NBN HFC trial achieves 84Mbps/33Mbps average speeds


news The NBN company today revealed it had completed its HFC cable in the Queensland region of Redcliffe and was on track for a June commercial launch of the technology, with users on the trial achieving average downlaod speeds of 84Mbps and average upload speeds of 33Mbps.

In a statement posted on the company’s blog, NBN public affairs manager Tony Brown noted that the company launched the pilot on Optus’ HFC cable network in November. The trial has seen the NBN company both upgrade the SingTel subsidiary’s HFC cable network with additional network hardware, as well as opening it for wholesale access.

The company had three retail ISPs participate in the trial — Telstra, iiNet and Exetel.

“NBN is delighted to announce that our HFC pilot has achieved fantastic results. In a test period between December 1 and January 20, the HFC pilot end-users averaged speeds of 84/33Mbps from their RSPs Layer-3 networks over that period,” Brown wrote.

The NBN company said that independent analyst firm Ovum had “verified” the results of the HFC trial, in a report which is available online (PDF).

“The HFC pilot results are very encouraging as we look to ensure that our HFC end-users are able to access the same speed tiers from their RSPs as our Fibre-to-the-Premise (FTTP) end-users, with wholesale speed offerings up to 100Mbps downstream and 40Mbps upstream,” Brown wrote.

“Indeed, our achievement in offering wholesale upload speeds of 40Mbps is particularly impressive as very few HFC operators around the world offer upload speeds as fast as this. Only ComHem in Sweden and UPC in Switzerland are delivering upload speeds faster than the 40Mbps wholesale speeds we achieved on the HFC Pilot.”

Brown noted that although the NBN company was “delighted” with the speeds it had achieved in the pilot, they were “really only just the beginning” of what the NBN company could achieve on its HFC cable infrastructure.

“On our HFC pilot, we were using the current generation DOCSIS 3.0 technology, but from mid-2017 we plan to deploy next-generation DOCSIS 3.1 technology which is capable of wholesale downstream speeds of 10Gbps and wholesale upload speeds of 1Gbps,” Brown said.

“So whilst the pilot demonstrates that we are able to deliver great wholesale speeds of 100Mbps downstream and 40Mbps*, the great news is that the rapid improvements taking place with DOCSIS technology means that we could be able to generate much higher speeds going forward – speeds that will be right up there with what we can achieve on our FTTP network.”

“In addition, our HFC Pilot demonstrates once more that existing network assets, whether they be HFC or copper networks, are capable of delivering great speeds to end-users with new technological advances promising even greater speeds ahead.”

The results of the trial would appear to blunt some of the recent criticism of the NBN company’s re-use of Optus’ HFC cable network as part of its network rollout.

Internal documents leaked in November appeared to reveal that the NBN company was considering overbuilding the Optus HFC cable network, in a move which appeared to dramatically validate long-standing criticism that the HFC cable technology could not meet Australia’s future broadband needs.

The documents — dated 3 November — openly stated that Optus’ HFC network was “not fully fit for purpose”, with some Optus equipment “arriving at end of life” — needing to be “replaced”. Some Optus HFC nodes were “oversubscribed” compared with Telstra’s HFC cable network and would “require node splits”, while Optus’ cable modem termination systems didn’t have “sufficient capacity to support NBN services”.

The document explicitly stated that some 470,000 premises in the Optus HFC cable footprint would need to be overbuilt, with a significant impact to the NBN company’s peak funding requirement ranging between $150 million and $600 million. The document also explicitly stated that the NBN company will miss its financial year 2017-2018 HFC ready for service target.

The results of the Optus HFC cable upgrade trial would appear to cast doubt upon this internal NBN document.

However, in his blog post, Brown did also include a caveat, warning HFC cable users that the NBN company’s infrastructure may not always deliver the theoretical maximum which they had paid for. This is a phenomenon already witnessed in the Fibre to the Node portion of the NBN rollout.

