Network management Toolkit 
Story: BT rolls out free broadband speed boost
Ridiculous
BT played it's final card after virgin announced the new 50 Mbit Fibre optic service, a true 8 Mbit Service is already a hard achievement let a long 20, this is not only due to noise in copper telephone lines and old wiring/equipment. it's also the distance between your home and the telephone central that makes it so hard to achieve such speeds, and even if it does you will most probably have connection issues, being disconnected every few minutes, unless of course you live in the telephone central or downgrade you connection to adsl2.
Fibre optic/wireless are the future just do a quick search on DOCSIS and you will understand why.
In some countries in Europe like my own ISP's are already offering 100 Mbit services for some time now and with this technology they can go up to 400 downstream and 100 upstream, with no loss of connectivity.
that being said bt in a last resort effort to grab it's clients BT offers this "20" Mbit service IF and only IF they renew their contracts for 1 year at least. This is definitively not fair for existing clients and most definitively not an intelligent move. If they offered unlimited downloads to all packs and this service ( despite only very few ppl will actually take advantage of it) they might have a chance of surviving the ISP war for some more years, but with actions like this i'm afraid they are pretty much dead.
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