{"id":9114,"date":"2015-04-20T19:36:00","date_gmt":"2015-04-20T18:36:00","guid":{"rendered":"http:\/\/www.ispreview.co.uk\/?p=9114"},"modified":"2015-04-21T15:42:23","modified_gmt":"2015-04-21T14:42:23","slug":"bt-confirms-third-500mbps-uk-g-fast-broadband-pilot-for-swansea","status":"publish","type":"post","link":"https:\/\/www.ispreview.co.uk\/index.php\/2015\/04\/bt-confirms-third-500mbps-uk-g-fast-broadband-pilot-for-swansea.html","title":{"rendered":"UPDATE2 BT Confirm Third 500Mb UK G.fast Broadband Pilot Set for Swansea"},"content":{"rendered":"<p>Earlier this year <a class=\"shortlink shortlink-145\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/britishtelecom\" target=\"_blank\" rel=\"nofollow\" title=\"BT\">BT<\/a> announced a decade long deployment plan for their next generation <a class=\"shortlink shortlink-112 shortlink-chref\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/gfast\" target=\"_blank\" rel=\"\" title=\"g.fast\" data-chref=\"https:\/\/www.ispreview.co.uk\/broadband_cable.php\">G.fast<\/a> (ITU G.9701) broadband technology (<a href=\"http:\/\/www.ispreview.co.uk\/index.php\/2015\/01\/bt-confirm-uk-rollout-1000mbps-g-fast-ultrafast-broadband-2020.html\" target=\"_blank\">details<\/a>), which will begin in 2016\/17 and should eventually make download speeds of &#8216;up to&#8217; 500Mbps available to &#8220;<em>most homes<\/em>&#8221; across the United Kingdom.<\/p>\n<p><!--more--><\/p>\n<p>As a quick recap, <a class=\"shortlink shortlink-112 shortlink-chref\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/gfast\" target=\"_blank\" rel=\"\" title=\"g.fast\" data-chref=\"https:\/\/www.ispreview.co.uk\/broadband_cable.php\">G.fast<\/a> works in a loosely similar way to the operators current &#8216;up to&#8217; 80Mbps <strong>Fibre-to-the-Cabinet<\/strong> (FTTC) technology, except that it requires significantly more radio spectrum (FTTC = <strong>17MHz<\/strong> vs G.fast <strong>106MHz+<\/strong>) and must thus operate over a much shorter run of copper cable (ideally less than 200 metres).<\/p>\n<p>Due to this the high capacity fibre optic line has to be taken even closer to homes, usually as far as a smaller remote node or distribution point (FTTdp \/ FTTrN) that can be built on top of a telegraph pole, inside a street cabinet or possibly even put underground.<\/p>\n<p>In an ideal setup it\u2019s predicted that a home with a G.fast node right outside, and no existing VDSL2 (FTTC) services to gobble part of the shared spectrum, might be able to achieve top speeds of approaching <strong>1000Mbps<\/strong>; although <a class=\"shortlink shortlink-145\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/go\/britishtelecom\" target=\"_blank\" rel=\"nofollow\" title=\"BT\">BT<\/a> has wisely avoided promising such performance (even if they could deliver it, the capacity demands might be a problem).<\/p>\n<p><img decoding=\"async\" class=\"ngg-singlepic ngg-none aligncenter\" src=\"http:\/\/www.ispreview.co.uk\/wp-content\/gallery\/bt-openreach-uk-illustrations\/gfast_broadband_bt_network_diagram.gif\" alt=\"g.fast broadband bt network diagram\" \/><\/p>\n<p>BT had originally announced that its commercial roll-out would be proceeded by two Summer 2015 pilots, one in <strong>Huntingdon<\/strong> (Cambridgeshire) and another in <strong>Gosforth<\/strong> (Newcastle). Each of these would involve around <strong>2,000 premises<\/strong> (total of 4,000).<\/p>\n<p>However today also saw BT&#8217;s Chief Network Architect, <strong>Neil McRae<\/strong>, give a speech at the <a href=\"http:\/\/www.uknof.org.uk\/\" target=\"_blank\">UK Network Operators Forum<\/a> (UKNOF) in Manchester, where he released a few slivers of new information to the public.<\/p>\n<p>The speech included the above diagram and a few details about another &#8220;<em>Early Technical Trial<\/em>&#8221; that the operator had conducted (see below for a useful overview of BT&#8217;s deployment strategy), which suggested that initially you&#8217;ll probably have to live within around <strong>50 metres<\/strong> of a G.fast distribution point in order to receive 500Mbps. All of this in roughly in keeping with what we already know from BT&#8217;s even earlier prototype trial (details <a href=\"http:\/\/www.ispreview.co.uk\/index.php\/2014\/09\/first-bt-trial-future-g-fast-copper-broadband-hits-nearly-720mbps.html\" target=\"_blank\">here<\/a> and <a href=\"http:\/\/www.ispreview.co.uk\/index.php\/2014\/09\/bt-boast-1000mbps-g-fast-fttdp-broadband-technology-potential.html\" target=\"_blank\">here<\/a>).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"ngg-singlepic ngg-none aligncenter\" src=\"http:\/\/www.ispreview.co.uk\/wp-content\/gallery\/bt-openreach-uk-illustrations\/gfast_broadband_bt_early_trial.jpg\" alt=\"gfast broadband bt early trial\" width=\"670\" height=\"517\" \/><\/p>\n<p>But the most interesting bit of information to come out of Neil&#8217;s speech was that the operator now plans for a third trial to take place during the summer, which will be conducted somewhere in the city of <strong>Swansea<\/strong> (Wales). <del>The suggestion is that this too would involve 2,000 premises<\/del>.<\/p>\n<p>BT also suggested that the stated speed of 500Mbps might not be what the operator actually offers at launch. Mr McRae said, &#8220;<em>[G.fast] will initially provide hundreds of megabits, rising up to 500Mbps within ten years. &#8230; We are aggressively pursuing further industry standards to improve the rate vs reach of G.fast and enable new kit to be developed.