Date: Sat, 21 Mar 1998 11:48:04 GMT From: brian@Awfulhak.org (Brian Somers) Cc: freebsd-questions@FreeBSD.ORG, tech@OpenBSD.org, cherylp@stac.com Subject: Re: Specs for PPP "1sr choice compression" Message-ID: <199803211148.LAA09163@shift.lan.awfulhak.org> References: <3506DFCB.F6D5FA0E@on-line.de> <864t1326d9.fsf@helios.ironbridgenetworks.com> <fovae6.012.ln@shift.lan.awfulhak.org> <86d8fmzn4l.fsf@helios.ironbridgenetworks.com> <anlle6.7c6.ln@shift.lan.awfulhak.org>
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Just to allow everyone the opportunity to say "told you so", I
contacted the people from the rfc (2118) about MPPC and they
essentially said that despite the rfc describing MPPC encoding,
writing an implementation of the rfc and distributing it as free
software is in violation of the copyright.
I'm unwilling to write an implementation that I can't distribute
in source form, so.... no support :-(
In article <anlle6.7c6.ln@shift.lan.awfulhak.org>,
brian@shift.lan.awfulhak.org (Brian Somers) writes:
: In article <86d8fmzn4l.fsf@helios.ironbridgenetworks.com>,
: James Carlson <carlson@ironbridgenetworks.com> writes:
>: : brian@shift.lan.awfulhak.org (Brian Somers) writes:
>: >> Does anyone know where I might get my hands on specs for STAC or
>: >> MS-PCC ? Stac Electronics themselves don't seem that forthcoming :-(
>: :
>: : Both are patented and proprietary to STAC Electronics. I wouldn't
>: : want to be messing around with that sort of thing.
>: :
>: : For the standard STAC algorithm, they do have a C implementation which
>: : is distributable in binary if used only for CCP in PPP and if you
>: : execute a $0 license. You can get the source to v3.1 from STAC. You
>: : can't distribute the source, though you might make it "easy" for users
>: : to grab the STAC code and integrate into yours when they install.
>: :
>: : There are several good, free CCP algorithms. It's a shame that only
>: : patented algorithms are in common use.
:
: Interestingly enough, the MPPC rfc is detailed enough to
: implement (which is more than I can say for the STAC one - hardly
: an rfc), and the copyright (AFAICT) only restricts its use to
: ppp implementations that wish to talk to other ppp
: implementations :-)
:
: I sent some email to the address in the rfc last night to see if
: it's ok for me to re-implement it and distribute it under the BSD
: license. If they say ok, I plan to add it to user-ppp under FreeBSD
: & OpenBSD.
--
Brian <brian@Awfulhak.org> <brian@FreeBSD.org> <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour !
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