The mechanics of "BT fibre to street cabinet"

Telecoms experts' advice sought!

If BT were persuaded to install optical fibre in order to improve broadband
speeds in an area distant from the exchange, presumably the fibre would go
directly from a connection device attached to the BT DSLAM to a termination
device in the distant street cabinet - from which in turn a link would be
made to the existing copper cables which serve individual consumers (so far
so good)?

Assuming there would be only one fibre-linked BT cabinet for each housing
area (say a village) and not one on every actual street, presumably it would
be necessary to re-route the individual copper cables serving broadband
customers so that they passed through the cabinet which houses the fibre
termination equipment (potentially quite a messy and tricky job) -or is
there some other way of doing it?

If BT carried out the optical fibre installation, would it be under any
legal obligation to let existing LLU broadband providers use the same fibre
link - or would the LLU operators have to install their own optical fibre
link if wanting to compete on speed with BT?

If (as I suspect) BT would be under no legal obligation to allow LLU
broadband ISPs to use its newly installed fibre link, is BT likely, do you
think, to allow this for a reasonable fee (permitting, for example,
TalkTalk to connect its DSLAM to the new BT fibre link)?

Or, would broadband users wanting to take advantage of the higher speed need
to change their ISPs to ones which rent services from the BT broadband
network (as opposed to using their own network beyond the local exchange)?

Any thoughts/ideas/observations would be appreciated.

--
Paul Clarke

Paul wrote:

> Telecoms experts' advice sought!
>
> If BT were persuaded to install optical fibre in order to improve
> broadband speeds in an area distant from the exchange,

Have a google for 'sub-loop unbundling'. This might be what you want.

--
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Paul wrote:
> Telecoms experts' advice sought!
>
> If BT were persuaded to install optical fibre in order to improve
> broadband speeds in an area distant from the exchange, presumably the
> fibre would go directly from a connection device attached to the BT
> DSLAM to a termination device in the distant street cabinet - from which
> in turn a link would be made to the existing copper cables which serve
> individual consumers (so far so good)?
>
No. Probably they would install a dslam in the cabinet, and run ATM down
the fibre..

> Assuming there would be only one fibre-linked BT cabinet for each
> housing area (say a village) and not one on every actual street,
> presumably it would be necessary to re-route the individual copper
> cables serving broadband customers so that they passed through the
> cabinet which houses the fibre termination equipment (potentially quite
> a messy and tricky job) -or is there some other way of doing it?
>

in a nutshell, you've got it.

> If BT carried out the optical fibre installation, would it be under any
> legal obligation to let existing LLU broadband providers use the same
> fibre link - or would the LLU operators have to install their own
> optical fibre link if wanting to compete on speed with BT?
>
Probably BT would be obligated to share. It would simply be a small
'exchange'

The interesting issue is, of course, that copper-to-phone backhaul is
needed in the cabinet as well..or some kind of VOIP


> If (as I suspect) BT would be under no legal obligation to allow LLU
> broadband ISPs to use its newly installed fibre link, is BT likely, do
> you think, to allow this for a reasonable fee (permitting, for example,
> TalkTalk to connect its DSLAM to the new BT fibre link)?
>

whether there would be roomn in e street cabinet is another matter..

> Or, would broadband users wanting to take advantage of the higher speed
> need to change their ISPs to ones which rent services from the BT
> broadband network (as opposed to using their own network beyond the
> local exchange)?
>
To be honest, its probably time the whole sodding last 5 miles was
re-nationalised.



> Any thoughts/ideas/observations would be appreciated.
>
> --
> Paul Clarke
>
>
>

On Tue, 20 Jan 2009 21:55:59 +0000, The Natural Philosopher wrote:

> To be honest, its probably time the whole sodding last 5 miles was
> re-nationalised.

Why stop at the last five miles?

--
Regards
Alex

http://www.badphorm.co.uk/

"Paul" <(E-Mail Removed)> writes:

> If (as I suspect) BT would be under no legal obligation to allow LLU
> broadband ISPs to use its newly installed fibre link, is BT likely, do
> you think, to allow this for a reasonable fee (permitting, for
> example, TalkTalk to connect its DSLAM to the new BT fibre link)?

Would it have to? Does LLU not cover *all* of the 'last mile' from the
exchange to the customer premises? In which case, the BT/TalkTalk split
would have to be in the exchange 'upstream' of the fibre and the whole'
connection', including 'logical circuit' on the fibre, the DSLAM and
copper from cabinet to the served premises, between the exchange and the
customer would be unbundled but (as now) maintained by Openreach.

Graham Murray wrote:
> "Paul" <(E-Mail Removed)> writes:
>
>> If (as I suspect) BT would be under no legal obligation to allow LLU
>> broadband ISPs to use its newly installed fibre link, is BT likely,
>> do you think, to allow this for a reasonable fee (permitting, for
>> example, TalkTalk to connect its DSLAM to the new BT fibre link)?
>
> Would it have to? Does LLU not cover *all* of the 'last mile' from the
> exchange to the customer premises? In which case, the BT/TalkTalk
> split would have to be in the exchange 'upstream' of the fibre and
> the whole' connection', including 'logical circuit' on the fibre, the
> DSLAM and copper from cabinet to the served premises, between the
> exchange and the customer would be unbundled but (as now) maintained
> by Openreach.

No, LLU covers from the exchange to the ISP. The last mile is still owned
and maintained by BT.

--

WildCardZero

Alex Potter wrote:
> On Tue, 20 Jan 2009 21:55:59 +0000, The Natural Philosopher wrote:
>
>> To be honest, its probably time the whole sodding last 5 miles was
>> re-nationalised.
>
> Why stop at the last five miles?
>
because there is scope for competition over backhaul.