{"id":14617,"date":"2017-09-15T10:07:12","date_gmt":"2017-09-15T09:07:12","guid":{"rendered":"https:\/\/www.ispreview.co.uk\/?p=14617"},"modified":"2017-09-18T07:35:54","modified_gmt":"2017-09-18T06:35:54","slug":"bt-sets-specific-technical-requirements-g-fast-broadband-modems","status":"publish","type":"post","link":"https:\/\/www.ispreview.co.uk\/index.php\/2017\/09\/bt-sets-specific-technical-requirements-g-fast-broadband-modems.html","title":{"rendered":"BT Posts Specific Technical Requirements for G.fast Broadband Modems"},"content":{"rendered":"

Telecoms operator BT<\/a> has updated their technical document (SIN520<\/a>) for the new 330Mbps G.fast<\/a> hybrid fibre broadband technology to include the specific technical requirements for end-user modems, which is what Openreach<\/a> and ISPs will supply to homes and businesses.<\/p>\n

Initially most people who order a G.fast<\/a> service can expect to receive a Managed Install, which will most likely include the installation of a new NTE5C<\/strong> Master Socket (unless you’ve already got one) and the Huawei MT992<\/strong> broadband modem (pictured below). However the operator will also offer a self certification option for ISPs to use to test their own G.fast<\/a> modem\/routers against.<\/p>\n

Openreach<\/a>’s G.fast pilot is currently being rolled out to cover 1 million UK homes and businesses by the end of 2017 and it will then aim to reach 10 million premises by 2020 (here<\/a>).<\/p>\n