“As with all our network technologies, NBN delivered wholesale HFC speeds to RSPs, and the speeds experienced by HFC Pilot end-users on those Layer-3 networks can be affected by a range of factors,” wrote Brown.


  1. Anyone else read the pilot report … and interestingly … the amount of users?

    “The pilot is being conducted on the Optus HFC network (Fitzgibbon Exchange) running DOCSIS 3.0 technology and is currently running tests across approximately twenty end users” – Page 4

    Twenty end users. Twenty? Got to keep those averages up right?

    I don’t know how you could be backpatting yourselves over a twenty end user base. A few hundred would be better, a few thousand even more so.

    Yes, you’ve got to start somewhere, but it’s bit premature to be congratulating yourself on statistics this early. Based on those stats, you could say that everyone on ADSL2 gets north of 20 MBit, as long as you select your 20 users carefully.

    P.S. By the way … better HFC than other HFC deployments is still HFC.

    • Renai does not appear to have had time to read the Ovum report which mentions only 20 users were in the end user part of this Optus NBN HFC pilot. Look forwards to his opinion on this.

      As usual the devil is in the detail

      Full credit to NBN for providing the link to the Ovum report.

      • “Renai does not appear to have had time to read the Ovum report which mentions only 20 users were in the end user part of this Optus NBN HFC pilot. ”

        Well, I would imagine he has rather a lot on. ;-)

        Besides, a collective set of eyes such as ours can glean a lot more information than one person as well.

        I find it interesting that NBN provided the link. Maybe that one slipped through to the keeper? Considering the level of control these days on any information with regards to the MTM (particularly specifics such as these which can show how little conclusive bases that the actual MTM release shows) I can’t help but think it’s a bit of an oopsie.

        I guess we’ll never know.

        P.S. *waves at Renai* Got in before me, lol.

      • Yes, interesting report. It shows a drop in speed in the evenings to 78Mb with 20 users. So with the usual 200 to 400 users per split, that could be an evening slowdown to 4 to 8Mb….

  2. I’ll be watching this carefully. I’m in an area which is slated for HFC NBN. Currently I get good download speeds with Telstra, over 115Mbps at times. Dropping that down by 30Mbps isn’t particularly enticing, despite the dramatic improvement in upload speed.
    If this was offered to me tomorrow, then I can’t say I would grab it. Perhaps if there was a nice price drop as well then I would be more tempted.
    So what is all of the NBN money being spent on? I suspect that Telstra might have upgraded to DOCSIS 3.1 sooner or later anyway. It will be nice having more choice of ISPs, but still, I don’t know that it is worth the government money and effort.

  3. oh, so 84/33mbps is meant to be good? Maybe about 10 years ago. We are still a century behind most countries in terms of internet speeds. What a joke.

    • oh, so 84/33mbps is meant to be good?

      Small numbers like this amaze those that are easily impressed. GimpCo employees no exception but since the policy is politically motivated they have to try and convince everyone else too.

      • Well I for one am impressed HC, it’s just like fibre (/sarc)…

        Well, except for being nowhere near as good, on the back HFC cable TV networks the usual suspect, flip-flopper, MTM apostles here referred to as failed networks.

        Then add that to the infamous copper FRAUDBAND and there you have it… MTM…

        Proving to be no quicker nor cheaper in actuality (even without considering FTTP being the recognised end goal).

        Wow how fucking underwhelming.

  4. 20 users? That’s ridiculously few, if you’re trying to demonstrate a technology that relies on shared bandwidth.

    I live in an area with underground power (so no Optus HFC) and on a RIM (so no ADSL for many years). As a result, take-up of Telstra HFC is probably fairly high.

    On a busy evening, or a Saturday afternoon, my speed drops to as little as 5Mbps. Pretty damn good compared to what many Aussies have to put up with, but quite a bit less than the 30 Mbps I pay for.

