{"id":3733,"date":"2013-07-22T01:42:33","date_gmt":"2013-07-22T00:42:33","guid":{"rendered":"http:\/\/www.ispreview.co.uk\/?p=3733"},"modified":"2014-07-31T08:52:10","modified_gmt":"2014-07-31T07:52:10","slug":"a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech","status":"publish","type":"post","link":"https:\/\/www.ispreview.co.uk\/index.php\/2013\/07\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html","title":{"rendered":"A Look at the Future Fibre to the Distribution Point FTTdp Broadband Tech"},"content":{"rendered":"

Over the next few years it’s likely that you’ll soon start to hear more about a next generation broadband ISP technology called Fibre to the Distribution Point<\/em> (FTTdp), which Ofcom<\/a> are currently encouraging BT<\/a> to trial. But what is FTTdp and will it really help UK homes and businesses to get ultrafast internet connections? Let’s take a look.<\/p>\n

<\/p>\n

BT<\/a> are currently rolling out two primary fibre optic based broadband technologies, Fibre-to-the-Premises<\/strong> (FTTP<\/a>\/H) and Fibre-to-the-Cabinet<\/strong> (FTTC<\/a>). In simple terms, FTTP<\/a> takes the fibre optic cable right into your home for the most stable and best possible speeds (1000Mbps+ capable), while FTTC<\/a> only takes the fibre to your local street cabinet and then uses VDSL2<\/a> over the “last mile<\/em>” run of existing copper cable into your home for speeds of up to 80Mbps.<\/p>\n

Unfortunately deploying FTTP<\/a> out to everybody would probably cost another \u00a310bn to \u00a320bn<\/strong> (estimates vary) and that’s simply not economically viable for BT<\/a>. It is however possible to get FTTP-on-Demand<\/strong> (FoD) but this forces home owners and businesses into potentially paying thousands of pounds for the installation; it’s not an affordable option.<\/p>\n

The government, short of scrapping the HS2<\/strong> project, aren’t likely to help either. But this leaves most of us stuck with FTTC<\/a> technology (except for Virgin Media<\/a>’s cable in urban areas), which is significantly slower and very distance dependent due to its reliance on copper for the “last mile<\/em>” (i.e. speeds decline the further you are away from a street cabinet).<\/p>\n

Not that FTTC is bad and indeed the service is affordable, easy to setup and currently delivers superfast broadband (30Mbps+) speeds to most of those who use it. Similarly there are a number of innovations in the pipeline, such as Vectoring<\/strong> technology (summer 2013 trial details<\/a>), that could soon help to improve its performance and push headline speeds above 100Mbps. In addition Vectoring (ITU-T G.993.5<\/em>), which works to remove interference on FTTC\/VDSL lines, is also necessary for G.Fast<\/a><\/strong> (ITU-T G.9700<\/em>) to function properly (explained below).<\/p>\n

The Future<\/span><\/strong><\/h3>\n

Never the less there’s always room for improvement and that’s one of the reasons why BT has recently started casting its eye towards G.Fast<\/a> and FTTdp<\/strong> technology, which are effectively two halves of the same coin and work best together. G.Fast<\/a> is essentially the next evolution of FTTC technology, which in theory could one day deliver symmetric speeds of up to 1Gbps (Alcatel-Lucent’s trial details<\/a>).<\/p>\n

The problem with G.Fast is that its ultra-fast speeds only work over very short distances (i.e. up to around 200+ meters from your PCP \/ street cabinet), which means that many people aren’t likely to see much benefit. The solution is to shorten this copper distance by bringing the fibre optic cable out of street cabinets and moving it closer to homes via FTTdp.<\/p>\n

A quick look at the network diagram of a commercial FTTdp product from German network developer Lantiq<\/a> helps to explain the difference (note: the speeds below may not be representative of the UK). As you can see the “distribution point<\/em>” for the fibre optic cable\u00a0is now much closer to homes, which means less copper wire to hinder the performance.<\/p>\n

\"fttdp<\/div>\n

It should be said that both G.Fast and FTTdp in particular are quite expensive. FTTdp also requires additional street works (digging up roads etc.) in order to run the fibre optic cables deeper into a community, which would dramatically shorten the last run of copper cable and deliver significantly improved speeds.<\/p>\n

Ofcoms Statement<\/strong><\/p>\n

“Installing FTTDP with the existing copper wire being used for the final few meters could be more cost effective than deploying fibre all the way to the premise. It is generally considered that FTTDP would be most effective when used with a developing technology called G.fast, which can be thought of as an evolution of VDSL<\/em>.”<\/p><\/blockquote>\n

