November 15, 2018 Share Posted November 15, 2018 Nice, it got solved. Sometimes these mysteries can go on a while. 1 hour ago, MrC said: Then we checked the cable from the Madison to the my smart-wiring hub Oh - I didn't notice this "smart hub" before. Who wired it in? I would have mentioned before that Telstra (now NBN) own all the way up to the first socket inside your house.... but when you have a termination box ("madison") on the outside, this becomes your new "boundary". You own everything after the box. 2 hours ago, MrC said: Luckily he found that they left a 'spare' wire from the Madison, so in changing over to that, it increased the speed from 38-39 up to 45 Mbps. So in summary it appears that for some reason, the Cat6 cable in my roof had decided to play up and interfere with the speed/stability of my connection. Hold on.... did he remove one of the cables (so there is only one). When NBN detected the bridge-tap (they can hear the reflections) .... what they are saying is they can hear "the two wires". The DSL signal goes down both of them, and then reflects back towards the node due to the big impedance mis-match. Especially if one of the wires was un-terminated (ie. just running nowhere) this is especially bad. If the person who wired this in knew you were using ADSL ... and especially if they knew the line was ONLY used for DSL .... then they should not have done this. 2 hours ago, MrC said: A technician sent by iiNET The technician would have been representing NBNCo? (Yes?!) .... iiNet just requested it, because they are NBNCo's customer. Link to comment Share on other sites More sharing options...
davewantsmoore Posted November 15, 2018 Share Posted November 15, 2018 (edited) Echo... echo... echo (heh) Edited November 15, 2018 by davewantsmoore duplicate post Link to comment Share on other sites More sharing options...
MrC Posted November 15, 2018 Author Share Posted November 15, 2018 3 minutes ago, davewantsmoore said: Oh - I didn't notice this "smart hub" before. Who wired it in? Hold on.... did he remove one of the cables (so there is only one). When NBN detected the bridge-tap (they can hear the reflections) .... what they are saying is they can hear "the two wires". The DSL signal goes down both of them, and then reflects back towards the node due to the big impedance mis-match. Especially if one of the wires was un-terminated (ie. just running nowhere) this is especially bad. If the person who wired this in knew you were using ADSL ... and especially if they knew the line was ONLY used for DSL .... then they should not have done this. The technician would have been representing NBNCo? (Yes?!) .... iiNet just requested it, because they are NBNCo's customer. He terminated one of the cables. Smart hub was installed during installation by TruAudio, a specialist in home smart wiring. The technician indicated if the smart hub was installed now (for the NBN) then it would have been done differently. But back in 2011 the NBN was a long way off. Link to comment Share on other sites More sharing options...
MrC Posted November 15, 2018 Author Share Posted November 15, 2018 Technician actually was from TPG who now owns iiNET. Link to comment Share on other sites More sharing options...
davewantsmoore Posted November 15, 2018 Share Posted November 15, 2018 14 minutes ago, MrC said: He terminated one of the cables. Smart hub was installed during installation by TruAudio, a specialist in home smart wiring. The technician indicated if the smart hub was installed now (for the NBN) then it would have been done differently. But back in 2011 the NBN was a long way off. DSL was in use in 2011, and DSL is in use now for the NBN. This sort of wiring is a problem for DSL .... it's just that the (V)DSL used for NBN is more prone to drop-outs ..... where as for the (A)DSL used before, probably just going to kill the speed. They should have known not to leave wiring like this in 2011 (especially when it served no purpose - if it went to another phone socket, then fine) Link to comment Share on other sites More sharing options...
TerryO Posted November 17, 2018 Share Posted November 17, 2018 (edited) On 9 November 2018 at 8:19 PM, davewantsmoore said: This is different situation. Drop-outs and changing sync speed on a DSL service (as opposed to a change in download speed) .... are a hardware thing. The only thing changing ISPs will do is get better/worse customer service (ie. they'll be better or worse at knowing what to tell the customer, and what to say to, or expect from NBNCo). Several years ago around Newcastle one of the smaller ISP's (sorry can't remember which one) went on a major advertising program bragging about their superior download speeds to get more customers and they succeeded and many people switched over. Then shortly after the reported problems started with download speeds dropping drastically as more and more people switched to them, but the problems were only with this ISP. After several months of excuses and broken promises from the ISP and much public customer anger they admitted that their (for the want of a better explanation on my behalf) bandwidth that they had purchased from NBN had been exceeded by all the extra customers and thus the drop off in speed. So it would seem given what happened in Newcastle, that changing ISP's can make a big difference in speed for customers in a given area and that difference is not just customer service. cheers Terry Edited November 17, 2018 by TerryO 1 Link to comment Share on other sites More sharing options...
davewantsmoore Posted November 18, 2018 Share Posted November 18, 2018 2 hours ago, TerryO said: So it would seem given what happened in Newcastle, that changing ISP's can make a big difference in speed It CAN make a big difference .... but not in THIS situation. This situation was caused by the network between the customer equipment and the "node". This is owned and controlled by the customer and by NBN. The ISP has no ability to influence it. It is becoming quite common that "NBN problems" are being incorrectly blamed for ISP related problems ..... and ISP related problems are being blamed for NBN (or much! more likely, on customer) problems. "Change ISPs" is not smart advice, until you work out what the actual problem is. 1 Link to comment Share on other sites More sharing options...
ThirdDrawerDown Posted December 25, 2018 Share Posted December 25, 2018 On 09/11/2018 at 1:14 PM, MrC said: must say that I was mightily impressed and have been monitoring my download and upload speeds since March every couple of days. Do you have a preferred monitoring tool? Link to comment Share on other sites More sharing options...
MrC Posted December 27, 2018 Author Share Posted December 27, 2018 On 25/12/2018 at 6:30 PM, ThirdDrawerDown said: Do you have a preferred monitoring tool? SpeedTest by Ookla. 1 Link to comment Share on other sites More sharing options...
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