Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!munnari.oz.au!mel.dit.csiro.au!yarra!bacchus!david
From: david@bacchus.esa.oz.au (David Burren [Athos])
Newsgroups: comp.mail.uucp
Subject: Re: UUCP Over 7-bit connection
Message-ID: <2135@bacchus.esa.oz.au>
Date: 25 Mar 91 06:15:39 GMT
References: <91070.203832LDSHANER@MTUS5.BITNET> <1991Mar17.224601.27427@scuzzy.in-berlin.de> <1991Mar22.001432.1420@eci386.uucp>
Organization: Expert Solutions Australia
Lines: 38

In <1991Mar22.001432.1420@eci386.uucp> woods@eci386.uucp (Greg A. Woods) writes:

>In article <1991Mar17.224601.27427@scuzzy.in-berlin.de> src@scuzzy.in-berlin.de (Heiko Blume) writes:
>> you must use f protocol to do this. in fact i receive a full news
>> feed with it. of course news (and other 8bit data) should be 7 bit
>> encoded before transmission.

>The last time I looked at the UUCP 'f' protocol code (which was just
>seconds ago), it explicitly quotes the 8'th bit using the following
>conversions:
>/* Byte conversion:
> *
> *   from        pre       to
> * 000-037       172     100-137
> * 040-171               040-171
> * 172-177       173     072-077
> * 200-237       174     100-137
> * 240-371       175     040-171
> * 372-377       176     072-077
> */

>I.e. 'f' actually lets you transmit 8-bit data through a 7-bit only
>link with UUCP.  I.e. 'f' is 8-bit transparent.

Ah yes, but sending 8-bit data over it will blow up the transmissions by
causing multiple characters to be sent.  If you get your news batcher to
compress to 7-bit data then the only characters that need to be quoted are
those from 000-037 and 172-177.

I would have thought this would give you much better throughput on the line.

Didn't someone (in Germany?) do a 'k' protocol in their PC UUCP that sent
data over 7-bit links?
_____________________________________________________________________________
David Burren [Athos]                          Email: david@bacchus.esa.oz.au
Software Development Engineer                 Phone: +61 3 819 4554
Expert Solutions Australia, Hawthorn, VIC     Fax:   +61 3 819 5580
			[speaking for myself of course]