On 21/04/06, Toni Mueller <[EMAIL PROTECTED]> wrote:
>
> Hello,
>
> On Wed, 19.04.2006 at 12:57:16 +0100, tony sarendal <[EMAIL PROTECTED]>
> wrote:
> > On 19/04/06, Toni Mueller <[EMAIL PROTECTED]> wrote:
> > > Anyway, if someone of you comes across good E3 cards, please drop me a
> > > note. Otherwise, try to persuade your carrier to give you Ethernet.
> >
> > What about using Ethernet to T3/E3 converters instead ?
> > That way you don't need funky cards in the openbsd box.
>
> unfortunately, there appears to be no standard line encoding for E3
> lines, so if you want to have E3-Ethernet converters, you must use them
> in pairs, on both ends of the line. This rules out having eg your E3
> terminating somewhere inside an STM1/4/... trunk on the other side, but
> many carriers only offer this kind of setup. So you're almost
> guaranteed to have a non-working line if they have, say, a Cisco 12000
> on their end where your line terminates inside a trunk, and you have
> the simple fiber with only that one E3 incorporated. I've been told
> that the situation improves quite a bit when you have STM1 instead:
> There, a standard exists, but it doesn't appear to be widely tested if
> it actually works.
Very true, my mindset was limited to circuits where you run both ends
as that was what I was working on.
/Tony
--
Tony Sarendal - [EMAIL PROTECTED]
IP/Unix
-= The scorpion replied,
"I couldn't help it, it's my nature" =-
