[sclug] ADSL migration

Simon Huggins huggie at earth.li
Tue Apr 19 14:08:04 UTC 2005

On Tue, Apr 19, 2005 at 11:37:28AM +0100, Roland Turner (SCLUG) wrote:
> Simon Huggins wrote:
> > Bulldog on their own kit (i.e. an LLU'd exchange) or via BT?
> Hmm. I've missed a step somewhere. I understood that all ADSL
> provision in the UK was on BT kit. Is this no longer the case (was it
> ever)? What does LLU mean?

Local Loop Unbundling is where other operators colo kit in a BT exchange
to provide things like ADSL.

I was trying to find out online if when you LLU the ADSL actually goes
through BT kit at all or if it's split out at the physical level but
couldn't find anything quickly.  But either way it means if you run your
own network to the exchanges you can offer different products or even if
you still backhaul with BT you could be more efficient in your

e.g. I believe homechoice/free.fr who provide TV via ADSL use magical
multicast type things to reduce the amounts they send to the exchanges
and then split it out to individual customers from there.  Does anyone
know for sure?

----------(   Granny grasped her broomstick purposefully.    )----------
----------(   "Million-to-one chances," she said, "crop up   )----------
Simon ----(             nine times out of ten."              )---- Nomis
                             Htag.pl 0.0.22

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