Shortly after our exchange became enabled several
people noticed a decrease in speeds. At first we thought it
may have been a temporary glitch, but things got worse and worse
Up until this time contention at the local exchange was a relatively
unheard factor, and we didn't know quite what to do, and there were
in excess of 30 users from the Broadband4Blackpool
site forums now complaining.
Any how to cut a very long story short, eventually we got someone
at BTw to listen..
Over a period of weeks I was in
daily contact with BT Special Faults Dept (SFI). I collated a lot
of data and information and also ran tests from here which helped
SFI to identify the problem.
During this time I had to learn about contention fast.. I did a fair
bit of research and asked a lot of questions from BTw... some of the
answers I got were not previously known to the general public. I
have also visited our local exchange.
I believe our exchange was the first exchange on which BT publicly
admitted there were contention issues.
Thankfully now our problems have been resolved and since then I have
made many posts on ADSL guide about contention and how it works.
I am far from an expert on contention... and a lot of facts about
ADSL and contention and how it works are still unknown to the general
public. There isn't a lot of information out there... and
much of it is based on logical assumptions. However, I have no reason
to doubt that the information I have received is incorrect. Although
this information stood true in May 2003, it should be bourne in mind
that exchanges and equipment are updated and things may not be the