Ilya Chernykh wrote:
On Tuesday 14 September 2010 16:37:09 James Knott wrote:
Loading coils were used to make phone links work better over longer cable runs, by equalizing frequency response in the voice bandwidth. However, those coils also kill ADSL.
Yes, and also in this country most of telephone wiring historically was made not with twisted pair but with cables with parallel conductors (like this: http://img137.imageshack.us/img137/6526/resizeoftrp.jpg )
Yep, that's also the case in western Europa. AFAIK, nobody uses twisted pair for analog telephone wiring. For ISDN, it is often used on the S0 bus, but that's more for convenience.
ADSL over telephone line is not better in any way than other exotic solutions on the market like ADSL over mains power outlets.
No, it's only a matter of providing the access and the bandwidth in the most economical fashion.
Some ADSL providers advertise ADSL solutions based on new lines, which is nothing more expensive for the user than using existing telephone lines (i.e. the connection in both cases is free, and of course there is no evident advantage over Ethernet as in both cases new wiring is required).
The old 2-wire telephone is both thinner and cheaper than Cat5. -- Per Jessen, Zürich (17.9°C) -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org