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BT Boast of 1000Mbps G.fast and FTTdp Broadband Technology Potential
Earlier this month ISPreview.co.uk became the first to reveal some of the results from BT’s first field trial of hybrid-fibre G.fast (ITU G.9701) and FTTdp broadband technology (here) and today the operator, perhaps seizing on recent calls from UK Labour Party activists, delivered its own take describing the service as “very promising … with significant potential” for the future.
At present BT predominantly uses FTTC to deliver broadband speeds of up to 80Mbps (20Mbps upload), which works by taking a fibre optic cable to your local street cabinet and then utilising VDSL2 and your existing copper telecoms cable (i.e. between the street cabinet and home/office) to deliver the service. This can work over copper runs of up to around 2000 metres, although sub-400m is best (most homes exist within 400m).
By comparison G.fast is similar to FTTC/VDSL2, except it’s designed to deliver top speeds of up to 1000Mbps. The problem is that you can only get even close to that performance by using very short copper lines and thus in order to get the most out of G.fast the technology must be combined with another solution – Fibre to the Distribution Point (FTTdp).
In simple terms, FTTdp shortens the copper line by bringing the fibre optic cable even closer to your home than the local street cabinet, such as by installing small remote nodes (mini cabinets) on nearby telegraph poles or in other locations etc. We revealed in our exclusive report on the operators first field trial that speeds of approaching 1000Mbps were possible, as an aggregate, but only if the node is positioned practically right outside your home. Today’s press release from BT expresses this as follows; although it’s worth remembering that the trial only involved 3 houses (see our original piece for the results at 47 metres).
Full Article Here: http://www.ispreview.co.uk/index.ph...ast-fttdp-broadband-technology-potential.html
Earlier this month ISPreview.co.uk became the first to reveal some of the results from BT’s first field trial of hybrid-fibre G.fast (ITU G.9701) and FTTdp broadband technology (here) and today the operator, perhaps seizing on recent calls from UK Labour Party activists, delivered its own take describing the service as “very promising … with significant potential” for the future.
At present BT predominantly uses FTTC to deliver broadband speeds of up to 80Mbps (20Mbps upload), which works by taking a fibre optic cable to your local street cabinet and then utilising VDSL2 and your existing copper telecoms cable (i.e. between the street cabinet and home/office) to deliver the service. This can work over copper runs of up to around 2000 metres, although sub-400m is best (most homes exist within 400m).
By comparison G.fast is similar to FTTC/VDSL2, except it’s designed to deliver top speeds of up to 1000Mbps. The problem is that you can only get even close to that performance by using very short copper lines and thus in order to get the most out of G.fast the technology must be combined with another solution – Fibre to the Distribution Point (FTTdp).
In simple terms, FTTdp shortens the copper line by bringing the fibre optic cable even closer to your home than the local street cabinet, such as by installing small remote nodes (mini cabinets) on nearby telegraph poles or in other locations etc. We revealed in our exclusive report on the operators first field trial that speeds of approaching 1000Mbps were possible, as an aggregate, but only if the node is positioned practically right outside your home. Today’s press release from BT expresses this as follows; although it’s worth remembering that the trial only involved 3 houses (see our original piece for the results at 47 metres).
Full Article Here: http://www.ispreview.co.uk/index.ph...ast-fttdp-broadband-technology-potential.html