    Until we see a trial with 80% of households in a service area on HFC, we should ignore the speeds (although on reflection, only getting 84 Mbps when the cable is that lightly loaded is pretty shockingly poor, actually!)

    • Here’s the thing… if your on HFC NBN it will be even worse since the *only* fast broadband option will be HFC ie. 100% of all fast broadband users will be using the network since there’s no other options there!

  5. So in 2019 when they eventually get around to renaming my current cable as NBN…
    They will also slow my download speed from 100Mbps (which I’ve had for several years)
    to 84 Mbps… Worth the wait!

    • Worse, the actual speeds averaged on my Telstra HFC connection is 110-115Mbps and drops to around 80Mbps during peak hours.

      A drop to 84 Mbps with peak download speeds of 5-10Mbps (based on similar FTTN issues) represents a massive backward step in my internet connection. I couldn’t care less about the higher upload speeds at this point in time, so this shows definitively that the “next generation super-fast broadband” that I will be offered by NBN Co will be crippling my download capabilities and saving me no money at all.

      Way to go NBN Co. Way to go Turnbull, you waste of space.

      • 110-115Mbps is what I used to get on bigpond, but these days I’m lucky to get 20Mbps!

        if 84Mb/s down is all the NBN can get on HFC then they aren’t trying (admittedly it was OPTUS HFC, so they are starting with a handicap!)

  6. “However, in his blog post, Brown did also include a caveat, warning HFC cable users that the NBN company’s infrastructure may not always deliver the theoretical maximum which they had paid for. This is a phenomenon already witnessed in the Fibre to the Node portion of the NBN rollout.”

    Actually present on all internet technologies, the internet is a contended network. A basic acceptance of this concept would help inform the discussion (highlight areas of contention). Right, what am I saying;-)

    What’s the CPP of HFC vs FTTH again?

    Trial no surprise to the tech literate few, plenty of HFC operators worldwide. A tech that could be delivering high-speed internet to an additional 4m NBN premises today had Conroy not been such an “expert”.

    • “A tech that could be delivering high-speed internet to an additional 4m NBN premises today had Conroy not been such an “expert”.”

      Best examine the history on that one. Telstra (and certainly Optus) had no plans to do anything with HFC for years beforehand. Indeed, it was difficult to get them to even DISCUSS it, let alone upgrade it. This was prior to the NBN even being a twinkle in Kevin Rudd’s eye, so you can’t blame Labor for that one Richard.

      You’re outta paint … best go get some more.

      • So Conroy didn’t threaten Telstra with future cellular spectrum restrictions if they went ahead with their proposed upgrade of HFC? Didn’t propose a deal (worth billions) to ensure the telcos wouldn’t use HFC to compete with NBNCo?

        Happy to revisit history, revisioning it not as welcome.

        4m more premises would’ve been able to order high-speed internet in the time Conroy/Quigley took to deliver their 154k.

        • “So Conroy didn’t threaten Telstra with future cellular spectrum restrictions if they went ahead with their proposed upgrade of HFC? Didn’t propose a deal (worth billions) to ensure the telcos wouldn’t use HFC to compete with NBNCo?”

          “Happy to revisit history, revisioning it not as welcome.”

          Let’s revisit history then, shall we?

          Conroy’s threats came only after the NBN initiative was started. If it hadn’t have started … nothing was happening. Any fixed line broadband development had stalled to HFC for those deemed lucky enough by Telstra to connect and the HFC footprint was not growing.

          Conroy chose to hit Telstra where it hurt. And deservedly so. After all, don’t you remember Telstra trucks chasing Optus vans down the same streets connecting HFC in order to stifle competition? Yeah, that worked out real well for Australia the first time (not). You’d like to advocate for a second?

          Calling Bunnings … Richard needs more paint.

          • Calling Bunnings … Richard needs more paint.

            All those shades of brown…

          • Murdoch,

            Conroy chose to hit Telstra where it hurt.

