Quote:
Originally Posted by Be*
Well according to Sam Knows I am 262 metres and according to Be my line is 756 metres
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you would be able to see if clear line of sight then
---------- Post added at 19:07 ---------- Previous post was at 18:59 ----------
Quote:
Originally Posted by Paul
Line distance is only one factor in the speed issue (as a SKY employee I'm sure you know this already) and things like exchange equipment, quality of line, quality of equipment on the line and congestion all play a part in ADSL speeds.
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quality of line is a big factor.
for carl j to get 20mbit on a 1.4km line is very unusual and is not the norm but of course it is possible, BTs local loop network seems to be of very inconsistent quality, what people should be aware of tho his direct route is just over half a km.
Some lines have alimiumn others have thin copper, some have poor joints, some have poor exchange equipment, some have interference all of which will reduce performance.
On my line I observed the following behaviour to give you an idea of how exchange equipment can affect synch speed.
Initially 7000kbit on 6db noise margin, fast mode noise bursts during office hours.
After lift and shift (move to diff line card port but same dslam) 6400kbit synch speed same noise bursts.
After cease and reprovide (different dslam) 6400kbit synch speed, much reduced upstream synch strength (down from over 1000kbit to 700kbit introducing lower noise margin and errors on upstream) and noise bursts now happen at weekends as well but still daytime only.
As I understand it plugging into a dslam isnt like plugging in a network cable they have to attach the naked wires and judging from my experience its entirely possible to get a poor connection. My attenuation also changed every time they moved me around in the exchange as well. Currently my upstream attenuation is lower then before with the reduced upstream performance which doesnt make sense at all.