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FTTdp + G.Fast - 1 Gb/s over telephone line ?

  • 06-12-2013 2:02pm
    #1
    bk
    Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 22,876 Mod ✭✭✭✭


    In a previous thread, I talked about future UPC technology and 1Gb/s speeds from them. Now lets talk about future upcoming standards that might let Eircom deliver 1Gb/s.

    FTTdp + G.Fast might allow Eircom to deliver 1Gb/s to peoples homes over the existing telephone cable!!

    FTTdp stands for Fibre To The Distribution Point, the dp is the last point before the telephone cable runs to your home. It is usually a telephone pole or duct and usually only serves 10's of homes and usually under 100m distance.

    This would involve Eircom running fibre from each VDSL cab to each pole or duct to the last distribution point and then putting a piece of equipment that converts the fibre to the copper telephone line.

    If you mix FTTdp with VDSL2 you get speeds of 250mb/s at 100meters. If you use G.Fast instead, an upcoming standard, then you can get speeds of 1Gb/s at up to 100 meters.

    This technology has some interesting advantages:

    - No need to run fibre right into peoples homes, thus no expensive digging up of gardens, walls, etc. all that messy stuff.

    - No engineer install is required at the customers house, the customer can just switch the modem themselves.

    - The piece of equipment on the pole is actually powered by the customers own modem, it sends power back over the phone line to power the device on the pole. This reduces cost and complexity for Eircom of getting power to the poles.

    This all sounds great, but there is a downside.

    According to the developers of the technology, it won't be much cheaper then FTTH. Depending on the install, it might be 0% to 25% cheaper then FTTH.

    So personally I would think it would be better for telcos to just bite the bullet and go to FTTH and thus benefit from it's long term upgrade potential, rather then continue to put it off.

    Still an interesting technology. More reading and an interesting video demo of an install here:

    http://www.ispreview.co.uk/index.php/2013/07/a-look-at-future-fibre-to-the-distribution-point-broadband-isp-tech.html
    http://www.youtube.com/watch?v=LyFvM5BIMGs


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