However it is crucial to say that this sort of work doesn’t come cheap and indeed Alcatel-Lucent likens it to being a fair bit less than the cost of a full FTTP\/H deployment, albeit with some very obvious differences as previously explained.<\/p>\n

Mathew Pitt-Bailey, Alcatel-Lucent’s Director of Comms, told ISPreview.co.uk:<\/strong><\/p>\n

“In terms of cost, G.fast vectoring is going to be relatively close to that of FTTH<\/a> because, after all, you\u2019re bringing fibre NEARLY to the home so you\u2019re not going to save that much. And you require some additional equipment. But you avoid entering the home, and for some operators this is a very important factor and a very costly and time-consuming part of the roll-out.<\/em><\/p>\n

So that\u2019s where you save the money. How much depends on the particular circumstances: labour costs, how much does it cost to send an engineer to a customer, new buildings (with cable ducts and pre-fab walls) vs old buildings (with beautiful stone walls and no cable ducts) etc. So cost savings could be anywhere between 0 and 25%, with perhaps 10-15% a good average<\/em>.”<\/p><\/blockquote>\n

However it should be said that BT’s on-going rollout of FTTC, which is supported by some FTTP, has to a certain extent already done part of the ground work for FTTdp. Never the less BT would still need to spend quite a bit of money to roll-out G.Fast and FTTdp (i.e. expect them to focus on dense urban areas first as per usual).<\/p>\n

Performance Expectations<\/span><\/strong><\/h3>\n

It’s important to remember that, although FTTdp and G.Fast are often spoken of in the same breath, they are still separate standards and thus have different performance aspirates depending upon the local network capabilities. FTTdp does not need G.Fast but G.Fast would clearly work best in that sort of environment.<\/p>\n

<\/p>\n

For example, Lantiq’s FTTdp diagram above shows a performance of 250Mbps but this is largely based off a standard FTTC\/VDSL line without G.Fast. The International Telecommunications Union<\/a> (ITU) notes that the final standard would work on total copper wire lengths to the customers\u2019 transceiver of up to 250 meters.<\/strong><\/p>\n

The ITU states that aggregate data rates of up to at least 500Mbps<\/strong> should be supported on a single pair but only via loops of about 30 metres. It is expected that the bulk of the loop lengths may be in the order 30 to 50m but it’s easy to envisage operators using longer lines in some areas. Some info. hints that speeds of 150Mbps<\/strong> might thus be expected on straight loops of 250m.<\/p>\n

Meanwhile G.Fast often talks about peak speeds of 1Gbps<\/strong> (1000Mbps), which it claims would also be applicable within 250 meters of a street cabinet or fibre distribution point. Indeed one recent test of G.fast on a \u201cgood quality [copper] cable<\/em>\u201d (see the earlier Alcatel-Lucent trial link) achieved aggregate speeds of 1.1Gbps over a single pair of 70 metre lines and 800Mbps over a single pair of 100m lines.<\/p>\n

In reality there are far too many factors to consider and it’s simply too early to be talking about what G.Fast and FTTdp may or may not achieve on BT’s network in the UK. Never the less we don’t think it’s unreasonable to expect something around 200Mbps as a potential headline speed because this would be closer to what a fair proportion of users might expect.<\/p>\n

Trials and Standardisation<\/span><\/strong><\/h3>\n

The ITU currently expects its new G.Fast standard to be approved by “early 2014<\/em>” (here<\/a>) and unofficially BT already claims to have witnessed connections speeds of around 1Gbps in its closed lab tests. But long before that BT will want to focus on their deployment of FTTC Vectoring technology (assuming the trials are a success), which is a necessary precursor to G.Fast.<\/p>\n

It’s just possible that BT could then begin a national deployment of Vectoring sometime in 2014<\/strong> (don\u2019t bank on it just yet though) and thus we’d be unlikely to see G.Fast before 2015 and even then it would probably be a trial. Similarly the introduction of G.Fast may end up being dependent upon FTTdp. The UK telecoms regulator, Ofcom<\/a>, is certainly interested in BTOpenreach conducting an FTTdp trial before the G.Fast standard becomes available.<\/p>\n

Ofcoms Statement<\/strong><\/p>\n

“We understand that a number of [UK ISPs] are interested in FTTDP trials, perhaps initially using VDSL so that the physical engineering aspects can be trialled prior to the G.fast standard being available.<\/em><\/p>\n

It is likely to be a number of years before G.fast is technically mature enough for commercial deployment. As such we do not consider that it would currently be appropriate or proportionate to require BT to provide access for FTTDP unbundling. We do however, consistent with the proposed general remedies, continue to propose to require that BT provide network access on reasonable request and note that a trial or pilot of FTTDP within the period of this market review may be appropriate<\/em>.”<\/p><\/blockquote>\n

