On 08/10/2011 15:17, Wibble wrote:
> "Ghostrecon"<(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> Unexpectedly got a notification that we are being upgraded to adsl 2+
>> currently get 8Meg - about 0.6km from exchange, anybody in a similar
>> position give me an idea of adsl2+ speed if we upgrade
>>
>
> They've just changed me to adsl2+
>
> I am approx 4km from the exchange and was getting approx 3.5 meg download
> and approx .5 meg upload
>
> Now I get 3.8 meg down and just over 1 meg upload
>
>
That's probably about right.
ADSL2+ only gives a good improvement if you're already getting a good
speed, which is a bummer but true.
Check your router stats and find your downstream attenuation figure.
Then go to:
http://www.kitz.co.uk/adsl/max_speed_calc.php and input it
in the first box and click "calculate". It will then give an estimate of
your line length and what speeds you're likely to get.
I suspect that your results might well be similar to mine, as follows
Attenuation = 56.5dB
Estimated line length = 4.1Km
ADSL Max speed (current) = 3424
ADSL2+ forecast for that attenuation = 3712.
A slight improvement but not a lot!
You'll not be able to change your attenuation by much, if at all, as
this is directly related to line length.
To see how things change feed in a couple of fictitious (better)
attenuation figures and you'll see that the lower the attenuation, the
higher the speed.
For instance, an attenuation figure of 40dB would give a "before" figure
of 6976 and after at 9024.
A 30dB attenuation would result in a "before" speed of 7904 and
afterwards at 15264.
George