<\/em>&#8221; The trials will likely\u00a0mirror <a class=\"shortlink shortlink-46 shortlink-chref\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/openreach\" target=\"_blank\" rel=\"\" title=\"openreach\" data-chref=\"https:\/\/www.openreach.co.uk\">Openreach<\/a>&#8217;s current top <a class=\"shortlink shortlink-110 shortlink-chref\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/fttp\" target=\"_blank\" rel=\"\" title=\"fttp\" data-chref=\"https:\/\/www.ispreview.co.uk\/broadband_fibre_optic.php\">FTTP<\/a> speed of around 300Mbps, although this\u00a0may not\u00a0reflect the commercial launch product.<\/p>\n<p>At this stage it&#8217;s still too early to say precisely what approach BT will take to G.fast deployment, such as with regards to the target distribution point distance (note: most of their early trials seem to set an upper limit of around 100 metres) and how they&#8217;ll manage G.fast&#8217;s coexistence with VDSL2 \/ FTTC services in the same area because the two share some of the same spectrum.<\/p>\n<p>One tricky solution would be to automatically upgrade lines to G.fast as it goes live, as opposed to tolerating a lower speed with FTTC coexistence (initially we suspect they\u2019ll allow the two to work side-by-side and accept a loss of top G.fast performance). Another problem is that some <strong>Sub-Loop Unbundled<\/strong> (SLU) ISPs with their own FTTC deployments are unlikely to benefit due to incompatible G.fast hardware, although we doubt BT\u00a0will lose sleep over that.<\/p>\n<p>We hope to have more details on the summer trials in a few months. The trials will represent the first time that BT has taken G.fast out of a more controlled environment and deployed it using commercial grade hardware. As such we&#8217;re keen to see how it performs once subjected to the mucky real-world.<\/p>\n<p><strong>UPDATE 21st April 2015<\/strong><\/p>\n<p>BT informs that the <strong>Swansea<\/strong> trial is not, contrary to the slides, the same size (2,000 residential premises) as the other two areas because it will be a technical rather than residential trial. The operator has also furnished us with a statement.<\/p>\n<blockquote class=\"bq1\"><p><strong>A BTOpenreach spokesperson told ISPreview.co.uk:<\/strong><\/p>\n<p>&#8220;<em>We are looking at the possibility of conducting a technically-focused G.fast trial in Swansea, drawing on our expertise and experience in South Wales, rather than a large-scale residential trial. We will reveal more details in due course<\/em>.&#8221;<\/p><\/blockquote>\n<p><strong>UPDATE 21st April 2015 &#8211; 3:32pm<\/strong><\/p>\n<p>Sadly it looks as if the Powerpoint slides have been taken offline, so we&#8217;ll paste in some of its other details from our copy below for future reference. Firstly, BT said that they have identified 5 key developments required to deliver their ambition for future copper broadband services (G.fast):<\/p>\n<blockquote><p><em>* Enable higher bits per tone<\/em><br \/>\n<em> * Improve the receiver sensitivity (Noise floor)<\/em><br \/>\n<em> * Increase the transmit power<\/em><br \/>\n<em> * Optimise the frequency usage with VDSL<\/em><br \/>\n<em> * Increased vectoring group sizes<\/em><\/p><\/blockquote>\n<p>The slides also included mention of how the above trials would also involve some testing of new fibre optic deployment methods and a revised approach to Fibre on Demand (FoD \/ <a class=\"shortlink shortlink-110 shortlink-chref\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/link\/fttp\" target=\"_blank\" rel=\"\" title=\"fttp\" data-chref=\"https:\/\/www.ispreview.co.uk\/broadband_fibre_optic.php\">FTTP<\/a> on Demand). Apparently a pilot is already live in <strong>Thornton Heath<\/strong> (London) with &#8220;positive feedback&#8221;.<\/p>\n<blockquote><p><strong>Using easier to deploy cable<\/strong><br \/>\n<em>* Push\/Pull instead of [blown fibre]. SST versus tube<\/em><br \/>\n<em> * Fast Access Cable &#8211; Peels like a banana<\/em><br \/>\n<em> * Less issues at customer site with splicing and presentation.<\/em><br \/>\n<em> * Testing easier<\/em><\/p><\/blockquote>\n<p>As one of our readers (MikeW) appears to have correctly pointed out, the Push\/Pull approach most likely refers to fibre being blown with a leading piston\/missile that adds the &#8220;pull&#8221; element, alongside a standard &#8220;push&#8221; given by a fibre-blowing machine.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Earlier this year BT announced a decade long deployment plan for their next generation G.fast (ITU G.9701) broadband technology (details), which will begin in 2016\/17 and should eventually make download speeds of &#8216;up to&#8217; 500Mbps available to &#8220;most homes&#8221; across the United Kingdom.<\/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":[1],"tags":[474,420,426,417,69,71],"class_list":["post-9114","post","type-post","status-publish","format-standard","hentry","category-uk_isp_news","tag-bt","tag-fttdp","tag-fttrn","tag-g-fast","tag-bt-openreach","tag-wales"],"share_on_mastodon":{"url":"","error":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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