Openreach<\/a> doesn’t currently have any formal plans for a trial of FTTdp technology and a spokesperson noted to ISPreview.co.uk that Ofcom<\/a>’s statement wasn’t being taken as a “firm request for a pilot<\/em>“. The spokesperson also noted that Ofcom’s reference to its market review period would most likely mean “within the next three years<\/em>“.<\/p>\n

It’s clearly too early to be talking about dates with any certainty but, aside from Vectoring, it’s hard to envisage G.Fast and or FTTdp appearing as a commercial product before 2016\/17<\/strong>. Both would then take quite a bit of time to deploy.<\/p>\n

In conclusion, G.Fast and FTTdp do increasingly appear to represent the future direction for BT’s network. Both are capable of squeezing significantly more out of an ever shrinking run of copper cable and this in turn would stave off the need for BT to invest in a full FTTH<\/a> network, at least for now.<\/p>\n

UPDATE 24th March 2014<\/strong><\/p>\n

BT has announced that a trial of its so-called Fibre-to-the-Remote-Node<\/strong> (FTTRN) technology could soon take place in North Yorkshire<\/strong>, the description of this service is\u00a0very similar to that of FTTdp (here<\/a>).<\/p>\n","protected":false},"excerpt":{"rendered":"

Over the next few years it’s likely that you’ll soon start to hear more about a next generation broadband ISP technology called Fibre to the Distribution Point (FTTdp), which Ofcom are currently encouraging BT to trial. But what is FTTdp and will it really help UK homes and businesses to get ultrafast internet connections? Let’s […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[6],"tags":[52,55,420,56,426,417,36,69],"class_list":["post-3733","post","type-post","status-publish","format-standard","hentry","category-editorial_article","tag-fibre-optic","tag-fttc","tag-fttdp","tag-fttp","tag-fttrn","tag-g-fast","tag-ofcom-regulation","tag-bt-openreach"],"share_on_mastodon":{"url":"","error":""},"yoast_head":"\nA Look at the Future Fibre to the Distribution Point FTTdp Broadband Tech - ISPreview UK<\/title>\n<meta name=\"description\" content=\"Over the next few years it's likely that you'll soon start to hear more about a next generation broadband ISP technology called Fibre to the Distribution\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/2013\/07\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html\" \/>\n<link rel=\"next\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/2013\/07\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html\/2\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Look at the Future Fibre to the Distribution Point FTTdp Broadband Tech - ISPreview UK\" \/>\n<meta property=\"og:description\" content=\"Over the next few years it's likely that you'll soon start to hear more about a next generation broadband ISP technology called Fibre to the Distribution\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ispreview.co.uk\/index.php\/2013\/07\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html\" \/>\n<meta property=\"og:site_name\" content=\"ISPreview UK\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ispreview\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/ispreview\" \/>\n<meta property=\"article:published_time\" content=\"2013-07-22T00:42:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2014-07-31T07:52:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ispreview.co.uk\/wp-content\/uploads\/2020\/07\/ispreview_uk_logo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Mark Jackson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ispreview\" \/>\n<meta name=\"twitter:site\" content=\"@ispreview\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Jackson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2013\\\/07\\\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2013\\\/07\\\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html\"},\"author\":{\"name\":\"Mark Jackson\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#\\\/schema\\\/person\\\/de66a8b4e937c21c80e443d1bf9c35d5\"},\"headline\":\"A Look at the Future Fibre to the Distribution Point FTTdp Broadband Tech\",\"datePublished\":\"2013-07-22T00:42:33+00:00\",\"dateModified\":\"2014-07-31T07:52:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2013\\\/07\\\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html\"},\"wordCount\":1689,\"commentCount\":21,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2013\\\/07\\\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/www.ispreview.co.uk\\\/wp-content\\\/gallery\\\/2013-article-illustrations\\\/fttdp_broadband_diagram.png\",\"keywords\":[\"Fibre Optic\",\"FTTC\",\"FTTdp\",\"FTTP\",\"FTTRN\",\"G.fast\",\"Ofcom Regulation\",\"Openreach\"],\"articleSection\":[\"Editorial Article\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2013\\\/07\\\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2013\\\/07\\\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html\",\"url\":\"https:\\\/\\\/www.ispreview.co.uk\\\/index.php\\\/2013\\\/07\\\/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html\",\"name\":\"A Look at the Future Fibre to the Distribution Point FTTdp Broadband Tech - 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