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000227_news@newsmaster….columbia.edu _Tue Aug 26 10:38:11 1997.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc,comp.unix.questions,comp.unix.admin,comp.unix.misc,comp.unix.ultrix,comp.unix.shell
Subject: Re: Do not get connected at 33.6K
Date: 26 Aug 1997 14:38:06 GMT
Organization: Columbia University
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Message-ID: <5tupoe$gra$1@apakabar.cc.columbia.edu>
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In article <5tsn5b$o9q@newslink.runet.edu>,
I l y a <ibeloozePLEASE_REMOVE_THIS_TO_REPLY@runet.edu> wrote:
: I use Ultrix 4.4 and an old version of kermit.
:
There is no need to run an old version of Kermit. The very latest versions
work on Ultrix 4.4 and every other UNIX version:
http://www.columbia.edu/kermit/ck60.html
C-Kermit 6.0 includes much better support for high-speed modems than previous
versions.
: I just got a 33.6K
: Practical Peripherals modem but I can not get connected at that
: speed. Only 19600. This is my .kermrc file:
:
: set line /dev/tty00
: set speed 33600
: ...
:
You need a "set modem type ppi" command before your "set line" command.
This causes C-Kermit 6.0 to adjust its many of its communications settings
to the modem -- flow control, speed buffering, etc, and of course, also
allows C-Kermit to open the device even though it is not yet asserting CD.
(In Ultrix this might not be an issue, but it is in System V and POSIX
based UNIX versions).
: The error I am getting is
:
: ?No keywords match - 33600
:
: Why is this happening and what can I do about it? What is the right speed
: to specify in that file? Also, all of the modems they have are 33.6K.
:
You can only tell C-Kermit to set speeds that are supported by the underlying
operating system. 33600 is not such a speed. Use 38400 or 57600 or 76800 or
115200. Read the "Using C-Kermit" manual about speed buffering, flow control,
error correction, and compression -- the difference between modulation speed
and interface speed, and their reconciliation, is a fundamental aspect of
modern modem communications, and is covered in depth in Appendix II of the
manual:
http://www.columbia.edu/kermit/ck60manual.html
- Frank