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Re: Just a little question ..

To: Jan-Benedict Glaw <>
Subject: Re: Just a little question ..
From: Geert Uytterhoeven <>
Date: Fri, 28 Apr 2000 20:25:04 +0200 (CEST)
In-reply-to: <>
On Fri, 28 Apr 2000, Jan-Benedict Glaw wrote:
> Btw, my box has a card added which has transceivers vor glass cables. Does
> anybody know what this is (FDDI or 10MBit ethernet...)?
> Transmitter:  AMP 269011-1, 125MBit/s, @1300nm
> Receiver:     AMP 269011-1, 125MBit/s, @1300nm
> The board is connected on top of the CPU board and labeled with "SILICON
> GRAPHICS INC. ASSY NO. 030-0246-006 REV A  MADE IN U.S.A 1992". Next to
> transmitter/receiver, there's a crystal oscillator with 25MHz. That card also
> has an own "processor", a AMD Am29030, build 1991.

The 125 MBit/s looks like a 100 Mbps signal with 4-to-5 encoding. Since
100-Base FX Ethernet didn't exist in 1992 and ATM runs at 155 Mbps, I guess
it's FDDI.



Geert Uytterhoeven -- Linux/{m68k~Amiga,PPC~CHRP} --

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                                            -- Linus Torvalds

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