Copper is not glass, are ISPs mass action liable for fibre optic claims?

hippey

The thing is the description can cover a multitude of sins, you might be lucky and have a cabinet outside you home so the last copper length will be very short, or it could be a couple of streets away. Or it could be right upto the premises like mine. But I have to agree with a poster earlier, back in the day you were lucky to get 512k sometimes. I think speeds will increase as the technology gets better.

spike7451

Mark_In_Hampshire wrote: »

Thanks - can I quiz you on one technical aspect?

If the fibre can be up to half a mile away, e.g. the connection to the customer's premises is copper co-ax half a mile long, or approximately 0.8km:

Over a similar distance, an ADSL2+ "Up to 24Mbps" service loses about 13% of its headline speed and would only deliver 21Mbps.

That's based on "lab figures" e.g. for a certain gauge of copper, and BT uses different gauges and indeed not all the lines are copper anyway, so it's likely to be a best case scenario.

Now I don't know how many people have telephone lines that are only 0.8km long - I'd guess it's about 1% of users or less. For those 1% of people, an ADSL2+ service could outperform a 20Mbps cable service (from the single perspective of possible max speed, leaving aside contention, shaping etc.).

But, the same cable service could supply 100Mbps over that 0.8km run of co-ax (is that true?)

Why is this? Is it simply that the co-ax is more conductive ("fatter"?) than a telephone line?

Looked at the other way around, why can't ADSL2+ perform at 100Mbps downstream over the same copper run?

The signal is amplified in the DA & then again by the Magnavox Amp in the DP Cabinet before going to the distribution tap banks.These are of different output strength's & each house is connected to a certain tap according to the distance to the home & a appropriate drop cable size is pulled to the property.The Magnavox also amplifies the distribution cable that runs on to the smaller E Cabinets.