            Gifting a corporation $11B a major part of which was to shut down their copper and HFC infrastructure is hitting Telstra where it hurt? – ooh yeah that really hurt, wheelbarrowing it to the bank will do their back in.

          • @Reality, I am assuming he is referring to threatening to block Telstra from the wireless spectrum auction, which WOULD hurt them, considering a very large amount of their profit comes from revenue generated on their mobile network.

          • “Gifting a corporation $11B a major part of which was to shut down their copper and HFC infrastructure is hitting Telstra where it hurt?”

            That you would ask that question means that you aren’t aware of the history at all. Yes, it did hurt them. Because Telstra no longer had any control over the last mile infrastructure across most of Australia, an area which was historically a cash cow for them. It took control of that last mile off Telstra … effectively the party was over.

            The legislation preventing competition means that while Telstra had some bucks in the bank, they couldn’t pull the same trick on NBNCo that they did with Optus in previous years.

            No longer though … Telstra not only has additional rentseeking (errrr sorry … maintenance) opportunities totalling hundreds of millions of dollars (and that’s only the start, there’s another couple of hundred million for “design” as well) but let’s see Malcolm/Fifield sell this off to Telstra once again … putting us right back where we started … with a monopolistic provider that uses it’s last mile dominance to hold Australian telecommunications to ransom for another generation.

          • @R0ninX3ph

            I read his post as saying that too….but then I don’t think reading comprehension is Realitys strong suit.

          • Ronin,

            I was talking a bit above the wireless spectrum specifically, as a broader picture of the government wresting control of the last mile infrastructure (whether wireless or fixed line) back from Telstra since it’s privatisation and subsequent failure at fixed line infrastructure competition.

            The sale (or threat to withhold it) from Telstra would have neutered their ability to upgrade their wireless, which was becoming the new cash cow for them at the time. The old fixed line infrastructure wasn’t doing as well, thanks to ACCC rulings and Telstra’s lack of investment in it (before the NBN was even thought of). It was still profitable, and Telstra weren’t going to give it up without a fight.

            The dual threat of only renting duct space and introducing a ceiling to Telstra’s technology stack (because good luck getting beyond 4G with what spectrum they had) was going to do a lot of damage to Telstra, fortunately they saw this quicker than Richard or Reality did (because they both still don’t get it, even after the fact).

          • @ alain

            Gifting Telstra $11B for NBN to reuse the obsolete networks we finally got rid of so that Australia could enter the new tech millennium (finally) which in turn need $100’s of M’s if not $B’s per year on top of the $11B to maintain (although you refuse to even recognise this…ROFL), then needing costly upgrades and replacement of unusable copper/HFC and then pay Telstra to perform the actual maintenance…

            Ooh they must be cowering in fear.

            Oh no I meant laughing at this ineptness /mismanagement of latest gov and NBN circus.

            You’re welcome.

        • “So Conroy didn’t threaten Telstra with future cellular spectrum restrictions if they went ahead with their proposed upgrade of HFC? Didn’t propose a deal (worth billions) to ensure the telcos wouldn’t use HFC to compete with NBNCo?

          Happy to revisit history, revisioning it not as welcome.”

          Indeed. [Citation Needed]

    • “Trial no surprise to the tech literate few, plenty of HFC operators worldwide. A tech that could be delivering high-speed internet to an additional 4m NBN premises today had Conroy not been such an “expert”.”

      I do agree in principle, the NBN could have been propelled forward had they gone the option of trying to use HFC in the HFC footprint and then rolled out FTTH elsewhere, as Simon Hackett proposed years ago, as Scenario 4 in the SR proposed, and which has been subsequently ignored and thrown away because it is inconvenient to discuss.

    • And yet Richard with all the $b’s that you claimed waiting to be invested before the NBN. As you claim the current can’t even deliver a 25Mbps in it current condition.

    • “What’s the CPP of HFC vs FTTH again?”
      According to your figures, the CPP of HFC is ~$4000 higher than just going to FTTP directly.

