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To: Stefan Esser <se@freebsd.org>
cc: Pedro Giffuni <pfg@FreeBSD.org>, Warner Losh <imp@bsdimp.com>,
 Brooks Davis <brooks@freebsd.org>, svn-src-head@freebsd.org,
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Subject: Re: svn commit: r327086 - head/sys/dev/lmc
In-reply-to: <3f4a7247-e711-c65a-d973-c929ac8726db@freebsd.org>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
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--------
In message <3f4a7247-e711-c65a-d973-c929ac8726db@freebsd.org>, Stefan Esse=
r writes:
>Am 04.01.18 um 00:41 schrieb Pedro Giffuni:

>It appears to be a strange beast that uses the Ethernet chip to generate =
a
>bit stream which is then converted to HDLC. Not sure whether these were u=
sed
>for Frame Relay or to connect to the British X.25 JANET, a few decades ag=
o.
>Perhaps also to connect to SS7 signaling networks?

They were actually pretty versatile, we used them both for "blank"
E1 and Nx64 scenarios, and I know they were used for Frame Relay
several places in US.

I don't think they could do SS7 or ISDN like the MUSYCC chip could.

But nobody uses T1/E1/T3/E3 lines any more for anything...

-- =

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    =

Never attribute to malice what can adequately be explained by incompetence=
.