On Fri, 11 Feb 2005 21:21:39 +0000, Ian Stirling wrote:
> Jonathan Buzzard <(E-Mail Removed)> wrote:
>> On Thu, 10 Feb 2005 22:26:01 +0000, Ian Stirling wrote:
>>
>>> Decal <(E-Mail Removed)> wrote:
>>>> will it ever change? In view of all these upgrades?
>>>>
>>>
>>> Probably not in the near term.
>>> It'll need new technology.
>>
>> Nope it will require pushing the DSLAM's out the exchanges and into
>> roadside green boxes. This is probably the most sensible way in the
>> longer term to reach those customers at distance from the exchange.
>> It is also the best way to provide very high speed broadband (i.e.
>> something like VDSL) to more than a select few. A single optical fiber
>> could easily support 20 users at 50Mbps.
>>
>> It will need new products, but not new technology.
>
> I was meaning new technology in the "BT'd need to put in new kit".
An interesting new meaning to the term "new technology"
> Using the existing wiring to the green boxes as a backhaul would be an
> obvious option.
Won't work, you need new wiring for the backhaul. Admittedly it is
probably cheaper to pull a single fibre optical bundle to a green box than
a pile of copper.
The idea is not new, and it is basically what TPON is, but this just deals
with your basic POTS and more recently ISDN. What is needed is DSLAM's
that can be feed from a spare TPON fibre that will go in a roadside green
box.
If I was head of strategic planning at BT, this would be my primary goal.
It provides the long term future upgrade path from ADSL, and in the
shorter term provides a method of providing broadband to those to far
from the exchange today.
Better still your first customers will most like put while the bugs are
worked out. It is either this or nothing
> ADSL (with varying up and down bandwidths) on all the incoming wires, would
> obviously provide far greater bandwidth to the end users than
> using each wire seperately back to the exchange.
> Add VOIP-DACS type boxes, and you eliminate much of the digging for new lines.
I suspect as a large numbers of second "internet" phone lines disappear
with the ever increasing uptake of broadband there will be plenty of spare
lines, vastly reducing the need to dig holes for new ones.
JAB.
--
Jonathan A. Buzzard Email: jonathan (at) buzzard.me.uk
Northumberland, United Kingdom. Tel: +44 1661-832195