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Announcements => News Articles => Topic started by: Bowdon on October 21, 2016, 01:50:15 PM

Title: ITU Boosts Top G.fast Copper and Coax Broadband Speeds to 2000Mbps
Post by: Bowdon on October 21, 2016, 01:50:15 PM
ITU Boosts Top G.fast Copper and Coax Broadband Speeds to 2000Mbps (http://www.ispreview.co.uk/index.php/2016/10/itu-boosts-top-g-fast-copper-coax-broadband-speeds-2000mbps.html)

Quote
The International Telecommunication Union, specifically ITU-T Study Group 15, has doubled the best speeds achievable via the new G.fast broadband standard to 2Gbps and added support for coaxial cable. Openreach (BT) are due to begin the commercial UK roll-out of this service in late 2017.

Under the current plan BTOpenreach’s G.fast (ITU G.9700/9701) technology should deliver around 300Mbps (50Mbps) over 300-350 metres of traditional copper line and they intend to make this service, which will be predominantly deployed from extension pods on the side of existing PCP street cabinets, available to 10 million UK premises by 2020 (rising to “most of the UK” by 2025).

At present the G.fast implementation being used by Openreach is based on the first official standard and as such it will harness up to 106MHz of spectrum frequency (the ‘up to’ 80Mbps capable FTTC / VDSL2 service only needs around 17MHz), which at best could deliver a top speed of 1000Mbps on a very short copper line (less than 50 metres)
Title: Re: ITU Boosts Top G.fast Copper and Coax Broadband Speeds to 2000Mbps
Post by: Bowdon on October 21, 2016, 01:56:43 PM
I noticed in the article it mentions the current version of OR G.fast will be 106MHz. The new G.fast it mentions that is getting speeds of 2000Mbps seems to be at 212MHz.

In the future once the first version of G.fast is up and running, what would be needed for OR to increase the MHz to 212? Is it just a matter of them turning a dial to allow more frequency and firmware updates, or would OR have to make physical alterations to the network?
Title: Re: ITU Boosts Top G.fast Copper and Coax Broadband Speeds to 2000Mbps
Post by: niemand on October 26, 2016, 09:39:20 PM
New line cards, new CPE and horror of horrors deeper fibre in the network as from cabinet won't cut it.
Title: Re: ITU Boosts Top G.fast Copper and Coax Broadband Speeds to 2000Mbps
Post by: j0hn on October 27, 2016, 02:59:37 AM
Indeed. The higher speeds are over very short distances. Good for large apartment blocks, Universities/schools, etc. Very heavily/densely populated buildings, rather than streets/towns. OpenReach will stick with the current G.Fast.
Title: Re: ITU Boosts Top G.fast Copper and Coax Broadband Speeds to 2000Mbps
Post by: niemand on October 29, 2016, 08:38:33 PM
Absolutely. I imagine its primary purpose will be as an overlay to existing VDSL-based FTTB solutions, or an FTTB solution in lieu of FTTP / Ethernet to the apartment in MDUs. It'll also have some value in North America where there are coaxial distribution networks in apartment blocks.

Here, pointless without pushing fibre up to DP depth, which is completely off the table for Openreach until after 2020 and unlikely after that. Far more likely to see a solution similar to their own FTTRN solution or the Swisscom FTTS solution, intercepting copper bundles somewhere in between DP and existing PCP.
Title: Re: ITU Boosts Top G.fast Copper and Coax Broadband Speeds to 2000Mbps
Post by: S.Stephenson on October 29, 2016, 09:45:04 PM
Does anyone else have the suspicion that in future the back haul for G.fast nodes might be G.fast from the cabinet?

In theory it should work fine, but is it actually cheaper?