    • The minimum is 0/0

      There in no way to know the real world speed until we have the service fully subscribed.

  7. 20 end users.
    I am in an area slated for HFC NBN construction in H2 of 2016. I am in the Optus HFC footprint, there are apparently 1600 premises who will be included in this footprint.
    Without fail, every night at 5pm until after midnight we get slowdowns from 100Mbps to 1-4Mbps.
    How does a test with 20 end users give any data on prime time congestion? How does it do anything aside from fluff up the completely insane notion that a shared HFC network is just as good as FTTP?

    • Optus under-provisioning and oversubscribing the HFC nodes is likely your issue, not generally the hardware itself.

      • Which isn’t going to change under nbn in any positive way (indeed, it will likely see many more people be dumped on the service), without significant expensive upgrades.

  8. That will still go down when it rains and will still get congested. If you are at the end of that cable the real world would be half of that. IT’s also up to. Why not 100/40 + ? Iinet HFC can supply 200/40 right now and they are trying to overbuild with FTTN and scrap it.

  9. HFC is unstable and unpredictable. There is no telling when it will go down and for days. Ive gone whole weeks offline on Telstra. Incredibly bad for productivity. It went down only a few weeks ago because of heavy rain and was offline for 3 days. Telstra refused to notify people and you had to waste the whole time monitoring the network calling them back each time trying to get it back up. I couldn’t do any work at all.

    • Bigpond Cable has always been pretty solid for me, the only time in the last two years I’ve really had any downtime was when the TAP in the pit was corroded. Tech came out the following day and replaced it and it’s been great since.

      But then, I live on a hill and wouldn’t get your issue with water.

  10. Whenever I hear Morrow, Fifield or anyone else talking about upgrading the Optus and Telstra HFC networks, I feel like these people think they’re buying these networks off the shelf of some store, untouched in mint condition with the shrink wrapping still on. They can’t just switch off whole sections of the network for upgrade, there’s hundreds of thousands of users who still need to have access while they tinker with it.

    And even after the upgrade the network still has to support hundreds of thousands of old DOCSIS 3.0 modems (not to mention the existing Foxtel channels on the Telstra network). So even if they do upgrade to DOCSIS 3.1, the network won’t be operating at anywhere near this 10Gbps figure they keep throwing around.

    It’s all spin, designed to make everyone think they know what they’re doing.

    • The DOCSIS3.1 upgrade has more to do with coping with the huge increase in HFC customers per node segment than a customer experience upgrade per se. Current HFC BB loadings are in the order of ~20%, and in many areas it’s congested. nbn want to move that to 86%…and expect somehow that congestion won’t be an issue…well it won’t be if they split the runs…but think of the cost..oops not allowed to think of the cost, we’ll upset Reality and Richard. MTM good Labor NBN bad…

      • No no no, they bought the networks so the upgrades are free, right? Like when they bought their mac, all the mac OS upgrades come free now?

        Seriously though, they’ve done all the hard work negotiating to buy the networks, now they’ve done a trial with a few users which was super easy and gave them the result they were looking for, so obviously they’re finally up to the easy part of simply upgrading the networks and rolling it out to millions more users. What could possibly go wrong?

        Like I said, they wouldn’t have a clue, they’re just faking it in the hope that the NBN will magically build itself with no problems or setbacks. They’re betting they can hide behind redactions and commercial-in-confidence to cover up all their mistakes, because they’re going to pour billions into dead-end technologies that will not only fail to deliver on their promises, but will need to be replaced with fibre as soon as it’s finished.

  11. Queue all the critics ’84 down 33 up is shit!!!!!!!!!!’.

    Meanwhile it’s basically the same thing you get on fibre.

    Technology agnostic people will look at this as a fantastic result.

    • Absolute B.S!

      You can get 10gbs on fibre (and it will only get faster).

      HFC/FTTN are old technology – if it was 2005 and the networks had been maintained then they might make sense.

      As it is, it’s 2016 and they have not been maintained.

