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000024_dold@10.usenet.us.com_Thu Oct 17 14:51:32 EDT 2002.msg
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Article: 13787 of comp.protocols.kermit.misc
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From: dold@10.usenet.us.com
Newsgroups: comp.protocols.kermit.misc
Subject: Re: Problems transferring over ppp connection
Date: Thu, 17 Oct 2002 18:00:31 +0000 (UTC)
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Henry van Cleef <hvanclee@nyx.net> wrote:
> I verified that RTS and CTS are being explicitly set in the modem init
> string. Also played around with some of the pppd options. What
> seems to have had an effect is disabling software compression, and
> it's obvious that wasn't buying me anything. Netscape 4.76 has no
I had difficulty with an older UnixWare machine that couldn't quite handle
RTS/CTS properly with modem conpression turned on. I suspect that the CPU
was a little slow in lowering its side of the handshake, and that there
wasn't enough buffer. This was with internal Sportster V.90 modems.
Speed was locked at 38400 on both ends. One end would typically connect at
21600, and the other end at 33600.
I was never able to transfer largish files over PPP in one direction,
toward the Unix box. The other direction was okay. This was using Kermit-95
to ckermit 6.190, I think. I found that reducing the packet size in the
"bad" direction to less than 256 was very helpful, and I suspect that
there was a modem buffer of 256 bytes.