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From: mju@mudos.ann-arbor.mi.us (Marc Unangst)
Newsgroups: comp.dcom.modems
Subject: Re: Telebits "PEP" protocol
Message-ID: <8sHZT4w163w@mudos.ann-arbor.mi.us>
Date: 10 Dec 90 23:03:54 GMT
References: <1990Dec8.025415.2920@amd.com>
Organization: The Programmers' Pit Stop, +1 313 665 2832
Lines: 25

ncpmont@brahms.amd.com (Mark Montgomery) writes:
> mind is why isn't some modem manufacturer that already has a handle
> on V.32, V.42, bis, etc putting PEP into their products?  Seems like
> that would not only be a good marketing boost but also give some
> competition to Telebit who seems to own the Unix connectivity market.

Mostly because Telebit also owns the PEP protocol.  They invented it,
and they can decided who gets to use it.  I believe Telebit is
behaving like Microcom, who refused to license the MNP protocols above
5 to other manufacturers, preferring to have all of a small pie than a
smaller piece of a big pie.

Also, there are superior protocols.  Even though PEP holds a noisy
line very well, it is mostly half-duplex, and other protocols such as
V.32bis will beat it out for raw throughput most of the time.  PEP is
also not so good for interactive use (see HDX note above).  When PEP
was invented, it was great -- and it still is great for some
applications.  But I don't think the sales would be large enough for
another company to justify licensing the protocol from Telebit, even
if Telebit was willing.

--
Marc Unangst               |
mju@mudos.ann-arbor.mi.us  | "Bus error: passengers dumped"
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