    • It’s great…for 20 users. Hardly worthy of a news article.

      Maybe you also missed that the 100mb down can be updated to 1gb down (ie future proof) with some small equipment upgrades.

      But also, don’t let the increase of the $43b all fibre network to $56b copper mish-mash that needs further upgrading get in the way of your technology agnosticism.

    • Its better than ADSL for sure. Polished poop is still polished poop even if its gilded in gold. Issue is we’re paying for it like its solid gold as well with gold prices on the increase etc.

    • “Technology agnostic people will look at this as a fantastic result”

      I feel as if you don’t quite understand what that term is meant to mean outside of the misappropriation of the term used by our current PM

      Kinda like how the Report a while back said that our MTM is “future proof” because all you need to do is “upragde” the system should the need arise!

    • “Queue all the critics ’84 down 33 up is shit!!!!!!!!!!’.”
      It’s adequate for 20 people. But in the real world it will serve 200-400 people. All of a sudden primetime will see people limited to 8/4 max. Regardless of ISP. Unless you’re with Optus, this simply doesn’t happen on FTTP.

  12. Hysteria aside, I’d be interested in knowing what the engineers were expecting and hoping for. Depending on how they’ve configured it, it’s not surprising the down speed is a little low given the much larger up speed. There are just to many other factors. The interesting points are these are average numbers. It would be interesting to see the distribution curve, plus it was done in parallel with existing customer devices.

    The tidbit I find interesting was the reference that some Optus nodes were oversubscribed and would need a node split. I assume they mean segmenting the cable. I had always assumed this would be required with the NBN due to the huge number of new users on the cable, and also the requirement for higher bandwidth.

    As for the hysteria in the comment thread, this is one field test of a reconfigured network that isn’t even using the technology they will deliver with. (i.e. 3.0 vs 3.1). This isn’t going to be the end product, so we shouldn’t be bagging them for these numbers – unless someone here has some special engineering insight regarding the config. I’m actually a little surprised the PR people weren’t clever enough to add some more context around those numbers or let engineering write the blog post, but I guess they write everything for the regular Joe citizen. NBN PR should be separately engaging with the technical community to provide more detailed information so the press gets a proper analysis.

    • problem is their PR team is patting them on the backs for such an awesome result … of 20 out of 4m (Rich?) users.

      20 is a pretty bad sample size. Most surveys require a 1-2k to be considered anywhere near representative!

  13. What crappy results.
    We spend a lot of coin per month for mundane and inferior internet access.
    What a crock.

  14. so only 20 users………… not a real test or trial.

    trial should have had at least 100 connections but ideally 200.

    To see just how much bandwidth is in the cable.

    Maybe if they posted the amount of bandwidth available at the site, bandwidth per cable and the RSP bandwidth to that box we would know what to expect in the real world.

    • “Maybe if they posted the amount of bandwidth available at the site, bandwidth per cable and the RSP bandwidth to that box we would know what to expect in the real world.”

      Why would they do that when the entire press-release is only intended to muddy the waters for people who don’t understand technology? So the LNP can use it as an excuse at the election.

  15. I don’t undertstand why these tests are even news worthy. I’m a HFC user and can easily get between 70-90mbps of bandwidth when my neighbours aren’t home and using the net. My upload has been as high as 8mbps as well which is nice.

    Last Result:
    Download Speed: 70808 kbps (8851 KB/sec transfer rate)
    Upload Speed: 1814 kbps (226.8 KB/sec transfer rate)
    Latency: 9 ms
    Jitter: 2 ms
    2/24/2016, 10:50:26 AM

    The NBN has run a small test program to determine what exactly? That HFC works? To determine the appropriate contention levels?

    To tell us that HFC can get about 80% of the advertised throughput? What exactly is the point apart from another almost mindless release from the NBN colouring department.

    • As others have noted, maintaining a reasonable download rate while significantly bumping the upload rate is somewhat of an achievement.

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