After about a week of trying to get this to work, I finally managed to
find out what was going wrong. The problem was actually a bug in early
versions of the firmware on Multitech 28.8 modems. Specifically, there
was a problem with LAPM and/or V.42bis implementation. If you disable
them and replace LAPM with MNP error correction (AT#L1) the problem goes
away.
Neither Multitech or Dell (who sold the modem with one of their boxes)
were aware of the problem. It is *definitely* not a Livingston problem
as it has been reported with the USR TC boxes too.
Thanks to all that replied. Sorry to waste your time.
On Thu, 14 Aug 1997, Jake Messinger wrote:
> On Thu, 14 Aug 1997, Richard Morrell wrote:
>
> > One of my customers is having problems with his Multitech 28.8k internal
> > modem (MT2834ZXPI which was supplied with a Dell PC since you asked). It
> > connects fine at 28800, but when I start downloading large files it chokes
> > completely. By this I mean that it slows from 4KBps to about 0.6KBps and
>
> Sounds like flow control.
Richard Morrell
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