Mailinglist Archive: opensuse (1517 mails)

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Re: [opensuse] Moving to IPv6
  • From: Per Jessen <per@xxxxxxxxxxxx>
  • Date: Tue, 14 Sep 2010 15:20:56 +0200
  • Message-id: <i6nsro$2a0$1@xxxxxxxxxxxxxxxx>
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)

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