\"Openreach<\/p>\n

The following table shows which technical requirements can be verified by ISPs and which would be verified by BT<\/a>, although this is only of any real interest to ISPs and those with an interest in the technical side of how such things work. Further details can be found under Section 3 of the aforementioned document.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Requirement\u00a0<\/strong><\/td>\nDescription\u00a0<\/strong><\/td>\nVerification by\u00a0<\/strong><\/td>\n<\/tr>\n
R.PHY.1<\/td>\nPhysical Connector<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.1<\/td>\nBBF G.fast Certficiation<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.2<\/td>\nCompliance with mandatory sections of G.9700 and G.9701<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.3<\/td>\nSupport of Profile 106a and 106b<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.4<\/td>\nCompliance with Part F of the UK ANFP<\/td>\nBT<\/a><\/td>\n<\/tr>\n
R.FAST.5<\/td>\nSupport of AA43C handshake tones (i.e. A43 and A43 only)<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.6<\/td>\nCompatibility with 17MHz VDSL2<\/a><\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.7<\/td>\nAggregate 1Gbps capacity (2 to 106MHz)<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.8<\/td>\nSupport of upstream and downstream retransmission<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.9<\/td>\nSupport of upstream and downstream vectoring<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.10<\/td>\nSupport of seamless rate adapation (SRA) in both upstream and downstream directions<\/td>\nBT\/CP<\/td>\n<\/tr>\n
R.FAST.11<\/td>\nSupport of fast rate adapation (FRA) in both upstream and downstream directions<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.12<\/td>\nCPE noise floor \u2264 -150dBm\/Hz<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.13<\/td>\nSupport of 8dBm aggregate downstream transmit power<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.14<\/td>\nSupport of 8dBm aggregate upstream transmit power<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.15<\/td>\nCapable of transmitting at PSDs of up to -65dBm\/Hz at frequencies up to 30MHz.<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.16<\/td>\nSupport of TDD frame lengths of 36 symbol periods<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.17<\/td>\nCorrect reporting of Hlog<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.18<\/td>\nCorrect reporting of QLN<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.19<\/td>\nCorrect reporting of ALN<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.20<\/td>\nSupport of low power modes<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.21<\/td>\nCorrect inventory reporting<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.22<\/td>\nSupport of up to 14bits\/tone in both upstream and downstream directions<\/td>\nCP<\/td>\n<\/tr>\n
R.FAST.23<\/td>\nCorrect reporting of performance data<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.24<\/td>\nSupport of RFI and ARI notching<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.25<\/td>\nSupport of upstream power back-off (UPBO)<\/td>\nBT<\/td>\n<\/tr>\n
R.FAST.26<\/td>\nCorrect reporting of vendor information<\/td>\nBT<\/td>\n<\/tr>\n
R.ETH.1<\/td>\nSupport of an Ethernet frame size of between 68 and 1534 bytes.<\/td>\nCP<\/td>\n<\/tr>\n
R.WAN.1<\/td>\nSupport of IEEE 802.1q VLAN encapsulation<\/td>\nCP<\/td>\n<\/tr>\n
R.WAN.2<\/td>\nSupport of encapsulation within an IEEE 802.1q VLAN (C-VLAN)<\/td>\nCP<\/td>\n<\/tr>\n
R.WAN.3<\/td>\nSupport of Multicast and Unicast over the same single-tagged VLAN.<\/td>\nCP<\/td>\n<\/tr>\n
R.WAN.4<\/td>\nEthertype (Tag Protocol Identifier) field of the Ethernet frame set to 0x8100<\/td>\nCP<\/td>\n<\/tr>\n
R.WAN.5<\/td>\nCVLAN Canonical Format Indicator set to zero<\/td>\nCP<\/td>\n<\/tr>\n
R.WAN.6<\/td>\nVLAN ID set to 101 for when GEA Data and Multicast are used<\/td>\nCP<\/td>\n<\/tr>\n
R.WAN.7<\/td>\nIGMP reports encoded as IGMPv3 or IGMPv2 over CVLAN ID 101<\/td>\nBT<\/td>\n<\/tr>\n
R.WAN.8<\/td>\nMulticast for GEA frames not encapsulated with PPP<\/td>\nBT<\/td>\n<\/tr>\n
R.OAM.1<\/td>\nSupport of \u201cdying gasp\u201d<\/td>\nBT<\/td>\n<\/tr>\n
R.OAM.2<\/td>\nSupport of EFM OAM as per IEEE 802.3 Clause 57<\/td>\nCP<\/td>\n<\/tr>\n
R.OAM.3<\/td>\nEFM OAM statistics collection<\/td>\nBT<\/td>\n<\/tr>\n
R.OAM.4<\/td>\nEFM OAM loopback<\/td>\nBT<\/td>\n<\/tr>\n
R.OAM.5<\/td>\nRX and TX statistics collection point<\/td>\nCP<\/td>\n<\/tr>\n
R.OAM.6<\/td>\nEFM OAM statistics collection response<\/td>\nBT<\/td>\n<\/tr>\n
R.OAM.7<\/td>\nEFM OAM enabled on CPE G.fast ports<\/td>\nCP<\/td>\n<\/tr>\n
R.FILTER.1 \/ R.FILTER.2<\/td>\nCompliance to ETSI TS 101 952 Part 1 (extended to 212MHz) or Part 3 (extended to 212MHz)<\/td>\nCP<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Providers will as usual be able to submit their devices to Openreach<\/a> for a “much shorter<\/em>” (we hope) G.fast Modem Conformance test, after sharing the results of their self certification testing with Openreach for verification.<\/p>\n","protected":false},"excerpt":{"rendered":"

Telecoms operator BT has updated their technical document (SIN520) for the new 330Mbps G.fast hybrid fibre broadband technology to include the specific technical requirements for end-user modems, which is what Openreach and ISPs will supply to homes and businesses.<\/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":[474,417,69],"class_list":["post-14617","post","type-post","status-publish","format-standard","hentry","category-uk_isp_news","tag-bt","tag-g-fast","tag-bt-openreach"],"share_on_mastodon":{"url":"","error":""},"yoast_head":"\nBT Posts Specific Technical Requirements for G.fast Broadband Modems - ISPreview UK<\/title>\n<meta name=\"description\" content=\"Telecoms operator BT has updated their technical document (SIN520) for the new 330Mbps G.fast hybrid fibre broadband technology to include the specific\" \/>\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\/2017\/09\/bt-sets-specific-technical-requirements-g-fast-broadband-modems.html\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BT Posts Specific Technical Requirements for G.fast Broadband Modems - 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